CN103932807B - Obtain tooth target and rescue the method for state, dental appliance manufacture method and dental appliance - Google Patents

Abstract

The invention provides a kind of for obtaining the method that tooth target rescues state, comprise the following steps: a) obtain the current dental phenomenon of patient or tooth and the state of perienchyma thereof, thus generate the underlying virtual model of tooth or tooth and perienchyma thereof；B) reference curve is determined based on described underlying virtual model；C) at least one is provided to rescue parameter；And d) according to described at least one rescue parameter and described reference curve generates the first dummy model, described first dummy model include first group rescue step Tooth rescue state, wherein said first group rescue step include first to N step rescue step, wherein N >=1.Present invention also offers a kind of target determined based on said method and rescue the method for state manufacture dental appliance and based on the dental appliance manufactured by said method.

Description

Obtain tooth target and rescue the method for state, dental appliance manufacture method and tooth Tooth appliance

Technical field

Present invention relates in general to clinical oral correction field, in particular it relates to one is used for obtaining tooth Target rescues the method for state.Moreover, it relates to it is a kind of for rescuing state manufacture orthodontic based on tooth target The method of device and according to the dental appliance manufactured by described method.

Background technology

Malocclusion is one of big disease in oral cavity three, has the highest prevalence.Traditional malocclusion correcting method is adopted more With the fixing bracket appliance being bonded on tooth, its shortcoming is chain mark, affects attractive in appearance；Simultaneously as appliance is long-term Be bonded on tooth, whole rescue during can not take off, oral hygiene hardly results in be safeguarded well, easily grows bacterial plaque and leads Cause tooth demineralization, variable color；And doctor periodically manually must constantly regulate appliance during rescuing, process of rescuing is complicated, time Between long, and the effect rescued is largely dependent upon the technical merit of doctor.Rescue relative to traditional fixing bracket For technology, novel invisalign technology need not bracket and steel wire, but uses a series of invisible orthotic device.This stealth Appliance is made up of the elastic transparent polymer material of safety, make process of rescuing almost other people without completing in discovering, Bu Huiying Ring daily life and social activity；Wearing owing to patient can pluck voluntarily, oral hygiene can be with conventional maintenance；Simultaneously as without viscous Knot bracket, the tedious steps of adjustment arch wire so that clinical manipulation is greatly simplified, and whole process of rescuing saves time and laborsaving.Therefore, mesh The front method of invisalign without bracket is used by increasing people.

In existing invisible orthotic device designs, the most such as by optics or industry CT scanning patient's tooth jaw plaster model Or die, or directly mouth interscan gathers the current dental status image of patient, and artificial according to original dental phenomenon by doctor Ground determines final orthodontic state, then by means of computer aided, at described original dental phenomenon with final Carry out mathematic interpolation between dental phenomenon, to obtain multiple intermediate teeth state, thus manufacture a series of invisible orthotic device.This The shortcoming of method for designing is, once it is determined that final dental phenomenon, a series of intermediate teeth states just have determined that, be difficult to (for example, avoid the collision of adjacent teeth for various complex situations, rescue target or patient and treating during rescuing The emergency situations of journey) adjusted, it is also difficult to it is separately provided for the different operating of same tooth and rescues parameter.Accordingly, it would be desirable to by A kind of invisible orthotic device method for designing being provided simultaneously with efficient and flexible feature.

In Application No. 201110222246.X of the applicant, 201110322561.X's and 201310018531.9 In application for a patent for invention, it is noted that progressively adjust dental phenomenon by space search method thus design the thought of invisible orthotic device, In this space search method, the tooth shape that next step is possible can be searched for from front to back by dental phenomenon based on previous step State, and without determining final dental phenomenon at the very start, thus opened up the probability of flexible design invisible orthotic device.

Summary of the invention

By the above-mentioned thought rescuing state by space search method design procedure, the present invention proposes a kind of concrete The determination tooth target method of rescuing state, it can be combined closely with actual demand of rescuing, determine step tooth neatly Tooth rescues target, thus designs, manufactures corresponding invisible orthotic device.

Correspondingly, according to an aspect of the invention, it is provided a kind of for determining the method that tooth target rescues state, It can comprise the following steps that

A) obtain the current dental phenomenon of patient or tooth and the state of perienchyma thereof, thus generate tooth or The underlying virtual model of tooth and perienchyma thereof；

B) reference curve is determined based on described underlying virtual model；

C) at least one is provided to rescue parameter；And

D) according to described at least one rescue parameter and described reference curve generates the first dummy model, described first virtual Model includes first group of state of rescuing rescuing step Tooth, rescues step and includes that first to N walks for wherein said first group Rescue step, wherein N >=1.

Thus obtained state of rescuing is likely to be and final desired rescues state, it is also possible to a simply step State of rescuing, thus be likely to require the state of rescuing obtained by above for further adjustments, such as in actual applications The collision avoided or adjust between adjacent teeth, adjust dental arch curve, adjust tooth moving step length or adjust other and rescue parameter Deng.Therefore, according to an optional embodiment of the present invention, the method can also comprise the following steps:

E) assess the first current dummy model whether to disclosure satisfy that and rescue requirement, if it is satisfied, then empty with described first Analog model rescues state as desired tooth target；If be unsatisfactory for, then:

F) rescue from described first group step selects X step rescue step, wherein N >=X >=1；

G) to described reference curve and/or described at least one rescue parameter and be adjusted, and according to described adjustment after At least one rescue parameter and/or reference curve generates the second dummy model, described second dummy model includes that second group is rectified Control the state of rescuing of step Tooth, rescue step and include that X to M step rescues step for wherein said second group, wherein M >=X； And

H) state of rescuing rescuing step Tooth and described second before being walked by the X in described first dummy model The state of rescuing rescuing step Tooth that X to M in dummy model walks forms the first current dummy model.

Further, optionally, it is also possible to comprise the following steps: repeat the above steps e) is to h), until current first virtual Model disclosure satisfy that rescues requirement, and as desired tooth target, the first current dummy model is rescued state.

Here, the requirement of rescuing as evaluation criteria is typically to follow standard and clinician, the patient of orthodontics Needs, for example, it is possible to consider in following medical factor is one or more: dental arch curve, crowded dentition degree, interproximal Amount, cover, laminating, dental arch bulging, Spee curve curvature, Bolton index, arch width, dental arch symmetry, tooth twist, Tooth shaft rake, tooth torque, denture center line and facial soft tissue profile etc..

1, dental arch curve: be arranged in order archwise along alveolar bone in dental bed upper teeth, the institute connecting the upper jaw is dentulous The curve of dental arch is dental arch of maxilla curve, and connect lower jaw the curve of dental arch dentulous be mandibular dental arch curve.

2, crowded dentition degree: the difference of the length of the summation of corona width and the existing radian of dental arch.If this value is just, tooth is described Bow exists crowded；If this value is negative, illustrate that dental arch exists gap.If this value is 0, illustrates that dental arch does not exist crowded, do not exist Gap.Corona width refers to the near and far maximum diameter of corona.The length that the dental arch i.e. dental arch of existing arc length is integral curved.The existing tooth of lower jaw Bow length be from mandibular first molar closely contact point along mandibular premolar cheek point, stomach teeth cusp through the incision of normal alignment Sound of baby talk incisxal edge is to the length of closely middle the done camber line of contact point of offside mandibular first molar.Labiad side as equal in whole lower incisor or tongue side During inclination, camber line should measure along the dental shelf top of lower incisor；The upper jaw existing dental arch arc length is also same acquisition.Normal denture Crowding should be 0 but it also may arranges a scope according to the concrete condition of patient, as long as the crowding of this patient's denture exists It is considered as within the scope of Gai meeting the requirements.

3, interproximal amount: interproximal is also referred to as proximal surface stripping, it is as a kind of one of method releasing crowded dentition, logical Cross the proximal surface micro cutting of multiple tooth, correction of the flank shape, make close-connected denture adjacent teeth contact relation disappear, form diastema.And Interproximal amount then characterizes the degree of stripping.

4, cover: also referred to as Anterior overjet, refer to the upper incisor incisxal edge horizontal range to lower incisor labial surface.Normal Anterior overjet one As be 2～4mm.

5, laminating, also referred to as labial teeth is laminating, refers to that lower incisor incisxal edge point is done vertical to upper incisor incisxal edge point to lower incisor labial surface Distance between the intersection point of line.It is said that in general, labial teeth is laminating 1/3 belongs to normal less than cutting of mandibular anterior teeth labial surface.

6, dental arch bulging: typically represented dental arch bulging by specific incisor position.Can be obtained by x-ray projection measurement.Subtract Little dental arch bulging can take gap, otherwise can produce gap.Chinese lower incisor bulging average is generally 96.5 ° ± 7.1.

7, Spee curve curvature: it is defined as, connects lower incisor and cuts one that ridge and other sound of baby talk point constitute and concave towards continuously On vertical curve of occlusion, also known as Spee curve.The method measuring bilateral mandibular dental arch Spee curve curvature is, measures dental arch and closes face Minimum point is constituted the distance of plane to the cusp to grind one's teeth in sleep under lower incisor cut end and last.It is said that in general, normal Spee is bent Line curvature is 2mm.Leveling Spee curve curvature needs to consume gap, and the computational methods consuming gap value are: measure left side respectively With right side Spee curve curvature, institute's total is added divided by 2, is leveling dental arch or corrects the gap closed required for curve.

8, Bolton index: the proportionate relationship sound of baby talk whole with the upperdental arch hat width of anterior teeth crown width summation is total up and down The proportionate relationship of sum.Can diagnose whether patient's upperdental arch exists the inharmonic problem of corona width with Bolton index. Method is to measure the width of upper lower jaw corona, draws following ratio:

6 anterior teeth crown width summations of labial teeth ratio=lower jaw/6, upper jaw anterior teeth crown width summation * 100%

Complete 12 anterior teeth crown width summations of tooth ratio=lower jaw/12, upper jaw anterior teeth crown width summation * 100%

The positive ordinary index of Bolton (Bolton, 1958) is:

Labial teeth ratio is 77.2 ± 0.22%

Full tooth ratio is 91.3 ± 0.26%

The Bolton index of Normal Chinese:

Labial teeth ratio is 78.8% ± 1.72%

Full tooth ratio is 91.5% ± 1.51%.

May determine that the uncomfortable of upperdental arch is to occur at the upper jaw or lower jaw according to above ratio, for labial teeth or whole tooth Width abnormal.

9, arch width: the measurement of arch width is generally divided into three sections and carries out, and is wide between intercanine width, bicuspid respectively Degree, intermolar width.

(1) intercanine width: reflection dental arch leading portion width.Measure the width between the canine tooth cusp of both sides.

(2) width between bicuspid: reflection dental arch stage casing width.Measure the width between the first bicuspid central fossa of both sides.

(3) intermolar width: reflection buccal segment width.Measure the width between the sixth-year molar central fossa of both sides.

10, dental arch symmetry: first determine center line, the width of measurement bilateral Homonym teeth to center line along Palatal suture on upper gnathode Degree, then can be appreciated that dental arch left and right sides is the most symmetrical, bilateral each Homonym teeth forward and backward the most at grade, if not same Plane then shows that side tooth has reach.

11, tooth twist: it is said that in general, refer to that the angle that tooth clinic dental arch tangent line and tooth axle are formed is torsion angle.Tooth If tooth seriously reverses, i.e. affect and attractive in appearance be also unfavorable for masticatory function.

12, tooth shaft rake: the angle that tooth clinical crown major axis is formed with conjunction plane vertical line is axial rake.Clinical crown major axis Gum end when tilting in remote shaft rake be on the occasion of, when mesial inclination, shaft rake is negative value.The shaft rake of normal occlusion is mostly On the occasion of.

13, tooth torque: the angle that tooth clinical crown tangent line is formed with conjunction plane vertical line is referred to as torque.Clinical crown tangent line gum Hold close plane vertical line rear be on the occasion of, otherwise be negative value.

14, denture center line: through an imaginary line two upper jaws or infradentale.If upper and lower two straight line weights Folded, illustrate that upper and lower dentition center line is consistent；If upper and lower two straight lines are the most overlapping, its difference is exactly upper and lower dentition Midline deviation amount.

15, facial soft tissue profile: the upper and lower lip state of face, nasal labial angle, facial profile etc. belong to facial soft tissue Profile.

In the present invention, described " reference curve " two-dimensional curve being probably in space coordinates (i.e. ignores curve width Degree) but it also may expanding to the three-dimensional curve with certain shape of cross section, such as cross section is that the three-dimensional of rectangular or square when is stood Body Fang Gong, as tooth reference of arrangement position in three dimensions.

An alternative embodiment according to the present invention, " reference curve " can be basis based on described underlying virtual model Dental arch curve and the target dental arch curve that determines, to be fitted Arch width by this curve.Wherein, target dental arch curve It is that manually regulation or computer are intended automatically according to normal data based on by the basic dental arch curve of computer fitting Conjunction determines.

Multiple different dental arch curve generating mode can be selected in the present invention.For example, it is possible to based on dummy model FA point (i.e. the midpoint of clinical crown height), abutment points or the Occlusal contact point of multiple teeth simulate dental arch curve.

An alternative embodiment according to the present invention, can select to cut in left and right first molar and left and right on dummy model The FA point of tooth, as four the datum mark P generating dental arch curve₀、P₁、P₂And P₃, and dental arch curve can be generated according to the following formula:

$P_{\mathrm{0,3}}\left(t\right)=\frac{1}{6}\left[\begin{array}{cccc}1& t& t^2& t^3\end{array}\right]\left[\begin{array}{cccc}-\mathrm{\α}& \mathrm{\β}& -\mathrm{\β}& \mathrm{\α}\\ \mathrm{\β}& \mathrm{\γ}& \mathrm{\β}& 0\\ -\mathrm{\β}& 0& \mathrm{\β}& 0\\ \mathrm{\α}& \mathrm{\ξ}& \mathrm{\α}& 0\end{array}\right]\left[\begin{array}{c}{P}_0\\ P_1\\ P_2\\ P_3\end{array}\right],t\∈\left[\mathrm{0,1}\right]$

Wherein, α, beta, gamma and ξ are constant value.Here constant value such as may be selected: α=1, β=3, γ=6, ξ=4.

Another alternative embodiment according to the present invention, it is also possible to based in the tongue side clinical crown of multiple teeth on dummy model Point simulates tongue side dental arch curve.

Optionally, at least one generating dummy model rescue parameter be selected from following parameter group or Multiple parameters: rescue guiding tooth；For producing the quantity rescuing step needed for one group of dummy model, rescue in step each Need the tooth of movement, at each moving direction rescuing step Tooth and amount of movement, and need stripping tooth and Stripping amount.

Optionally, guide tooth to be the anticipated amount of movement maximum determined according to described underlying virtual model one is rescued described in Or some teeth.

Optionally, calculate anchorage according to described underlying virtual model step to need move each rescuing described in determining Tooth, the moving direction of tooth and amount of movement.

And, described in rescue parameter and can also include the one or more parameter in following parameter group further: tooth can Dynamic degree of freedom limits scope, rescues target priority, the Time priority of stripping, the priority of gap acquisition pattern and model Enclose, the priority of gap disarmed mode and scope, the priority of gap reservation mode and scope, the adjustment direction of center line and Adjustment amount, and maxillomandibular occluding relation.

An alternative embodiment according to the present invention, is rescued ginseng based on described reference curve with at least one by computer Number, dodge according to collision in jaw and between jaw collision dodge algorithm progressively generate a series of rescue step Tooth rescue state, Thus form above-mentioned dummy model.

Wherein, for each dummy model (the such as first dummy model and the second dummy model), by computer according to institute At least one set rescues parameter and reference curve " from front to back " progressively generates and respectively rescues step in each dummy model Dental phenomenon in Zhou.As example, the step generating the first dummy model includes: i) based on described underlying virtual model, root According to described at least one rescue that parameter and described reference curve generate that the described first step rescues tooth in step rescue state； Ii) rescue state based on what the described first step rescued tooth in step, according to described at least one rescue parameter and described ginseng That examines that curve generates that second step rescues tooth in step rescues state；And iii) based on Y walk in tooth rescue shape State, according to described at least one rescue parameter and described reference curve generates that Y+1 step rescues tooth in step rescues shape State, wherein N-1 >=Y >=2, and N >=3.

By the said method of the present invention, can initial oral cavity tissue state based on patient and obtaining with virtual computing The matching of the reference curve arrived, designs neatly and adjusts orthodontic scheme, and it can set by area of computer aided easily Meter means realize, and improve automaticity and the efficiency of invisible orthotic device design.

According to another aspect of the present invention, additionally providing a kind of method for manufacturing dental appliance, it can lead to Cross said method and determine that the tooth target of patient rescues state, this tooth target rescue state and determine the shape of dental appliance Shape, thus produce the dental appliance with respective shapes.

Such as, obtained tooth target is rescued the data of state and can be transferred into dental appliance and manufacture equipment, tooth Tooth appliance manufactures equipment can form the mould (such as formpiston) of dental appliance according to these data according to general engineering method, Thus gone out there is the dental appliance of respective shapes by this Making mold.

Certainly, dental appliance manufactures equipment can also utilize three-dimensional printing technology, rescues shape according to described tooth target The data of state form the formpiston of described dental appliance, and are produced by this formpiston further and have the tooth of respective shapes and rectify Control device.

Further, dental appliance manufactures equipment can also utilize three-dimensional printing technology, rescues shape according to described tooth target The data of state determine the data of corresponding dental appliance, and directly form described orthodontic according to the data of dental appliance Device.

Optionally, described dental appliance is by having polymeric material manufacture toughness, the most transparent, thus shape Become the invisible orthotic device without bracket.

According to a further aspect of the invention, additionally provide a kind of method according to above-mentioned manufacture dental appliance and prepare Corresponding dental appliance.

By method of the present invention, can sequentially obtain next based on upper one dental phenomenon rescuing step all the time Individual rescue the dental phenomenon that step is possible, and without determining that dental phenomenon to be obtained from the beginning, improve and rescue The motility of conceptual design.It is additionally, since this method to carry out based on reference curve, is greatly reduced rescuing road Footpath carries out the scope of space search, improves design efficiency；Correspondingly can adjust with reference to bent according to actual clinical situation simultaneously Line and rescue parameter, and can select to start to re-search for follow-up dental phenomenon finally to be accorded with from arbitrary step of rescuing Closing and rescue the dental phenomenon of target, so that obtained, to rescue scheme the most reasonable.

Accompanying drawing explanation

The above-mentioned and other feature of the present invention will by below in conjunction with the accompanying drawings and describe in detail be described further.Should Being understood by, these accompanying drawings illustrate only the some exemplary embodiment according to the present invention, and it is right to be therefore not considered as The restriction of scope.Unless stated otherwise, accompanying drawing is not necessarily to scale, and wherein similar label represents class As parts.

Fig. 1 show a specific embodiment according to the present invention for obtaining the method that tooth target rescues state Flow chart；

Fig. 2 shows the exemplary embodiment determining reference curve based on underlying virtual model according to the present invention；

Fig. 3 shows the example of mobile single tooth on dummy model according to the present invention；

Fig. 4 A and Fig. 4 B shows of the computer flow chart for obtaining orthodontic state according to the present invention Individual exemplary embodiment；

Fig. 5 shows an exemplary process according to method of the present invention processing invisible orthotic device.

Detailed description of the invention

The following detailed description refer to constitute the accompanying drawing of this specification part.Showing mentioned by specification and drawings Meaning property embodiment, only merely for being illustrative purpose, is not intended to limit the scope of the invention.People in the art Member is appreciated that, it is also possible to uses other embodiments many, and described embodiment can be made various change, Purport and protection domain without departing from the present invention.It should be appreciated that the various aspects of the invention illustrating at this and illustrating Can arrange according to the most different configurations, replace, combine, separate and design, these different configurations are included in the present invention In.

Fig. 1 show a specific embodiment according to the present invention for obtaining the method that tooth target rescues state Flow chart.

In the method shown in Fig. 1, first obtain the current dental phenomenon of patient or tooth and week thereof in step S100 The state of Selvage Stitch (such as tooth groove mucosa, facial soft tissue).For example, it is possible to obtain denture ordered state by impression taking, by This generates physics tooth mould.Also can pass through optical scanning, X-ray imaging, ultra sonic imaging, tri-dimensional photographing, three-dimensional camera shooting or Medical CT are swept The method such as retouch directly obtains the image of tooth or tooth and perienchyma thereof.Then, step S110 generate tooth or The underlying virtual model of tooth and perienchyma thereof.For example, it is possible to by the scanning to physics tooth mould or to oral cavity tissue figure The computer disposal of picture, becomes tooth by the dental phenomenon collected in step S100 or tooth and perienchyma's State Transferring thereof Dentation state data set, thus can get tooth X in three dimensions, Y, Z coordinate, and it can be at figure circle of computer system On face, visualization shows and is manipulated (such as translate or rotate).Here, underlying virtual model can be original dental dentation state Maxillary dentition and/or the mandibular dentition of original dental phenomenon.

In step S120, based on obtained one reference curve of underlying virtual model generation (it can be two-dimensional curve, Can also be the three-dimensional curve with certain shape of cross section).The generation of underlying virtual model and reference curve such as will be by Fig. 2 is described further.The reference curve generated can be together with the dummy model of tooth or tooth and perienchyma thereof Shown by visualization.

In step S130, it is provided that what at least one was virtual rescues parameter, these are rescued parameter and represent corresponding tooth three Tie up the move mode in cartesian coordinate system and rescue the comprehensive of the middle medical factor that need to consider, such as, rescuing parameter and include The moving direction of tooth and amount of movement, specifically comprise the steps that the translational movement along X-axis, the translational movement along Y-axis, translation along Z axis Amount, the anglec of rotation around X-axis, the anglec of rotation around Y-axis, the anglec of rotation etc. around Z axis.And these rescue parameter also Define the parameter etc. relevant with stripping, interval of tooth and maxillomandibular occluding relation etc..

These rescue Orthodontic force (power in different directions and/or the moment) phase that parameter will apply to tooth with appliance Close.In some cases, parameter also referred to as " power system " or " operator " are rescued.According to clinical case statistical data, permissible Generate corresponding standard and rescue parameter (" power system " or " operator " in other words) data base, which represent under different dental state During applying Orthodontic force, tooth can mobile situation.Suitable standard can be selected from this data base to rescue parameter, with application In described underlying virtual model, by computer matching treatment, can obtain rescuing after parameter makes tooth move by applying State (this state can also be visualized display by graphic user interface equally).

Alternatively, rescuing parameter manually can also be applied according to actual clinical situation and clinical experience by operator, example As directly rescued the type of parameter and concrete numerical value to computer input, thus carry out rescuing the setting of parameter.About rescuing ginseng Particular type and the set point of number will be discussed further.

Then, in step S140, according to described at least one rescue parameter and described reference curve generates the first virtual mould Type.Specifically, be the corresponding tooth application on described underlying virtual model described at least one virtual rescue parameter, with Corresponding tooth is made (to rescue the value of step N to fall within least one and rescue wherein in parameter according to the quantity rescuing step Individual rescue parameter) and set other rescue parameter and progressively move from initial condition, be fitted with described reference curve.Should The process generating the first dummy model is properly termed as " rescuing step for first group " or " row's tooth process for the first time ", and this is arranged for the first time Tooth process includes that N step rescues step, and each step is rescued the tooth of all corresponding underlying virtual model of step and arrived after virtual movement Reach each rescues state, and these states are exactly likely that desired tooth target rescues state, but in most of the cases, May need to adjust further.

Wherein, according to described at least one rescue parameter and described reference curve to generate the step of the first dummy model concrete Including: i) based on described underlying virtual model, according to described at least one rescue parameter and described reference curve and generate described the What one step rescued the tooth in step rescues state；Ii) the state of rescuing of tooth in step, root is rescued based on the described first step According to described at least one rescue that parameter and described reference curve generate that second step rescues tooth in step rescue state；And Iii) same, for follow-up step, state of rescuing based on the tooth in previous step generates in later step the most all the time Tooth rescue state, both situations of N >=3, be also based on the state of rescuing of tooth in Y step, according to described at least one Rescue parameter and described reference curve generates Y+1 step and rescues the state of rescuing of the tooth in step, wherein N-1 >=Y >=2.That is, The present invention is according to rescuing parameter and reference curve, rescues the state of rescuing of tooth in step " from going to based on back Gradually generate the state of rescuing of the follow-up tooth rescued in step afterwards ", thus generate a series of tooth rescued in step Rescue state.Concrete computer process about the state of rescuing how generating a series of tooth rescued in step will below Middle combination Fig. 4 A-4B illustrates.

Due to tooth original state and the form of tooth and the difference rescuing target, mobile after dental phenomenon may will not Be consistent completely with reference curve, and may not meet other rescue target.Now, it is still necessary to these states are made into one Successive step.

According to this embodiment, a series of tooth targets in the first dummy model that the assessment of step S150 is current rescue shape Whether state can meet is rescued requirement.This such as can based on dental arch curve, crowded dentition degree, interproximal amount, covering, laminating, Dental arch bulging, Spee curve curvature, Bolton index, arch width, dental arch symmetry, tooth twist, tooth shaft rake, tooth One or more in the medical factors such as tooth torque, denture center line, facial soft tissue profile judges.

Specifically, both can manually be determined, according to its clinical practice, every doctor that above-mentioned tooth target is rescued by doctor Whether factor meets requirement；The standard database that corresponding target is rescued can also be generated according to clinical case statistical data, Which represent and can rescue state as the target of the tooth of reference.The target that can select suitable standard from this data base is rectified Control state, with by computer matching treatment, determine whether the first current dummy model meets and rescue requirement.

If the first current dummy model has been able to meet rescues requirement, the first the most current dummy model is exactly institute Desired tooth target rescues state, then the method terminates in step S160.Otherwise, the method proceeds to step S170.

In step S170, further according to rescuing requirement, determine that the X step during row's tooth of above-mentioned first time rescues step The dental phenomenon risen does not meets to be rescued requirement and needs to reset.That is, according to rescuing requirement, by doctor according to its clinical practice messenger Work determines or is determined that the X step during first time row's tooth rescues the tooth before step by computer according to standard database Dentation state need not reset, and have only to again simulate X step and rescue step and the dental phenomenon rescuing step afterwards.Described X is in the range of N >=X >=1, it may be preferable that X is any integer more than 1 and less than N.

Then, in step S180, to reference curve and/or described at least one to rescue parameter for further adjustments, and Rescue parameter according at least one after described adjustment and reference curve generates the second dummy model.

Here, the process of the adjustment of reference curve is similar with step S120, such as at the tooth of current first dummy model Again take FA point under state and calculate the basic dental arch curve made new advances, then generating new target dental arch curve using as adjustment After reference curve.The basis form of dental arch curve and/or length can also be manually adjusted to generate adjustment by operator After reference curve.

Further, at least one value rescuing parameter can also be adjusted in step S180, need movement for example, it is possible to adjust Tooth, the priority etc. of proximal surface stripping.

Here, it should be noted that can need according to actual clinical or come with judgement according to the experience of operator I.e. adjust reference curve, be also adjusted rescuing parameter；Or also can only adjust reference curve or only adjust and rescue parameter. That is, the reference curve after adjustment is the most likely equal to the reference curve being also possible to before being different from adjustment, after same adjustment Rescue parameter to be the most likely equal to be also possible to rescue parameter before being different from adjustment.

It follows that in step S180, according to the mode with step S140, rescue ginseng according at least one after described adjustment Reference curve after number and adjustment generates the second dummy model.Specifically, it is the dental phenomenon rescuing step to above-mentioned X step On the application of corresponding tooth adjust after rescue parameter, so that corresponding tooth rescues step according to rescuing step from X step Dental phenomenon progressively move, with adjust after reference curve be fitted.

The process of this generation the second dummy model is properly termed as " rescuing step for second group " or " second time row's tooth process ", This second time row's tooth process includes that X step rescues step to M step, and M both can rescue step equal to for the first time row's tooth process Quantity N, it is also possible to be different from N.Determine the value of M according to actual clinical situation by operator.

In step S190, the X in described first dummy model before walking rescue step Tooth rescue state The state of rescuing rescuing step Tooth walked with the X to M in described second dummy model is gradually connected, new to obtain The first current dummy model, which represent according to the new tooth shape arrived after assessing, adjusting and again arrange the process of tooth State.Now, rotate back into step S150, again perform above-mentioned evaluation process, and as required to reference curve and/or rescue parameter Again it is adjusted, and again arranges tooth, until it reaches disclosure satisfy that the desired tooth target rescuing requirement rescues state.

Therefore, the process obtaining a series of target tooth state of the present invention performs, from front to back the most all the time by front One dental phenomenon determines later dental phenomenon rather than carries out interpolation according to original state and end-state, obtain centre State, thus meet the basic thought of space search method, it is possible to orthodontic state is adjusted flexibly.

Fig. 2 shows the exemplary embodiment determining reference curve according to the present invention based on underlying virtual model.Real at this Executing in example, reference curve is the dental arch curve that target dental arch curve, i.e. target tooth rescue state.Here, first according to tooth Initial condition, i.e. according to underlying virtual model generation basis dental arch curve, is then based further on this basis dental arch curve and generates Target dental arch curve.

Multiple method is had to may be used for generating basis dental arch curve.Such as crowded dentition case when, institute The dental arch curve determined is the dental arch curve of tooth lip side.Figure 2 illustrates the front view of the dummy model of a mandibular dentition, Figure acceptance of the bid shows the overall three Cartesian coordinates of tooth model, and its initial point O may be selected in the several of this mandibular dentition model What center.The mandibular dentition model that this is virtual selects the FA point of left and right first molar and left and right central incisor respectively, as Generate four datum mark P of basis dental arch curve₀、P₁、P₂And P₃.These four datum marks in three Cartesian coordinates Space coordinates can be expressed as P₀(X0,Y0,Z0)、P₁(X1,Y1,Z1)、P₂(X2, Y2, Z2) and P₃(X3, Y3, Z3), wherein X0～3, Y0～3, Z0～3 be corresponding datum mark value on X, Y, Z-space coordinate axes.

" FA point " mentioned here refers to that clinical crown surface, even commissura are to the midpoint of the FACC curve of gum edge.For cutting For tooth, canine tooth and premolars, FACC is exactly clinical crown buccal labial surface center line；For grinding one's teeth in sleep, FACC walks along buccal groove direction OK, its two ends are called " chalaza " and " gum point ".

Based on aforementioned four datum mark P₀、P₁、P₂、P₃, can be according to equation below (1) generation basis dental arch curve:

$P_{\mathrm{0,3}}\left(t\right)=\frac{1}{6}\left[\begin{array}{cccc}1& t& t^2& t^3\end{array}\right]\left[\begin{array}{cccc}-\mathrm{\α}& \mathrm{\β}& -\mathrm{\β}& \mathrm{\α}\\ \mathrm{\β}& \mathrm{\γ}& \mathrm{\β}& 0\\ -\mathrm{\β}& 0& \mathrm{\β}& 0\\ \mathrm{\α}& \mathrm{\ξ}& \mathrm{\α}& 0\end{array}\right]\left[\begin{array}{c}{P}_0\\ P_1\\ P_2\\ P_3\end{array}\right],t\∈\left[\mathrm{0,1}\right]$ Equation (1)

Wherein, α, beta, gamma and ξ are the constant value suitably selected, for example, it is possible to value is α=1, β=3, γ=6, ξ=4.When So, it is also possible to choose other different constant values.

P₀、P₁、P₂And P₃X in three Cartesian coordinates of four datum marks, Y, Z component can be expressed as:

$X\left(t\right)=\frac{1}{6}\left[\begin{array}{cccc}{t}^3& t^2& t& 1\end{array}\right]\left[\begin{array}{cccc}-\mathrm{\α}& \mathrm{\β}& -\mathrm{\β}& \mathrm{\α}\\ \mathrm{\β}& \mathrm{\γ}& \mathrm{\β}& 0\\ -\mathrm{\β}& 0& \mathrm{\β}& 0\\ \mathrm{\α}& \mathrm{\ξ}& \mathrm{\α}& 0\end{array}\right]\left[\begin{array}{c}{X}_0\\ X_1\\ X_2\\ X_3\end{array}\right],t\∈\left[\mathrm{0,1}\right]$ Equation (2)

$Y\left(t\right)=\frac{1}{6}\left[\begin{array}{cccc}{t}^3& t^2& t& 1\end{array}\right]\left[\begin{array}{cccc}-\mathrm{\α}& \mathrm{\β}& -\mathrm{\β}& \mathrm{\α}\\ \mathrm{\β}& \mathrm{\γ}& \mathrm{\β}& 0\\ -\mathrm{\β}& 0& \mathrm{\β}& 0\\ \mathrm{\α}& \mathrm{\ξ}& \mathrm{\α}& 0\end{array}\right]\left[\begin{array}{c}{Y}_0\\ Y_1\\ Y_2\\ Y_3\end{array}\right],t\∈\left[\mathrm{0,1}\right]$ Equation (3)

$Z\left(t\right)=\frac{1}{6}\left[\begin{array}{cccc}{t}^3& t^2& t& 1\end{array}\right]\left[\begin{array}{cccc}-\mathrm{\α}& \mathrm{\β}& -\mathrm{\β}& \mathrm{\α}\\ \mathrm{\β}& \mathrm{\γ}& \mathrm{\β}& 0\\ -\mathrm{\β}& 0& \mathrm{\β}& 0\\ \mathrm{\α}& \mathrm{\ξ}& \mathrm{\α}& 0\end{array}\right]\left[\begin{array}{c}{Z}_0\\ Z_1\\ Z_2\\ Z_3\end{array}\right],t\∈\left[\mathrm{0,1}\right]$ Equation (4)

Although a kind of concrete basic dental arch curve computational methods mentioned above, but those skilled in the art can manage Solving, the basic dental arch curve in the present invention can have multiple calculation, and is not limited to specific embodiment described above.Example As, it is also possible to the FA point of selection left and right first molar, canine tooth and left and right central incisor is as 6 datum marks, thus simulates basis Dental arch curve.

As an alternative, three abutment points in backteeth district and incisor district can be chosen, and simulate based on these three abutment points Basis dental arch curve, " abutment points " here refers to that corona dissects profile bump on this near and far direction of tooth coordinate system.

As another alternate embodiment, it is also possible to arrange the normal occlusion contact point of normal tooth in choosing dental arch, Thus simulate basis dental arch curve.Here going up mandibular dentition and can reach stability contact by two ways, one is cusp Relative with tooth nest, another kind is that cusp is relative with marginal ridge, all can realize stable vertically stopping contact.

In addition it is also possible to choose the reference curve of tongue side.In such a case, it is possible to select the first of dental arch both sides respectively Grind one's teeth in sleep, frist premolar, canine tooth and the clinical crown midpoint, tongue side of central incisor, thus simulate the base of the tongue side of " mushroom-shaped " Plinth dental arch curve.

Further, basic dental arch curve based on Fig. 2, form target dental arch curve, this target dental arch curve by regulation Will be as reference curve.Here, operator can be according to orthodontic requirement, the base that will be formed on computer graphical interface Plinth dental arch curve is manually finely tuned, by adjusting Arch width and arch length (lip is opened up, expanded bow, distalization for maxillary molar) with shape Become target dental arch curve, it is also possible to concentrated choosing by computer according to the standard target dental arch curve formed based on case database Select suitable standard target dental arch curve, using the target dental arch curve as current case.Described regulation process and target dental arch Curve all dynamically can be shown by computer graphical interface so that whether operator can meet with object observing dental arch curve Orthodontic requirement.In a specific embodiment, if doctor according to clinical practice situation judge the labial teeth of case prominent from And if receiving in needing, the basic dental arch curve formed in accompanying drawing 2 can be regulated, in making the labial teeth section of this basis dental arch curve Receive, thus form target dental arch curve.

As shown in the flow chart in Fig. 1, after obtaining target dental arch curve, make underlying virtual tooth model based on this target tooth Bow line and at least one rescue parameter and carry out arranging for the first time, thus obtain first group rescue step Tooth rescue shape State.Then judge that these rescue whether state meets orthodontic requirement.As met orthodontic requirement, then as institute's phase The dbjective state hoped；If do not met, then need adjust target dental arch curve further and rescue parameter, until it reaches clinical strong Control requirement, obtain desired dbjective state, and thus process appliance.

Fig. 3 shows an example of mobile single tooth on dummy model.Figure showing, single premolars is three Tieing up the position in cartesian space, it can be represented by the coordinate points on tri-coordinate axess of X, Y, Z, and initial point O is positioned at this tooth Geometric center, this coordinate system is also referred to as the local coordinate system of tooth model.Rescue parameter (power system) by applying, can be made this Tooth translates on three change in coordinate axis direction and/or rotates, including: along the translation of X-axis forward, along the translation of X-axis negative sense, along Y Axle forward translates, translates along Y-axis negative sense, translates along Z axis forward, translates along Z axis negative sense, turns clockwise along X-axis, inverse along X-axis Hour hands rotate, turn clockwise along Y-axis, rotate counterclockwise along Y-axis, turn clockwise along Z axis and rotate counterclockwise along Z axis. For example, it is possible to manually input is rescued the premolars in parameter instruction Fig. 3 and is moved 0.2mm in the X-axis direction, or around X Axle rotates 2 ° counterclockwise.

This moving process of virtual tooth such as can show the most intuitively, it is also possible to by operation Personnel's dragging on a display screen realizes tooth and moves, so that the form of tooth and position are intended to aim curve as far as possible Closing, dental morphology and position after moving can be used as new virtual tooth model.It is of course also possible to on virtual tooth model Selected multiple teeth apply virtual at least one rescue parameter, make multiple teeth move simultaneously, thus investigate and rescue applying Influencing each other between them during power.

Below by specifically introduce be used for generating dummy model rescue parameter.Above-mentioned at least one rescue parameter include from The one or more parameter selected in lower parameter group: rescue guiding tooth；Step is rescued needed for producing one group of dummy model Quantity, each rescuing, step needs the tooth of movement, at each moving direction rescuing step Tooth and amount of movement, And need tooth and the stripping amount of stripping.

Described at least one rescue the one or more parameter that parameter farther includes in following parameter group: tooth is movable Degree of freedom limits scope, rescues target priority, the Time priority of stripping, the priority of gap acquisition pattern and scope, The priority of gap disarmed mode and scope, the priority of gap reservation mode and scope, the adjustment direction of center line and tune Whole amount, and maxillomandibular occluding relation.

Hereinafter will be described in detail above-mentioned at least one implication rescuing parameter and set point.

1) first introduction rescues guiding tooth and for producing the number parameter rescuing step needed for one group of dummy model.Face Bed doctor is according to the current dental phenomenon of patient or tooth and the state of perienchyma thereof, or according to tooth or tooth And the underlying virtual model of perienchyma may determine which tooth of patient or which tooth are to misplace it will be evident that i.e. Determine which or which tooth be probably during rescuing the tooth that required amount of movement is maximum, so that it is determined that " rescue Guide tooth ".And based on rescuing the quantity rescuing step set during guiding tooth determines to arrange tooth each time, i.e. it is used for producing The quantity rescuing step needed for raw one group of dummy model.Although, it is however generally that, rescue the preferably dislocation of guiding tooth the most obvious One or some teeth, but the present invention rescue guiding tooth be not merely limited as " misplace the most obvious one or Some teeth ", it is also possible to it is field doctor or empirically determined other teeth of operator.Rescue guiding tooth the most permissible It is set in initial rescuing in step to move, it is also possible to be arranged on rescuing in step of centre and move.Preferably, setting is rescued and is drawn Lead periodontal tooth first to move progressively to produce the space that can allow for rescuing guiding Tooth movement with less amount of movement, thus Make to rescue the enough spaces of guiding tooth acquisition to move.And rescue and guide the quantity of tooth and rescue the anticipated of guiding tooth The quantity rescuing step set during amount of movement impact row's tooth each time.Preferably, tooth can be guided according to rescuing Quantity, the anticipated amount of movement rescuing guiding tooth and other actual clinical need first group that sets generation the first dummy model and rectify Control and step (i.e. for the first time row tooth process) rescues step, such as, set the value rescuing step N as 20.According to the present invention, institute The quantity rescuing step set during stating row's tooth each time can according to clinical practice situation and needing be set as 1 to Arbitrary integer between 100, such as 10,15,17,20,35,46,58,61,70,85,91 etc., it is highly preferred that described each time During row's tooth, the set quantity rescuing step can be the arbitrary integer between 10 to 20, such as 10,15,17,20.

2) described each rescuing, step needs the tooth of movement, can according to clinician according to orthodontics or The demand of rescuing of patient determines, maxillomandibular every tooth can arrange three kinds of situations (to be needed dynamic tooth, if desired may be used Dynamic tooth, and immotile tooth), so that it is determined that need mobile, the most movable and can not in rescuing step Dynamic tooth.

Preferably, can set respectively in each step rescuing in step needed for producing one group of dummy model and need Tooth to be moved.Preferably, for each single jaw, each step of rescuing can be set and at least move a tooth, at most move Dynamic 16 teeth.And can be set each and rescue the concrete tooth needing movement in step.

Preferably, calculate anchorage according to described underlying virtual model step to need move each rescuing described in determining Tooth.During so-called " anchorage " refers to orthodontic therapy, any imposing on rescues that power that tooth moves it is inevitable to be produced simultaneously One power in opposite direction, that size is identical, this can resist the structure of Orthodontic force counteracting force.I.e. anchorage is to rescue for support Power, the structure of the counteracting force of opposing Orthodontic force or unit.The distribution of anchorage suffered when moving according to every tooth, can To distribute the tooth needing movement in each step, and distributed by anchorage each step needs the tooth of movement If, so that the power that the dental appliance prepared according to the present invention applies is not over the receptible water of orthodontia Flat, the discomfort causing patient is without departing from acceptable amount.Each step needs move by considering that anchorage is distributed Tooth, it is ensured that dental appliance realize reasonably correct path.

3) described at each moving direction rescuing step Tooth and amount of movement parameter it is: every tooth is rectified each Control the moving direction in step and amount of movement, specifically comprise the steps that the translational movement along X-axis, the translational movement along Y-axis, putting down along Z axis Shifting amount, the anglec of rotation around X-axis, the anglec of rotation around Y-axis, the anglec of rotation around Z axis.

Such as: the translational movement along X, Y and Z axis could be arranged to a value between 0.05 to 2mm, such as: 0.05mm, 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 1mm, 1.5mm, 2mm, etc..It is highly preferred that described translational movement can be set as A value between 0.2 to 0.3mm, such as 0.2mm, 0.25mm, 0.3mm etc..And, described translational movement may be arranged as A numerical range between 0.05 to 2mm, such as: 0.1mm≤translational movement≤1mm, 0.05mm≤translational movement≤2mm, 0.1mm ≤ translational movement≤1.5mm, 0.5mm≤translational movement≤2mm etc..

Such as: the anglec of rotation around X-axis, Y-axis and Z axis can be respectively set to a value between 0.05 to 5 degree, Such as: 0.05 degree, 0.1 degree, 0.2 degree, 0.5 degree, 1 degree, 1.5 degree, 2 degree, 2.5 degree, 3 degree, 4.7 degree, 5 degree etc..It is highly preferred that institute State the anglec of rotation and can be set as a value between 1 to 3 degree, such as 1.3 degree, 2.5 degree, 3 degree etc..And, described around X The anglec of rotation of axle, Y-axis and Z axis can also be respectively set to a numerical range between 0.05 to 5 degree, such as: 0.05 Degree≤the anglec of rotation≤2 degree, 0.1 degree≤anglec of rotation≤0.2 degree, the 0.05 degree≤anglec of rotation≤5 degree etc..

Again it is preferred to, when setting each moving direction rescuing step Tooth and amount of movement parameter, take into full account The impact of anchorage, determines the distribution of the anchorage suffered when moving of every tooth by calculating anchorage, rectifys so that it is determined that each Control moving direction and the amount of movement of step Tooth, so that the power that the dental appliance prepared according to the present invention applies will not surpass Crossing the receptible level of orthodontia, the discomfort causing patient is without departing from acceptable amount.At a preferred embodiment In, and crown surfaces long-pending based on root surface amasss the value calculating anchorage, to determine each moving direction rescuing step Tooth And amount of movement.

4) interproximal, also referred to as proximal surface stripping (IPR), as a kind of mode obtaining gap, during being orthodontic Needs consider to obtain very important factor.Can be by needing tooth and the parameter of stripping amount of above-mentioned stripping, for every two Individual adjacent teeth sets it respectively the need of proximal surface stripping and the scope of proximal surface stripping.In some embodiments, permissible Set and between whole maxillary teeth, need proximal surface stripping, and need not proximal surface stripping between whole lower jaw tooth.In some other realities Execute in mode, can be that every two interdental stripping amount set a maximum IPR amount, minimum IPR amount and the suitableeest IPR Amount.And may be set in concrete which to rescue step needs proximal surface stripping and stripping amount.Such as: may be set in The total stripping amount between specific two teeth before 10 steps.Industry is it will be recognized by the skilled artisan that proximal surface stripping amount can basis Patient's concrete condition suitably adjusts.

5) the Time priority parameter of described stripping can for each two adjacent teeth set respectively can first stripping with And the priority of IPR.Such as, described IPR priority can be set as 1,2 or 3, and wherein priority 1 represents necessary adjacent Face stripping；And 2 represent preferential proximal surface stripping；3 then represent it is contemplated that proximal surface stripping.Industry it will be recognized by the skilled artisan that The Time priority parameter of stripping suitably can adjust according to patient's concrete condition.

6) described tooth is movable degree of freedom limits range parameter and includes that the degree of freedom of following 6 aspects limits scope: 1) Words to restriction scope；2) the restriction scope of middle-distant direction；3) vertically to restriction scope；4) the restriction scope reversed；5) The restriction scope of positive axis；6) the restriction scope of torque.

Wherein, above-mentioned words to degree of freedom limit scope further include the words of the upper jaw-labial teeth to mobile model Enclose；The words of the upper jaw-backteeth to moving range；The words of lower jaw-labial teeth to moving range and the words of lower jaw-backteeth To moving range.Wherein the moving range of the upper jaw-labial teeth can be defined as not moving, lip shifting/tongue moves < 3mm or by operating Person is self-defined according to case scenario；And the moving range of the upper jaw-backteeth can be defined as not moving, cheek shifting/tongue move < 2mm or Self-defined according to case scenario by operator；And the moving range of lower jaw-labial teeth can be defined as not moving, lip shifting/tongue move < 3mm or self-defined according to case scenario by operator；And the moving range of the upper jaw-backteeth can be defined as not moving, cheek Shifting/tongue moves < 2mm or self-defined according to case scenario by operator.

Wherein, the restriction scope of above-mentioned middle-distant direction can be defined as < 3mm or made by oneself by operator according to case scenario Justice.

Wherein, above-mentioned vertically to degree of freedom limit scope include the upper jaw-labial teeth vertical to moving range；The upper jaw- Backteeth vertical to moving range；The moving range of lower jaw-labial teeth and the vertical of lower jaw-backteeth to moving range.And The upper jaw-labial teeth vertical to moving range, the upper jaw-backteeth vertical to moving range, lower jaw-labial teeth vertical to shifting Dynamic scope and lower jaw-backteeth vertical to moving range can define respectively, and the arbitrary ginseng in aforementioned four parameter Number all can be defined as not moving, extend/force down < 2mm or self-defined according to case scenario by operator.

Wherein, the restriction scope of above-mentioned torsion, the restriction scope of positive axis and torque can define respectively, and above-mentioned three Arbitrary parameter in individual parameter can be defined as adjusting according to normal data, not correcting or by operator according to case scenario Self-defined.In some embodiments, the restriction scope of described torsion, positive axis and torque is all defined as < 0 °.

7) rescuing target priority described in is the priority according to the scheme of rescuing set by case scenario, and it is according to medical science On target of rescuing may include that interior receipts, aligning, leveling arch etc..

8) priority order parameters of described gap acquisition pattern includes setting proximal surface stripping, lip exhibition, expansion bow, tooth of turning a millstone, pulling out The modes such as tooth are to obtain gap；The range parameter in gap then can set the scope in gap, such as 0-3mm；And also it is permissible Which it is set in concrete to rescue step and obtain gap.For example, it is possible to be set in the 1st to 13 step to obtain gap.

9) same, the priority order parameters of described gap disarmed mode receives in including setting labial teeth, and backteeth reach etc. releases The mode in gap, the range parameter in gap then can set the scope in gap, such as 0-3mm；And also may be set in tool Which of body is rescued step and releases gap.For example, it is possible to be set in the 1st to 13 step to release gap.

10) and the priority order parameters of gap reservation mode include for every two interdental gaps (the such as upper jaw Adjacent two interdental gaps in 16 teeth, with adjacent two interdental gaps in the 16 of lower jaw teeth) set Determine the priority of preset clearance, such as, described between slot reservation order can be set as 1,2 or 3, wherein priority 1 represents Must preset clearance；And 2 represent preferential preset clearance；3 then representative can be with preset clearance.

And the range parameter of described gap reservation mode includes: for the model in setting gap, every two interdental gaps Enclose, i.e. the maximum in gap and the minimum in gap.Such as, what the maximum in described gap can be set as in 0-3mm is any Value；And the minimum in described gap can be set as the arbitrary value in 0-1mm.

11) adjustment direction and the adjustment amount parameter of described center line includes: to maxillomandibular center line (through the upper jaw or lower jaw Two central incisors between an imaginary line, i.e. denture center line) set adjustment direction and adjustment amount, wherein said tune respectively Perfect square is moved to the left and moves right to including, and the side-play amount that adjustment amount is dentition center line according to case and symmetry Situation needs the amount adjusted.Such as, the adjustment amount of described center line could be arranged to a value between 0 to 2mm.Implement at some In mode, because there is not drift condition in the initial center line of case, it is possible to maxillomandibular left and right side-play amount is disposed as 0。

12) described maxillomandibular occluding relation parameter includes: canine tooth relation, molar relation, covers and laminating.Described point Mandibular joint system includes the canine tooth relation on the canine tooth relation on the left of lower jaw and right side, and described molar relation also includes on the left of lower jaw Molar relation and the molar relation on right side；Described covering is then the upper incisor incisxal edge horizontal range to lower incisor labial surface, and Described laminating, it is lower incisor incisxal edge point to upper incisor incisxal edge point distance between the intersection point of the done vertical line of lower incisor labial surface.Institute State the canine tooth relation on the canine tooth relation on the left of lower jaw and right side, the molar relation on the left of upper lower jaw and the molar relation on right side, Covering and laminating value all rationally can be arranged according to clinical setting, such as, above-mentioned parameters can be respectively set to a) Do not change, i.e. remain stationary；B) standard value is changed into；And c) by the self-defining value of operator.

According to the detailed description of the invention of the present invention, for the above-mentioned each item rescued in parameter, computer all can be passed through Graphical interfaces is set by operator, rescues parameter set by combination, and is applied on virtual tooth model.And And, in actual applications, one or more parameter therein can be selected to be configured in conjunction with the concrete condition of case.Follow-up The setting of described parameter will be further described by the example in description in conjunction with concrete case.

It is all according to above-mentioned reference curve and described at least that each of which step rescues the state of rescuing of the tooth in step Individual rescue parameter, rescue the rescuing state of tooth in step based on previous step and generate.Specifically, it is by computer base In described reference curve and at least one rescue parameter, dodge according to collision in jaw and between jaw, collision dodged algorithm and progressively generated one What series rescued step Tooth rescues state.

Collision and jaw in the jaw that Fig. 4 A-4B uses during showing row's tooth of a specific embodiment according to the present invention Between the flow chart of collision algorithm.

Wherein, Fig. 4 A is the search tooth in same jaw (upper jaw or lower jaw) of a specific embodiment according to the present invention The flow chart of collision in the jaw of gear mutation state.First, in step s 201, the tooth collision circulation carrying out same jaw is (i.e. same The position arrangement circulation of one jaw inner teeth gear state), and in step S202, judge whether obtained tooth position arrangement deposits Collide in jaw, if collision in jaw, then forward step S203 to, i.e. dental phenomenon arrangement flow process moves forward one Step.Subsequently, in step S204, it may be judged whether reached and rescued target, rescue target if reached, then enter S205, i.e. enter Enter the flow process of next link；Otherwise it is accomplished by coming back to S202, redefines and whether there is collision in jaw.

Further, if judging that in step S202 obtained dental phenomenon collides in there is jaw, then step is forwarded to S206, returns to previous step to create gap；Then, in step S207, it may be judged whether tooth can be carried out middle-distant direction Movement, if it is determined that if the movement on middle-distant direction can be carried out, then enter step S209, and move at middle-distant direction One step, and come back to step S202, to judge middle-distant direction collides in whether there occurs jaw after moving.

If in step S207, it is judged that tooth can not be carried out the movement of middle-distant direction, then enter step S208, With further determine whether to carry out lip/tongue to movement, if it is determined that can carry out lip/tongue to movement if, then enter Step S210, and move a step to shifting at lip/tongue, and come back to step S202 step, to judge that lip/tongue is after movement No there occurs collision in jaw, and be circulated further according to above-mentioned steps.

If in step S208 judge tooth can not be carried out lip/tongue to movement, then enter step S211, pass through The above gap acquisition pattern is to stop that the tooth that this tooth lip/tongue moves creates gap, and creates in step S211 After making gap, come back to step S202 step, to judge to collide in whether there is also jaw after creating gap, and further according to Above-mentioned steps is circulated.

While there is not collision between the tooth in collision algorithm determines same jaw in above-mentioned jaw, it is also desirable to pass through Between jaw, collision algorithm determines whether there is collision between maxillomandibular tooth.

Fig. 4 B be between the upper and lower jaw of a specific embodiment according to the present invention by between jaw collision search tooth shape The flow chart of state.Wherein, in step S301, carry out the collision circulation of tooth between upper lower jaw, and judge in step s 302 Obtained by tooth arrangement state jaw between whether collide >=0.2mm, if a determination be made that if " YES ", then forward step to S303, i.e. returns previous step and re-moves.Subsequently, in step s 304, select suitably to dodge mode, and in step S305 In, correspondingly dodge a step.Then, in step S307, re-start in jaw and judge between jaw.And if the sentencing of step S302 If disconnected result is " NO ", then forwarding step S306 to, upper lower tooth respectively makes a move, and subsequently enters in S307, re-starts jaw in jaw Between judge.

In sum, by collision algorithm in above-mentioned jaw and between jaw, join based on reference curve and set virtual orthodontic treatment Number, the optimum position of search one by one dental phenomenon, thus " from front to back " progressively determine in the first and second dummy models every What one step rescued step Tooth rescues state, it is achieved the automatization of row's tooth process.

Hereinafter, for one of them specific embodiment according to the present invention for concrete case generate tooth target rescue shape The method of state.

First, obtain the three-dimensional coordinate data of basis tooth model, and rebuild the three-dimensional of tooth model by microcomputer modelling Image is also shown to operator by the user interface of computer.

Then, by computer based on bilateral first molar, canine tooth and central incisor FA point (totally 6 points), by computer based on These 6 some automatic Fittings form a three-dimensional dental arch curve, and show in the 3-D view of tooth model.Respectively Form basic dental arch curve and the basic dental arch curve of lower jaw of the upper jaw.After initial dental arch curve is formed, manually carry out the most micro- Adjusting and form target dental arch curve, in this embodiment, reference curve is target dental arch curve.

Then, according to case scenario set following at least one rescue parameter:

1) need the tooth of movement: 17,16,15,14,13,12,11,21,22,23,24,25(wherein, above-mentioned numeral is Numbering tooth carried out according to international numerical symbol system).

2) tooth and the stripping amount of stripping are needed:

Maxillary teeth not stripping；

Mandibular teeth stripping；

Stripping 0.3mm it is total between 32-33 tooth before 2nd step；

Stripping 0.3mm it is total between 31-32 tooth before 13rd step；

Stripping 0.3mm it is total between 41-31 tooth before 13rd step；

Stripping 0.3mm it is total between 42-41 tooth before 13rd step；

3) each moving direction (X, Y and the translation of Z axis and rotation) rescuing step and amount of movement scope:

0.1≤△X≤0.25(mm)

0.1≤△Y≤0.25(mm)

0.05≤△Z≤0.2(mm)

0.5≤∠ X≤2.0 (are spent)

0.5≤∠ Y≤2.0 (are spent)

0.5≤∠ Z≤3.0 (are spent)

4) six-freedom degree restriction scope:

Words to:

The upper jaw-labial teeth: < 3mm

The upper jaw-backteeth: < 2mm

Lower jaw-labial teeth: < 2mm

Lower jaw-backteeth: < 2mm

Middle-distant direction: < 4mm

Vertically to:

The upper jaw-labial teeth: < 2mm

The upper jaw-backteeth: < 2mm

Lower jaw-labial teeth: < 2mm

Lower jaw-backteeth: < 2mm

Other are rescued parameter and can set according to standard value or default value.

And set for producing the quantity rescuing step needed for the first dummy model as 19 steps, i.e. set N=19.

Then, computer will be calculated based on collision in jaw and between jaw according to reference curve determined by above-mentioned with rescue parameter Method carries out arranging tooth process.

Further, by show on computer user interface this 19 step rescue in step each rescue corresponding to step virtual The image of orthodontic state.As required, it is also possible to form the 3-D view simulation of the virtual tooth model of each step Animation is so that the arranging situation of each dental phenomenon rescued formed in step of clinician reviews and upper lower jaw dental articulation Relation etc..

According to rescuing requirement, doctor manually determine or by computer according to standard database according to its clinical practice This first group row's the first dummy model of being generated of tooth process is estimated, to determine the need for again arranging tooth and from the Several steps rise needs again to arrange tooth.

Such as, doctor during determining above-mentioned row's tooth according to its clinical practice, for needing after maxillary teeth the 14th step Rearrange, and labial teeth section dental arch curve should interior be received.

Therefore, the reference curve (target dental arch curve) during row's tooth for the first time is adjusted so that retract anterior teeth Section dental arch curve, thus form the reference curve after adjustment, for second time row's tooth process.

And adjust and rescue parameter used in for the first time row's tooth process, arrange rectifying of tooth process for for the second time to determine Control parameter:

The tooth of needs movement: 17,14,13,12,11,21,22,23,24,25.

The quantity rescuing step during second time row's tooth is 4 steps.

Other rescue parameter constant.

Then, computer by according to the reference curve after above-mentioned adjustment and rescue parameter, is calculated based on collision in jaw and between jaw Method is from 15(i.e. X=15) step starts again to arrange tooth, obtains the dental phenomenon of the 15th to 18 step.

Further, the 1st to 14 step by showing for the first time row's tooth process on computer user interface rescues step and the The 15-18 step of secondary row's tooth process is rescued each virtual tooth rescued corresponding to step in step and is rescued the image of state. As required, it is also possible to form the 3-D view simulation animation of the virtual tooth model of each step so that clinician reviews The arranging situation of each dental phenomenon rescued formed in step and upper lower jaw teeth occluding relation etc..

1st to 14 step of row's tooth process of described first time is rescued the 15-18 step of step and second time row's tooth process and is rectified Control each virtual tooth rescued corresponding to step in step to rescue state and be sequentially connected, obtain the first current dummy model.

According to rescuing requirement, doctor manually determine or by computer according to standard database according to its clinical practice Which the first dummy model that this is current is estimated, to determine the need for again arranging tooth and needing again to arrange from step Tooth.

Repeat above-mentioned flow process, until the first current dummy model disclosure satisfy that and rescues requirement, by current first virtual Model rescues state as desired a series of tooth targets.

Therefore, by the above-mentioned method determining that tooth target rescues state, step can be rescued based on upper one all the time Dental phenomenon sequentially obtains the next one and rescues the dental phenomenon that step is possible, and to be obtained without determining that from the beginning Dental phenomenon, improves the motility rescuing conceptual design.It is additionally, since this method to carry out based on reference curve, greatly Reduce greatly the scope that may rescue path and carry out space search, improve design efficiency；Simultaneously can be according to actual clinical Situation correspondingly adjusts reference curve and rescues parameter, and can select to start to re-search for follow-up from arbitrary step of rescuing Dental phenomenon is rescued the dental phenomenon of target finally to meet, so that obtained, to rescue scheme the most reasonable.

Obtained after a series of tooth target rescues state automatically being arranged tooth by above computer, it is possible to utilize this one The tooth target of series rescues state to process dental appliance.

Fig. 5 shows an exemplary process according to method of the present invention processing invisible orthotic device.Wherein, example (such as Gypsum Fibrosum tooth is made by impression taking as first made physics tooth mould according to the virtual condition of patient teeth in step 501 Mould), more in step 502 this physics tooth mould is scanned, to generate virtual tooth jaw state.Certainly, it is possible to pass through optics Scanning, tri-dimensional photographing, three-dimensional camera shooting or Medical CT scanning directly obtain virtual tooth model.This virtual tooth model can be by Digitized processing and display.

It follows that pass through computer system to virtual tooth model according to method step shown in Fig. 1 the most in step 503 Process, rescue state generating target, so that it is determined that practicality rescue scheme.

Method performed in step 503 can be come at computer with such as computer software, hardware or a combination thereof Computer-readable recording medium realizes.For hardware realizes, embodiment described here can be in special IC (ASIC), numeral Signal processor (DSP), digital signal processing appts (DSPD), PLD (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, be designed to carry out function described here other electronic unit or One or more realizing in the combination of its selectivity of person.

For software realizes, embodiment described here can use single software module, such as process and function Realizing, each of which is carried out one or more function described here and operation.Software code can be with any suitable The software application that programming language is write realizes, and can be stored in memorizer or other meters of special computer system In calculation machine computer-readable recording medium, and performed by the processor of computer system, it is also possible to be arranged on and possess data storage and process In other electronic equipments of function, as with the panel computer of touch screen, Intelligent mobile equipment etc..

In order to realize and correct the interactive operation of the users such as doctor, the computer system of the present invention also includes for user The display device of display information and input equipment so that user can provide input to computer system.Conventional input sets For including mouse, keyboard, touch screen and voice-input device, or other type of user interface input equipment.

Further, described computer system is programmed to provide graphic user interface (GUI) and three-dimensional display interface, in order to Determined the orthodontic state in each group of dummy model by computer system in user, and carry out the setting of parameter.

After determining the scheme of rescuing, can in step 504 corresponding tooth target state data be sent to quickly In former.Here data transmission can be realized by storage devices such as floppy disk, hard disk, CD, memory card, flash memories, Can also connect by wired or wireless network and be sent to rapid forming equipment.In step 505, described rapid forming equipment can The formpiston (positive model) with respective shapes is produced according to this tooth target state data.As an alternative, it is possible to use number Control lathe, generates polymer, metal, pottery or the formpiston of Gypsum Fibrosum material based on described tooth target data.

After forming formpiston, such as in step 506, can be by hot-press forming device, will be by transparent polymeric on this formpiston The appliance diaphragm that thing material is constituted carries out hot-forming.Again through polishing finishing, to obtain the invisible orthotic device (step without bracket Rapid 507).

Appliance manufacture process shown in Fig. 5 is only a kind of exemplary technique, and it can be done by those skilled in the art Go out various change.For example, it is also possible to based on described tooth target state data generate former (negative norm type) data (i.e. tooth rectify Control the data of device), directly generate by three-dimensional printing technology data based on obtained dental appliance and there is respective shapes Invisible orthotic device.

Therefore, first status data can be rescued based on tooth target, by the method for traditional computer digital animation, example Such as the method for computer-aided design (CAD), by offset out from the crown surfaces of each tooth or distance about 0.05mm or Person is more, obtains the inner surface representing the dental appliance that the basic phase of outline rescuing state with this tooth target " is coincide " Digitized data model.Specifically, first, can according to represent tooth target rescue state digitized data model obtain represent The fundamental digital data of the inner surface geometry of appliance cavity, further, determine the thickness of appliance, such as, can set The thickness of appliance is 0.3-0.6 millimeter, but this thickness can be different according to making material and the difference of patient requests.

Further, the data of described dental appliance can be by the source data as three-dimensional printer, by three-dimensional printer profit With polymeric material, directly printed the dental appliance of three-dimensional by the technology successively printed, or according to described tooth mesh The design data marking state of rescuing goes out the formpiston of dental appliance, and by three-dimensional printer, utilizes formpiston material, by successively The technology printed directly prints the formpiston of the dental appliance of three-dimensional, thus is produced the tooth with respective shapes by this formpiston Tooth appliance.

Although being disclosed that various aspects of the invention and embodiment, but other aspects and embodiment are for this area skill Also it is apparent from for art personnel.Various aspects disclosed herein and embodiment are for illustration purposes only, and unrestricted mesh 's.Protection scope of the present invention and purport are only determined by appended claims.

Equally, each chart can illustrate exemplary architecture or other configurations of disclosed method and system, and it helps The feature in disclosed method and system and function is can be included in understanding.Claimed invention is not limited to shown showing Example framework or configuration, and desired feature can realize with various alternative architecture and configuration.In addition, for flow process Figure, functional descriptions and claim to a method, square frame order described herein should not necessarily be limited by be implemented with same order to hold The various embodiments of the described function of row, unless explicitly pointed out within a context.

Unless otherwise expressly stated, term used herein and phrase and variant thereof are interpreted as open, Rather than it is restrictive.In some instances, such as " one or more ", " at least ", " but being not limited to " such autgmentability word Converge and should not be construed as with the appearance of phrase or other similar terms being intended in the example being likely not to have this autgmentability term Or need to represent the situation of constriction.

Claims (26)

1., for obtaining the method that tooth target rescues state, comprise the following steps:

A) obtain the current dental phenomenon of patient or tooth and the state of perienchyma thereof, thus generate tooth or tooth And the underlying virtual model of perienchyma；

B) reference curve is determined based on described underlying virtual model；

C) at least one is provided to rescue parameter；

D) according to described at least one rescue parameter and described reference curve generates the first dummy model, described first dummy model Including first group of state of rescuing rescuing step Tooth, rescue step and include that the first to N step is rescued for wherein said first group Step, wherein N >=1；

E) assess the first current dummy model whether to disclosure satisfy that and rescue requirement, if it is satisfied, then with described first virtual mould Type rescues state as desired tooth target；If be unsatisfactory for, then:

F) rescue from described first group step selects X step rescue step, wherein N >=X >=1；

G) to described reference curve and/or described at least one rescue parameter and be adjusted, and according to after described adjustment extremely Rescuing parameter and/or reference curve generates the second dummy model for few one, described second dummy model includes that second group is rescued step The state of rescuing of rapid Tooth, rescues step and includes that X to M step rescues step for wherein said second group, wherein M >=X；And

H) state of rescuing rescuing step Tooth before being walked by the X in described first dummy model and described second virtual The state of rescuing rescuing step Tooth that X to M in model walks forms the first current dummy model.

2. the method for claim 1, also includes: repeat the above steps e) is to h), until the first current dummy model Disclosure satisfy that and rescue requirement, the first current dummy model is rescued state as desired tooth target.

3. method as claimed in claim 1 or 2, it is characterised in that consider following doctor when assessing whether and meeting and rescue and require One or more in factor: dental arch curve, crowded dentition degree, interproximal amount, covering, laminating, dental arch bulging, Spee bent In line curvature, Bolton index, arch width, dental arch symmetry, tooth twist, tooth shaft rake, tooth torque, denture Line and facial soft tissue profile.

4. method as claimed in claim 1 or 2, it is characterised in that described reference curve is that the two dimension in space coordinates is bent Line or three-dimensional curve.

5. method as claimed in claim 1 or 2, it is characterised in that described reference curve is based on described underlying virtual model Basic dental arch curve and the target dental arch curve that determines.

6. method as claimed in claim 5, it is characterised in that based on described basis dental arch curve, manually regulation or Computer automatic Fitting is to determine described target dental arch curve.

7. method as claimed in claim 5, it is characterised in that described basis dental arch curve is based on described underlying virtual model FA point, abutment points or the curve of Occlusal contact point matching of upper multiple teeth.

8. method as claimed in claim 5, it is characterised in that described basis dental arch curve is based on described underlying virtual model The tongue side dental arch curve of the tongue side clinical crown midpoint matching of upper multiple teeth.

9. method as claimed in claim 1 or 2, it is characterised in that described at least one to rescue parameter be from following parameter group The one or more parameter of middle selection: rescue guiding tooth, needed for producing the first dummy model and/or the second dummy model One group of quantity rescuing step, needs the tooth of movement each rescuing in step, in each movement rescuing step Tooth Direction and amount of movement, and need tooth and the stripping amount of stripping.

10. method as claimed in claim 9, it is characterised in that described in rescue guiding tooth be according to described underlying virtual model One or some the teeth that the anticipated amount of movement determined is maximum.

11. methods as claimed in claim 9, it is characterised in that calculate anchorage to determine according to described underlying virtual model State, each rescuing, step needs the tooth of movement, the moving direction of tooth and amount of movement.

12. methods as claimed in claim 9, it is characterised in that described at least one rescue parameter and farther include following ginseng One or more parameter in array: the degree of freedom restriction scope that tooth is movable, rescues target priority, the time priority of stripping Level, the priority of gap acquisition pattern and scope, the priority of gap disarmed mode and scope, gap reservation mode excellent First order and scope, the adjustment direction of center line and adjustment amount, and maxillomandibular occluding relation.

13. methods as claimed in claim 1 or 2, it is characterised in that described generation the first dummy model and the second dummy model Step include by computer based on described reference curve and at least one rescue parameter, according in jaw collision dodge and touch between jaw Hit dodge algorithm progressively generate a series of rescue step Tooth rescue state.

14. methods as claimed in claim 1 or 2, wherein, according to described at least one to rescue parameter and described reference curve raw The step becoming the first dummy model includes:

I) based on described underlying virtual model, according to described at least one rescue parameter and described reference curve and generate described first Walk the tooth rescued in step rescues state；

Ii) rescue state based on what the described first step rescued tooth in step, according to described at least one rescue parameter and institute That states that reference curve generates that second step rescues tooth in step rescues state；And

Iii) state of rescuing of tooth in walking based on Y, according to described at least one rescue parameter and described reference curve is raw Y+1 step is become to rescue the state of rescuing of the tooth in step, wherein N-1 >=Y >=2, and N >=3.

15. 1 kinds for the method manufacturing dental appliance, it is characterised in that according to according to any one of claim 1 to 14 Method obtain patient tooth target rescue state, this tooth target rescue state and determine the shape of dental appliance, from And produce the dental appliance with respective shapes.

16. methods as claimed in claim 15, it is characterised in that the data that described tooth target rescues state are transferred into tooth Tooth appliance manufactures equipment, and dental appliance manufactures equipment and forms the formpiston of dental appliance according to these data, thus by this sun Molding produces the dental appliance with respective shapes.

17. methods as claimed in claim 16, it is characterised in that described dental appliance manufactures equipment utilization 3 D-printing skill Art, the data rescuing state according to described tooth target form the formpiston of described dental appliance.

18. methods as claimed in claim 15, it is characterised in that determine phase according to the data that described tooth target rescues state The data of the dental appliance answered, and the data of described dental appliance are sent to dental appliance manufacture equipment, tooth is rectified Control device manufacture equipment and directly form dental appliance according to the data of described dental appliance.

19. methods as claimed in claim 18, it is characterised in that described dental appliance manufactures equipment utilization 3 D-printing skill Art, forms described dental appliance according to the data of described dental appliance.

20. methods as according to any one of claim 16 to 19, it is characterised in that described dental appliance is by having elasticity Polymeric material manufacture.

21. methods as claimed in claim 20, it is characterised in that described polymeric material is transparent polymeric material.

22. methods as claimed in claim 21, it is characterised in that described dental appliance manufactures equipment according to described tooth mesh The design data marking state of rescuing goes out the formpiston of dental appliance, and by three-dimensional printer, utilizes the technology successively printed straight Take the formpiston of the dental appliance printing off three-dimensional, thus produced the dental appliance with respective shapes by this formpiston.

23. methods as claimed in claim 21, it is characterised in that described dental appliance manufactures polymer described in equipment utilization Material, the data rescuing state according to described tooth target determine the data of corresponding dental appliance, and according to described tooth The data of appliance pass through three-dimensional printer, utilize the technology successively printed directly to print the dental appliance of three-dimensional.

24. methods as claimed in claim 15, it is characterised in that described dental appliance is by having resilient polymeric material Manufacture.

25. methods as claimed in claim 24, it is characterised in that described polymeric material is transparent polymeric material.

26. 1 kinds of dental appliances, it is characterised in that it is according to the method manufacture according to any one of claim 15 to 25 The dental appliance gone out.