CA2400494C - Model and method for taking a three-dimensional impression of a dental arch region - Google Patents
Model and method for taking a three-dimensional impression of a dental arch region Download PDFInfo
- Publication number
- CA2400494C CA2400494C CA002400494A CA2400494A CA2400494C CA 2400494 C CA2400494 C CA 2400494C CA 002400494 A CA002400494 A CA 002400494A CA 2400494 A CA2400494 A CA 2400494A CA 2400494 C CA2400494 C CA 2400494C
- Authority
- CA
- Canada
- Prior art keywords
- shape
- casting
- prosthesis
- arch
- impression
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/002—Means or methods for correctly replacing a dental model, e.g. dowel pins; Dowel pin positioning means or methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
-
- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
- G16H20/40—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
Abstract
The invention concerns a model comprising a mould (2) of the arch concerned, mounted on a base (5), the portion of the mould which is to receive the prosthesis being dissociated from the rest of the mould and mounted removable and capable of being accurately repositioned on the base via pins. Each tooth impression or each region of the arch containing a tooth impression, adjacent to one of the ends of the portion (3) which is to receive the prosthesis is also dissociated (6, 8, 9) from the portion (3) of the mould which is to receive the prosthesis and from the adjacent region pertaining to the rest of the mould, and is mounted removable and capable of being accurately repositioned via pins.
Description
MODEL AND METHOD FOR TAKING A THREE-DIMENSIONAL
IMPRESSION OF A DENTAL ARCH REGION
The present invention relates to a model for taking tridimensional impression of a dental arch area that is intended to receive a dental prosthesis. More specifically, the invention concerns a model allowing to take a tridimensional impression that is thereafter digitized in view of providing by calculation a determination of the shape of a prosthesis, and then to machine this prosthesis by means of a digitally controlled machining tool.
To produce a dental prosthesis, such as a crown or a bridge, the dental surgeon begins by preparing the tooth or teeth that will act as support for the prosthesis, shaping these teeth and shaping what is called a stump or stumps.
By means of a supple material, an impression of the entire jaw under consideration is then taken, or of only part of the arch of that jaw containing the area in which the prosthesis is intended to be implanted. One also proceeds to take an impression by means of a supple material, and eventually, by proceeding to a check-bite, of the other jaw or an arch area of the other jaw, that is directly opposed to the area intended to receive the prosthesis. From these castings made with supple materials, a dental technician produces a model that reproduces the gum, the teeth and the stumps prepared, by casting a plaster-based material in the impressions previously obtained. A stand is cast using a plaster-based material. Pegs that are included in the casting and that protrude therefrom, penetrate into the stand. These pegs are treated in a manner to be allowed to be removed and put back into place in the stand.
The dental technician then cuts out the area intended to receive the prosthesis, that includes a stump in the case of a crown, or two stumps that are separated by a cavity in the case of a bridge. This separation is made by sawing the base of the casting, substantially transversally to the arch.
In the traditional technique for producing a prosthesis, the dental technician removes the portion of the casting that is intended to receive the prosthesis, and builds a prosthesis on that portion. As the construction advances, he can reposition this portion of the casting on the model, in order to verify if the prosthesis construction corresponds to the representations of the neighboring teeth, as well as with the adjacent teeth when he positions the models of the two jaws opposite one another.
In the case of the production of a prosthesis using a tridimensional shape acquisition by means of a mechanical sensor, or an optical sensor, in order to treat the acquisition obtained to build the prosthesis via calculations before proceeding to its machining, one is faced with the problem of taking an impression in areas that are not easily mechanically or optically accessible, for example in areas located between the teeth. This is why it may be difficult to obtain a shape acquisition of the outer faces of the teeth that are oriented toward the stump side, or the shape of certain areas of the stump or of the adjacent teeth, whose position cannot be reached with an optical system.
The goal of the invention is to provide a model for taking a tridimensional impression of an area of a dental arch, as well as a method of using this model, thereby ensuring complete accessibility to all faces of a casting in the area that is intended to receive a prosthesis, without requiring additional work on the part of the prosthesis laboratory, while providing a technique that is perfectly mastered by prosthesis laboratories.
To this end, the model concerned by the invention, comprising a casting of the arch under consideration, mounted on a stand, the portion of the casting intended to receive the prosthesis being separate from the rest of the casting and being precisely mounted in a removable and repositionable way on the stand by means of pegs, is characterized in that each tooth impression or each arch area containing a tooth impression adjacent to one of the extremities of the portion intended to receive the prosthesis is also separate, on the one hand from the portion of the casting that is intended to receive the prosthesis, and on the other hand, from the adjacent area of the remaining portion of the casting, and that the impression is precisely mounted in a removable and repositionable way on the stand by means of pegs.
According to a simple embodiment, separation of the portion of the casting intended to receive the prosthesis and of the adjacent portions of the casting from the rest of the casting is carried out by sawing, substantially perpendicularly to the arch, a base that is unitary with the casting and rests on the stand, without adhering to it.
IMPRESSION OF A DENTAL ARCH REGION
The present invention relates to a model for taking tridimensional impression of a dental arch area that is intended to receive a dental prosthesis. More specifically, the invention concerns a model allowing to take a tridimensional impression that is thereafter digitized in view of providing by calculation a determination of the shape of a prosthesis, and then to machine this prosthesis by means of a digitally controlled machining tool.
To produce a dental prosthesis, such as a crown or a bridge, the dental surgeon begins by preparing the tooth or teeth that will act as support for the prosthesis, shaping these teeth and shaping what is called a stump or stumps.
By means of a supple material, an impression of the entire jaw under consideration is then taken, or of only part of the arch of that jaw containing the area in which the prosthesis is intended to be implanted. One also proceeds to take an impression by means of a supple material, and eventually, by proceeding to a check-bite, of the other jaw or an arch area of the other jaw, that is directly opposed to the area intended to receive the prosthesis. From these castings made with supple materials, a dental technician produces a model that reproduces the gum, the teeth and the stumps prepared, by casting a plaster-based material in the impressions previously obtained. A stand is cast using a plaster-based material. Pegs that are included in the casting and that protrude therefrom, penetrate into the stand. These pegs are treated in a manner to be allowed to be removed and put back into place in the stand.
The dental technician then cuts out the area intended to receive the prosthesis, that includes a stump in the case of a crown, or two stumps that are separated by a cavity in the case of a bridge. This separation is made by sawing the base of the casting, substantially transversally to the arch.
In the traditional technique for producing a prosthesis, the dental technician removes the portion of the casting that is intended to receive the prosthesis, and builds a prosthesis on that portion. As the construction advances, he can reposition this portion of the casting on the model, in order to verify if the prosthesis construction corresponds to the representations of the neighboring teeth, as well as with the adjacent teeth when he positions the models of the two jaws opposite one another.
In the case of the production of a prosthesis using a tridimensional shape acquisition by means of a mechanical sensor, or an optical sensor, in order to treat the acquisition obtained to build the prosthesis via calculations before proceeding to its machining, one is faced with the problem of taking an impression in areas that are not easily mechanically or optically accessible, for example in areas located between the teeth. This is why it may be difficult to obtain a shape acquisition of the outer faces of the teeth that are oriented toward the stump side, or the shape of certain areas of the stump or of the adjacent teeth, whose position cannot be reached with an optical system.
The goal of the invention is to provide a model for taking a tridimensional impression of an area of a dental arch, as well as a method of using this model, thereby ensuring complete accessibility to all faces of a casting in the area that is intended to receive a prosthesis, without requiring additional work on the part of the prosthesis laboratory, while providing a technique that is perfectly mastered by prosthesis laboratories.
To this end, the model concerned by the invention, comprising a casting of the arch under consideration, mounted on a stand, the portion of the casting intended to receive the prosthesis being separate from the rest of the casting and being precisely mounted in a removable and repositionable way on the stand by means of pegs, is characterized in that each tooth impression or each arch area containing a tooth impression adjacent to one of the extremities of the portion intended to receive the prosthesis is also separate, on the one hand from the portion of the casting that is intended to receive the prosthesis, and on the other hand, from the adjacent area of the remaining portion of the casting, and that the impression is precisely mounted in a removable and repositionable way on the stand by means of pegs.
According to a simple embodiment, separation of the portion of the casting intended to receive the prosthesis and of the adjacent portions of the casting from the rest of the casting is carried out by sawing, substantially perpendicularly to the arch, a base that is unitary with the casting and rests on the stand, without adhering to it.
This model is the one that is used to take a tridimensional impression either by means of a mechanical sensor, or by means of an optical sensor.
The measured results are digitized before undergoing a treatment allowing the contour of the prosthesis to be defined.
A process for taking a tridimensional impression of an arch area using this model consists in:
- positioning the complete model opposite the device for acquisition of the shape of the arch area intended to receive the prosthesis, - identifying the sites whose shape acquisition is difficult or impossible to carry out as is, - according to the previous identification, effecting a withdrawal of the parts of the casting that are adjacent to the area that is intended to receive the prosthesis before carrying a shape acquisition of that area, and/or effecting a withdrawal of the portion of the casting intended to receive the prosthesis, before carrying out a shape acquisition of at least one of the portions of the casting adjacent to that area, - and rebuilding the shape of the arch area whose shape is to be obtained, from the various shape acquisitions that were carried out.
The user starts by positioning the arch of which he wishes to acquire the shape in the measuring system, in the implantation area of the prosthesis.
One then proceeds to an analysis of the difficulties of accessibility in the different areas whose shape must be acquired.
According to a possibility, the process according to the invention consists in making a first acquisition of the totality of the arch area whose shape has to be obtained, in order to identify the sites where a shape acquisition is difficult or impossible to obtain as is.
In fact, an analysis of the difficulties of accessibility may be carried out in different ways: by the user who knows the limits of the impression-taking system, via the impression-taking system through an automatic detection device, such as a two dimension video or fast pre-measurement in three dimensions, or by the user with the aid of analysis means incorporated in the impression taking system.
At the end of this analysis phase, the areas which are not accessible are identified.
The process thereafter consists in determining the strategy for successive shape acquisitions, i.e. the order in which the different parts of the casting will be dismantled and the different impression-taking will be carried out.
The strategy may be defined in different ways:
- by the user who knows the limits of the impression-taking system, - by the impression-taking system through a suitable algorithm, - or by the user with the aid of simulation means incorporated in the impression-taking system.
One then proceeds to the impression-taking per se by applying the strategy that has been defined, i.e. by dismantling the portions of the arch that generate an inaccessibility of the neighboring portions and measurement of the portions thus made accessible. One thereafter put back into place the previously dismantled portions by applying the same principle until obtaining a complete measurement.
For this purpose, the process according to the invention, consists in guiding the impression-taking device in order that the latter:
- informs the user that a dismantling and/or a reassembling of a portion of the arch is expected, - defers an impression-taking to allow for the dismantling of a portion of the arch, - takes another measurement after dismantling, and - reconstitutes the shape of the arch area whose shape is to be obtained, from the different shape acquisitions that were carried out.
In any case, the invention will be well understood by way of the following description, with reference to the annexed schematic drawing that represents, in view from above, a form of execution of this model:
Figure 1 is a view from above of a model made of plaster corresponding to a portion of a jaw;
Figure 2 is a perspective view including an identification of the area whose optical acquisition has to be carried out;
The measured results are digitized before undergoing a treatment allowing the contour of the prosthesis to be defined.
A process for taking a tridimensional impression of an arch area using this model consists in:
- positioning the complete model opposite the device for acquisition of the shape of the arch area intended to receive the prosthesis, - identifying the sites whose shape acquisition is difficult or impossible to carry out as is, - according to the previous identification, effecting a withdrawal of the parts of the casting that are adjacent to the area that is intended to receive the prosthesis before carrying a shape acquisition of that area, and/or effecting a withdrawal of the portion of the casting intended to receive the prosthesis, before carrying out a shape acquisition of at least one of the portions of the casting adjacent to that area, - and rebuilding the shape of the arch area whose shape is to be obtained, from the various shape acquisitions that were carried out.
The user starts by positioning the arch of which he wishes to acquire the shape in the measuring system, in the implantation area of the prosthesis.
One then proceeds to an analysis of the difficulties of accessibility in the different areas whose shape must be acquired.
According to a possibility, the process according to the invention consists in making a first acquisition of the totality of the arch area whose shape has to be obtained, in order to identify the sites where a shape acquisition is difficult or impossible to obtain as is.
In fact, an analysis of the difficulties of accessibility may be carried out in different ways: by the user who knows the limits of the impression-taking system, via the impression-taking system through an automatic detection device, such as a two dimension video or fast pre-measurement in three dimensions, or by the user with the aid of analysis means incorporated in the impression taking system.
At the end of this analysis phase, the areas which are not accessible are identified.
The process thereafter consists in determining the strategy for successive shape acquisitions, i.e. the order in which the different parts of the casting will be dismantled and the different impression-taking will be carried out.
The strategy may be defined in different ways:
- by the user who knows the limits of the impression-taking system, - by the impression-taking system through a suitable algorithm, - or by the user with the aid of simulation means incorporated in the impression-taking system.
One then proceeds to the impression-taking per se by applying the strategy that has been defined, i.e. by dismantling the portions of the arch that generate an inaccessibility of the neighboring portions and measurement of the portions thus made accessible. One thereafter put back into place the previously dismantled portions by applying the same principle until obtaining a complete measurement.
For this purpose, the process according to the invention, consists in guiding the impression-taking device in order that the latter:
- informs the user that a dismantling and/or a reassembling of a portion of the arch is expected, - defers an impression-taking to allow for the dismantling of a portion of the arch, - takes another measurement after dismantling, and - reconstitutes the shape of the arch area whose shape is to be obtained, from the different shape acquisitions that were carried out.
In any case, the invention will be well understood by way of the following description, with reference to the annexed schematic drawing that represents, in view from above, a form of execution of this model:
Figure 1 is a view from above of a model made of plaster corresponding to a portion of a jaw;
Figure 2 is a perspective view including an identification of the area whose optical acquisition has to be carried out;
5 Figures 3 and 4 are two perspective views respectively during two phases of tridimensional shape acquisition.
Figure 1 represents a model of a portion of a jaw, comprising a casting of plaster 2 of a certain number of teeth, including a stump 3 intended to receive a crown. The casting of plaster comprises a base plate 4, that rests on a stand 5. As shown in the drawing, the casting portion including stump 3 is separated from the adjacent portions by means of two slits 6 that are substantially transversal to the arch formed by the jaw. Since base plate 4 does not adhere to stand 5, it is possible to remove the portion including stump 3, as it is shown in figure 4, this portion being adapted for being precisely repositioned by means of studs not illustrated in the drawing, the studs being engaged in two holes 7 provided in the stand. Cuts, respectively 8 and 9, are provided, on the one hand, on the other side of the tooth that is adjacent to stump 3, and is located on the rear side of the jaw and, on the other hand, at the other end of a group of three teeth located on the front side of the jaw. The portions delimited by slits 6, 8, on the one hand, and 6 and 9, on the other hand may be independently removed from one another and precisely repositioned by means of a system of stud, as it is the case for the casting portion that includes stump 3.
By analyzing figure 2, it may be realized that the areas between the stump and the two adjacent teeth are very narrow, so that it is difficult, and even impossible, to achieve a correct impression-taking of the faces of the stump that are oriented toward the two adjacent teeth, as well as of the faces of the adjacent teeth that are oriented toward the stump.
One first proceeds to the identification of the area whose impression-taking must be carried out. This area, identified by reference numeral 10, is delimited by chain dotted lines in figure 2. As shown in figure 3, one first proceeds to the dismantling of the two groups of teeth located on both sides of stump 3, for the purpose of proceeding to an acquisition of the shape of the stump, that is now perfectly accessible. The two groups of teeth that are adjacent to the stump are put back into place, after which one proceeds to remove the stump, as shown in figure 4. One then proceeds to take a measurement of the adjacent teeth and of the stand, after which one proceeds by calculation to an algorithmic rebuilding of a complete shape acquisition of area 10, while removing the stand.
Once this acquisition is complete, it is possible to proceed to a determination of the shape of the prosthesis, that is intended to be mounted on stump 3.
As it will appear from what has just been described, the invention brings about an important improvement to the existing technique by providing a model of simple structure and that can be used by means of a process that is also simple, allowing a tridimensional acquisition of all the portions of the model intended to receive a prosthesis. The use of this model and of the corresponding process are carried out by bearing in mind the known rules of the art in the field of dental prosthesis.
Obviously, the invention is not limited to the single embodiment of this model, described above by way of example; on the contrary it embodies all the variants. Thus, for example this model could be used for building bridges, or still the different portions of the model could be precisely positioned, not by using studs but rather with other means, without by doing so departing from the scope of the invention.
Figure 1 represents a model of a portion of a jaw, comprising a casting of plaster 2 of a certain number of teeth, including a stump 3 intended to receive a crown. The casting of plaster comprises a base plate 4, that rests on a stand 5. As shown in the drawing, the casting portion including stump 3 is separated from the adjacent portions by means of two slits 6 that are substantially transversal to the arch formed by the jaw. Since base plate 4 does not adhere to stand 5, it is possible to remove the portion including stump 3, as it is shown in figure 4, this portion being adapted for being precisely repositioned by means of studs not illustrated in the drawing, the studs being engaged in two holes 7 provided in the stand. Cuts, respectively 8 and 9, are provided, on the one hand, on the other side of the tooth that is adjacent to stump 3, and is located on the rear side of the jaw and, on the other hand, at the other end of a group of three teeth located on the front side of the jaw. The portions delimited by slits 6, 8, on the one hand, and 6 and 9, on the other hand may be independently removed from one another and precisely repositioned by means of a system of stud, as it is the case for the casting portion that includes stump 3.
By analyzing figure 2, it may be realized that the areas between the stump and the two adjacent teeth are very narrow, so that it is difficult, and even impossible, to achieve a correct impression-taking of the faces of the stump that are oriented toward the two adjacent teeth, as well as of the faces of the adjacent teeth that are oriented toward the stump.
One first proceeds to the identification of the area whose impression-taking must be carried out. This area, identified by reference numeral 10, is delimited by chain dotted lines in figure 2. As shown in figure 3, one first proceeds to the dismantling of the two groups of teeth located on both sides of stump 3, for the purpose of proceeding to an acquisition of the shape of the stump, that is now perfectly accessible. The two groups of teeth that are adjacent to the stump are put back into place, after which one proceeds to remove the stump, as shown in figure 4. One then proceeds to take a measurement of the adjacent teeth and of the stand, after which one proceeds by calculation to an algorithmic rebuilding of a complete shape acquisition of area 10, while removing the stand.
Once this acquisition is complete, it is possible to proceed to a determination of the shape of the prosthesis, that is intended to be mounted on stump 3.
As it will appear from what has just been described, the invention brings about an important improvement to the existing technique by providing a model of simple structure and that can be used by means of a process that is also simple, allowing a tridimensional acquisition of all the portions of the model intended to receive a prosthesis. The use of this model and of the corresponding process are carried out by bearing in mind the known rules of the art in the field of dental prosthesis.
Obviously, the invention is not limited to the single embodiment of this model, described above by way of example; on the contrary it embodies all the variants. Thus, for example this model could be used for building bridges, or still the different portions of the model could be precisely positioned, not by using studs but rather with other means, without by doing so departing from the scope of the invention.
Claims (5)
1. Process for three-dimensional impression-taking of an arch area, characterized in that it consists in:
providing a casting of at least the arch area intended to receive a prosthesis, the casting mounted on a stand, positioning the casting opposite a device for acquisition of a shape of the arch area intended to receive the prosthesis, identifying sites whose shape acquisition is difficult or impossible to carry out as is, effecting, according to said identifying, a removal of portions of the casting such that said sites are visible by said device for acquisition;
carrying out at least one shape acquisition of said casting on said stand after said removal; and restoring the shape of the arch area whose shape must be obtained, from the different shape acquisitions that were carried out.
providing a casting of at least the arch area intended to receive a prosthesis, the casting mounted on a stand, positioning the casting opposite a device for acquisition of a shape of the arch area intended to receive the prosthesis, identifying sites whose shape acquisition is difficult or impossible to carry out as is, effecting, according to said identifying, a removal of portions of the casting such that said sites are visible by said device for acquisition;
carrying out at least one shape acquisition of said casting on said stand after said removal; and restoring the shape of the arch area whose shape must be obtained, from the different shape acquisitions that were carried out.
2. Process according to claim 1, characterized in that it consists in effecting a first acquisition of the entire area of the arch whose shape must be obtained, in order to identify sites whose shape acquisition is difficult or impossible to effect as is.
3. Process according to claim 2, characterized in that it then consists in determining a strategy of successive shape acquisitions, including an order m which different portions of the casting will be dismantled and in which different impression-taking will take place.
4. Process according to any one of claims 1 to 3, characterized in that it consists in guiding an impression-taking device in order that the latter:
informs the user that at least one of a dismantling and a rebuilding of a portion of the arch are expected;
delays an impression-taking to allow for a dismantling of an arch portion;
take over the measurement after dismantling; and restore the shape of the arch area whose shape must be obtained, from the different shape acquisitions that were carried out.
informs the user that at least one of a dismantling and a rebuilding of a portion of the arch are expected;
delays an impression-taking to allow for a dismantling of an arch portion;
take over the measurement after dismantling; and restore the shape of the arch area whose shape must be obtained, from the different shape acquisitions that were carried out.
5. Process according to claims 1, characterized in that said effecting a removal of portions of the casting comprises removing portions that are adjacent to the area intended to receive the prosthesis.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0002423A FR2805452B1 (en) | 2000-02-25 | 2000-02-25 | MODEL FOR THE THREE-DIMENSIONAL IMPRESSION OF A DENTAL ARCH AREA FOR RECEIVING A PROSTHESIS, AND METHOD FOR THE IMPLEMENTATION OF THIS MODEL |
| FR00/02423 | 2000-02-25 | ||
| PCT/FR2001/000555 WO2001064128A1 (en) | 2000-02-25 | 2001-02-26 | Model and method for taking a three-dimensional impression of a dental arch region |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2400494A1 CA2400494A1 (en) | 2001-09-07 |
| CA2400494C true CA2400494C (en) | 2009-12-15 |
Family
ID=8847430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002400494A Expired - Fee Related CA2400494C (en) | 2000-02-25 | 2001-02-26 | Model and method for taking a three-dimensional impression of a dental arch region |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6887078B2 (en) |
| EP (1) | EP1294303B1 (en) |
| AT (1) | ATE372742T1 (en) |
| AU (1) | AU2001240737A1 (en) |
| CA (1) | CA2400494C (en) |
| DE (1) | DE60130453T2 (en) |
| FR (1) | FR2805452B1 (en) |
| WO (1) | WO2001064128A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK2465464T3 (en) * | 2002-10-03 | 2018-11-19 | Align Technology Inc | Procedure for preparing a physical model |
| DE10357699A1 (en) * | 2003-12-09 | 2005-07-28 | Degudent Gmbh | Method for determining the shape of a residual tooth area |
| US20060154211A1 (en) * | 2005-01-12 | 2006-07-13 | Bybee Larry W | Prefabricated pediatric crowns and method of producing prefabricated pediatric crowns |
| US20080261165A1 (en) * | 2006-11-28 | 2008-10-23 | Bob Steingart | Systems for haptic design of dental restorations |
| CA2713122A1 (en) | 2008-01-23 | 2009-07-30 | Sensable Technologies, Inc. | Haptically enabled dental modeling system |
| US20100291505A1 (en) * | 2009-01-23 | 2010-11-18 | Curt Rawley | Haptically Enabled Coterminous Production of Prosthetics and Patient Preparations in Medical and Dental Applications |
| EP2538868A1 (en) * | 2010-02-25 | 2013-01-02 | Aproxi ApS | A dental model |
| US8905757B2 (en) | 2012-12-03 | 2014-12-09 | E. Kats Enterprises Ltd. | Method and apparatus for measuring a location and orientation of a plurality of implants |
| US9943991B2 (en) * | 2014-05-21 | 2018-04-17 | Align Technology, Inc. | Mold with separable features |
| US9943386B2 (en) * | 2014-05-21 | 2018-04-17 | Align Technology, Inc. | Mold with weakened areas |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK121568B (en) | 1970-05-27 | 1971-11-01 | G Lystager | Method for manufacturing working model of tooth and jaw portions. |
| US4363625A (en) * | 1980-08-29 | 1982-12-14 | Der Avanessian Mesrop | Dental technicians tool and tool retainer |
| US4767331A (en) * | 1987-05-28 | 1988-08-30 | Hoe Khin A | Dental crown manufacturing apparatus |
| US5466152A (en) * | 1993-11-02 | 1995-11-14 | Accu Bite Dental Supply Company | Method for creating a dental model |
| SE503498C2 (en) * | 1994-10-04 | 1996-06-24 | Nobelpharma Ab | Method and device for a product intended to be part of the human body and a scanning device for a model for the product |
| DE19722989C1 (en) * | 1997-05-25 | 1999-02-25 | Rainer Dr Hahn | Mold for making a tooth model |
| DK0913130T3 (en) * | 1997-10-31 | 2003-06-16 | Dcs Forschungs & Entwicklungs | Method and apparatus for making a tooth replacement part |
-
2000
- 2000-02-25 FR FR0002423A patent/FR2805452B1/en not_active Expired - Fee Related
-
2001
- 2001-02-26 DE DE60130453T patent/DE60130453T2/en not_active Expired - Lifetime
- 2001-02-26 AT AT01911807T patent/ATE372742T1/en not_active IP Right Cessation
- 2001-02-26 AU AU2001240737A patent/AU2001240737A1/en not_active Abandoned
- 2001-02-26 EP EP01911807A patent/EP1294303B1/en not_active Expired - Lifetime
- 2001-02-26 WO PCT/FR2001/000555 patent/WO2001064128A1/en active IP Right Grant
- 2001-02-26 CA CA002400494A patent/CA2400494C/en not_active Expired - Fee Related
- 2001-02-26 US US10/203,646 patent/US6887078B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2400494A1 (en) | 2001-09-07 |
| WO2001064128A1 (en) | 2001-09-07 |
| DE60130453T2 (en) | 2008-06-19 |
| US6887078B2 (en) | 2005-05-03 |
| ATE372742T1 (en) | 2007-09-15 |
| AU2001240737A1 (en) | 2001-09-12 |
| DE60130453D1 (en) | 2007-10-25 |
| US20030124492A1 (en) | 2003-07-03 |
| EP1294303A1 (en) | 2003-03-26 |
| FR2805452A1 (en) | 2001-08-31 |
| EP1294303B1 (en) | 2007-09-12 |
| FR2805452B1 (en) | 2003-05-30 |
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