WO2003045269A1

WO2003045269A1 - Process for forming denture, denture mold tray for dental use and set of denture mold tray for dental use with articulator

Info

Publication number: WO2003045269A1
Application number: PCT/JP2002/012296
Authority: WO
Inventors: Hiroshi Sugiya; Taichi Yoshida
Original assignee: Nihon University
Priority date: 2001-11-27
Filing date: 2002-11-26
Publication date: 2003-06-05
Also published as: JP4093452B2; JP2003159261A; AU2002349718A1

Abstract

In forming a denture, the hardening time of plaster is shortened, in particular, the hardening time during stay of a patient in a clinic is lost, thereby producing the denture within a short period of time. In the step (S51) of taking a jaw impression, an impression material is put on one face of a denture mold tray for dental use and the gingival shape is transferred thereto, thus giving a jaw impression. In the step (S53) of forming an occlusion rim, wax is put on the other face of the denture mold tray. In the step (S55) of setting an articulator, the denture mold tray is set to the articulator while holding the jaw impression and the occlusion rim. In the step (S57) of planting artificial teeth, the artificial teeth are successively planted into the occlusion rim while setting the denture mold tray holding the jaw impression and the occlusion rim to the articulator as such. Then the occlusion between the maxillary artificial teeth and the mandibular artificial teeth is appropriately controlled successively with the use of the articulator.

Description

Description Denture manufacturing method, dental tooth tray and set of dental tooth tray and articulator

The present invention relates to a denture manufacturing method, a dental tooth tray, and a set of a dental tooth tray and an articulator. Background art

To make dentures, it is necessary to collect jaw imprints that transfer the shape of the gingiva of the patient on which the dentures will be installed, and adjust the occlusion between the upper and lower artificial teeth. The conventional technology often used the gypsum technology in the method for manufacturing such dentures. A method of manufacturing a denture according to the conventional technique will be described with reference to FIGS. 13 to 20 according to the flowchart of FIG.

S1 is a step of transferring the shape of the patient's gingival part to which dentures are to be transferred to the impression material in the jaw impression collecting step. In Fig. 13, soft alginate (material name) as impression material 3A is applied to dental tooth mold tray 1A to an appropriate thickness. The alginate is pressed against the gingiva in the patient's mouth to transfer the gingival shape 5A. Alginate is a commonly used material for dentistry that can be dissolved in water to form a soft gel. Alginate is mainly used as the impression material, but silicon, gypsum, and compounds are sometimes used. The dental mold tray has an outer shape with a handle attached to a thin metal plate or wire mesh made of aluminum or the like, which is bent into a shape close to the shape of a jaw in an oral cavity.

S3 is a gypsum plastering step in which gypsum is plastered on the portion of the impression material onto which the shape of the gingival part has been transferred and solidified. In FIG. 14, gypsum 7A is placed on impression material 3A to which gingival shape 5A has been transferred. It takes about 30 minutes for the gypsum to harden.

S5 is a jaw model forming process, in which after the gypsum is sufficiently hardened in S3, the gypsum portion is removed from the impression material and the shape of the gingival portion retransferred to the gypsum portion is used as a jaw model. It is. At this stage, the dental tooth tray 1A and the impression material 3A part play a role, and the dental tooth tray 1A has the impression material 3A part removed and reused.

S7 is a wax embankment formation process, in which the wax is laid along a gingival part on a plaster jaw model like a bank. In Fig. 15, a wax embankment 9A is placed on the gingival shape 5A of the jaw model of the plaster 7A already separated from the dental tooth tray. For the mouth, dental paraffin wax can be used. In addition, a thin dental resin can be applied between the gingival shape 5A and the wax embankment 9A, and this can be used as a resin bed.

S9 is a plaster base shaping process and a preparation process for the next process. In other words, in the next process, the outer shape of the gypsum model with the wax embankment is cut and shaped into a slightly smaller outer shape than the articulator attachment so that the jaw model with the wax embankment can be easily attached to the articulator.

S11 is an articulator mounting step in which the jaw model of the plaster with wax embankment shaped in the previous step is fixed and mounted on the articulator. Gypsum is used for the fixation, and a gypsum model of gypsum with a wax embankment is placed at the attachment part of the articulator, and the gap is filled with gypsum and fixed. It takes about 30 minutes to fix. In Fig. 16, the jaw model of gypsum with wax embankment 7 A shaped in the previous process was placed on the articulator mounting part 11 A on the opposite side of the mouth and embankment 9 A, and the gap 13 A was created. Fill with plaster and fix.

The steps from S1 to S11 have been described for the upper jaw, but the same steps are performed for the lower jaw. The process using gypsum is also performed for the plastering process of S3, the plaster base shaping process of S9, and the articulator mounting process of S11.

At S13, in the artificial tooth implantation process, a jaw model of gypsum with wax embankment for the upper jaw and a jaw model of gypsum with wax embankment for the lower jaw were attached to the articulator, and the bite position of the patient was measured separately. Then, adjust the height of the upper and lower jaw wax embankments in accordance with the bite position, and adjust the height of the embankment. Artificial teeth are implanted using an articulator, and adjustment is performed so that the artificial teeth for the upper jaw and the artificial teeth for the lower jaw are properly engaged.

In Fig. 17, a jaw model of maxillary plaster 7A with wax embankment 9A is attached to the upper jaw attachment part 11A of the articulator, and artificial teeth 15A for maxilla are implanted. Similarly, a lower jaw plaster with wax embankment 9 B Ί B jaw model was attached to the lower jaw attachment part 1 1 B of the articulator. Then, artificial teeth 15 B for lower jaw are implanted. The structure of the articulator is such that, in addition to the positional relationship for observing the occlusal state, the upper jaw mounting portion 11A is rotated by approximately 180 degrees with respect to the lower jaw mounting portion 11B. it can. Therefore, when the artificial teeth 15A for the upper jaw and the artificial teeth 15B for the lower jaw are not properly engaged, it is easy to work with the artificial teeth in the state of this 180 ° rotated positional relationship. Then, the wax embankment at the artificial tooth is softened by heat and returned to the positional relationship for observing the occlusal state again, and the occlusion is confirmed. By performing this operation sequentially, it is possible to adjust for proper occlusion. In addition, in the drawings of FIG. 17 and subsequent drawings, the case of four artificial teeth is shown for convenience of description, but the following steps are similarly performed in the case of implanting other artificial teeth.

S 15 is a gypsum embedding process, in which a gypsum jaw model including an artificial toothed wax embankment adjusted to appropriate occlusion is removed from the articulator, placed in a container, and the surrounding area is embedded with gypsum It is a process that is performed. This process is performed separately for the upper jaw model and the lower jaw model. In Fig. 18, a jaw model of gypsum 7A including wax embankment 9A with artificial teeth for upper jaw 15A is placed in container 17A, and the lower half is filled with gypsum 19A first. . The upper half is then filled with gypsum 21A. A mold release material is applied in advance around the jaw model of the gypsum 7 A including the interface 23 A between the gypsum 19 A and the gypsum 21 A and the wax embankment 9 A with artificial teeth 15 A for the upper jaw.

S17 is a wax removing step in which the entire vessel is heated to an appropriate temperature to dissolve the wax and flow out of the vessel to remove the wax. Figure 19 shows the wax embankment after it has flowed out. A hollow part 25A is formed, which is bordered by the gingival shape 5A, corresponding to the wax embankment part that flowed out. The artificial tooth 15 A is kept embedded in the gypsum 21 A.

S19 is a resin gingival part forming process, in which the hollow resin part 25A is filled with dental resin and after curing, the gypsum 19A and gypsum 21A are removed from the container 17A, and the boundary surface 2 Divide by 3 A and take out the dental resin filled in the cavity. At this time, the artificial teeth are fixed by the dental resin, and the dental resin has a gingival portion on the side opposite to the artificial teeth, and dentures are formed as a whole. After that, necessary dentures are applied to complete the dentures. FIG. 20 shows the completed denture 29A for the upper jaw of the dental resin bed 27A having the artificial teeth 15A and the gingival part shape 5A obtained in this way. Similarly, lower jaw dentures can be obtained by performing steps S15 to S20.

With the prior art, dentures can be manufactured. However, the prior art makes heavy use of gypsum technology and takes a long time to manufacture dentures due to the setting time of the gypsum. Analyzing the time required to manufacture dentures, it takes a long time to set the gypsum after adjusting the bite of the artificial tooth. In particular, patients are required to go to the articulator until a gypsum jaw model with wax embankment is attached to the articulator, during which time there is a wait for the plaster to set.

An object of the present invention is to solve the problems of the prior art and reduce the setting time of the gypsum in the production of dentures, and especially eliminate the setting time of the gypsum during the patient visit, and shorten the production of dentures. An object of the present invention is to provide a denture manufacturing method, a dental tooth tray, and a set of a dental tooth tray and an articulator which can be performed by the method. Disclosure of the invention

In order to achieve the above object, a method for manufacturing a denture according to the present invention includes the steps of: using a set of a dental tooth mold tray for implanting artificial teeth and an articulator for adjusting the occlusion of the implanted artificial teeth. A method of manufacturing a denture, comprising: transferring a shape of a gingival part of a patient to which dentures are to be transferred to a transfer member provided on one surface of the dental tooth tray, and collecting a jaw impression; A wax ridge forming step of providing a wax ridge on the other surface of the dental tooth tray; a dental tooth tray mounting step of mounting the dental tooth tray to the articulator; An artificial tooth is implanted on the levee and an artificial tooth is implanted to adjust the occlusion.The dental tooth mold tray that holds the jaw impression and the occlusally adjusted artificial tooth is manufactured based on a dental tooth tray. Features.

Further, the dental tooth tray according to the present invention is a dental tooth tray that is mounted on an articulator for adjusting the occlusion of an artificial tooth and is used for manufacturing dentures, and is a gingiva of a patient to which dentures are mounted. A surface on one side for holding a jaw impression member to which the shape of the part has been transferred, and a surface on the other side for holding a wax embankment on which at least one wax embankment fixing wedge is provided and for artificial teeth to be implanted; A plurality of mounting members which are provided corresponding to the tray mounting portion for mounting the dental tooth tray of the vessel, and which are mounted on the tray mounting portion; It is used for producing dentures based on a jaw impression member and an artificial tooth that has been adjusted for occlusion.

In addition, the dental tooth mold tray and the articulator set according to the present invention include a dental tooth mold tray on which artificial teeth are implanted, and a dental tooth mold tray mounted thereon. A set of articulators to be adjusted, wherein the dental tooth tray includes a surface on one side for holding a jaw impression member in which the shape of a patient's gingiva is transferred, and at least one embankment. A fixed wedge is provided, and is provided corresponding to a surface on the other side for holding a wax embankment for implanting artificial teeth, and a tray mounting portion for mounting a dental tooth-type tray of the articulator. A plurality of mounting-compatible members to be mounted; and a tooth-shaped tray for holding a jaw impression member and artificial teeth, which is used for adjusting occlusion and manufacturing dentures. .

In the method for producing dentures according to the present invention, a transfer member for taking a jaw impression is provided on one surface of a dental tooth mold tray, a wax embankment for implanting artificial teeth is provided on the other surface, and the jaw mark is provided. The dental tooth tray holding the elephant and the wax embankment is directly attached to the articulator. Therefore, there is no gypsum process before the articulator is installed, reducing the setting time of the gypsum, especially eliminating the setting time of the gypsum during patient visits, and making dentures production in a short period of time. .

In addition, the dental tooth mold tray according to the present invention has a surface on one side for holding a jaw impression member, and at least one protrusion for fixing a mouth and a ridge for holding a mouth and a ridge for implanting artificial teeth. And a plurality of mounting members which are provided corresponding to the side surface and the tray mounting portion for mounting the dental tooth mold tray of the articulator, and which are mounted on the tray mounting portion. Therefore, the dental implant can be mounted on the articulator while holding the jaw impression member and the wax embankment. When manufacturing dentures using such a dental tooth-shaped tray, the gypsum process is a process prior to mounting on the articulator. There is absolutely no gypsum setting time, and especially no gypsum setting time during patient visits, making denture production a short time. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a flowchart of denture manufacturing according to an embodiment of the present invention. FIG. 2 shows an oblique view of the upper and lower jaw dental tooth trays according to the embodiment of the present invention. FIG.

FIG. 3 is a view showing a dental tooth tray holding a jaw impression member according to the embodiment of the present invention.

FIG. 4 is a view showing a dental tooth tray holding a jaw impression member and a wax embankment according to the embodiment of the present invention.

FIG. 5 is a side view of the articulator according to the embodiment of the present invention.

FIG. 6 is a diagram showing a state in which the dental tooth tray according to the embodiment of the present invention is mounted on an articulator.

FIG. 7 is a view showing a state in which artificial teeth are implanted in wax embankments held on a dental tooth tray according to the embodiment of the present invention.

FIG. 8 is a diagram showing a state in which a dental tooth-type tray holding a jaw impression member and a wax embankment with artificial teeth is embedded in gypsum according to the embodiment of the present invention.

FIG. 9 is a diagram showing a state after the wax is removed from the gypsum according to the embodiment of the present invention.

FIG. 10 is a diagram showing a state after the dental tooth-type tray and the jaw impression member are removed from the gypsum according to the embodiment of the present invention.

FIG. 11 is a diagram showing an upper denture according to the embodiment of the present invention.

FIG. 12 is a flowchart of denture production according to the prior art.

FIG. 13 is a view showing a state in which the shape of a gingival part is transferred to an impression material put on a dental tooth tray in the related art.

FIG. 14 is a diagram showing a state in which gypsum is laid on an impression material on which the shape of a gingival part has been transferred in the conventional technique.

FIG. 15 is a view showing a state in which a wax embankment is laid on a plaster jaw model separated from a dental tooth tray in the related art.

FIG. 16 is a view showing a state in which a gypsum model of gypsum with a wax embankment is fixed with gypsum to a mounting portion of an articulator in the related art.

Fig. 17 is a view showing how artificial teeth are planted on a wax embankment in the conventional technology.

Figure 18 shows that in the prior art, a plaster jaw model including an artificial toothed embankment was FIG. 3 is a view showing a state of being embedded in gypsum.

Fig. 19 is a view showing the state after the wax is removed from the gypsum in the prior art.

FIG. 20 is a diagram showing a denture for a maxilla according to the prior art. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the flowchart of FIG. 1 and FIGS. 2 to 11. Elements common to the prior art are denoted by the same reference numerals and description thereof is omitted.

S51 in FIG. 1 is a jaw impression sampling process, in which the shape of the patient's gingiva to be dentured is transferred to an impression material to obtain a jaw impression member, as in the prior art. The material of impression material is different from the mold tray.

Figure 2 shows a dental tooth tray 51A for the upper jaw and a dental tooth tray 51B for the lower jaw. For these dental tooth trays 51A and 5IB, a thin metal plate such as aluminum, a wire netting, a resin, or the like, which is bent into a shape substantially similar to a jaw shape in an oral cavity, can be used. For example, for a patient with a small gap between the upper and lower jaws, a dental tooth tray made of a resin material can be used and adjusted according to the jaw shape of the patient by cutting or the like. In addition, it can be made into an external shape with a handle.

Further, these dental tooth trays 51A, 51B are provided with one surface 53A, 53B holding the impression material and the other surface 55A, 53B holding the wax embankment. 5 B, the other side 55 A, 55 B is provided with at least one wedge 57 A, 57 B for fixing the wax embankment, A plurality of mounting members 59 A and 59 B are provided corresponding to the tray mounting portion for mounting the toothed tray, and mounted on the tray mounting portion. As the mounting corresponding members 59 A and 59 B, a steel rectangular plate is half-embedded in the dental tooth trays 51 A and 51 B. When using a set screw in the tray mounting part of the articulator for mounting the dental tooth tray, provide a recess in which the position of the set screw is determined.

In order to obtain the jaw impression member, in Fig. 3, a soft impression material is placed on the dental tooth tray 51A for the upper jaw to an appropriate thickness and pressed against the gingiva in the patient's mouth. Transfer the gingival shape 5A to obtain the jaw impression member 63A. As the impression material, a material having low deformability with respect to temperature or the like, preferably, silicone resin is used. This allows the transferred shape of the gingival part 5A to be maintained for a necessary period without deformation.

S53 is a wax embankment forming process, in which the wax is piled up like a bank along the gingival part on the other side of the dental tooth tray holding the jaw impression member. It is a process. In FIG. 4, a wax embankment 65A is provided on the other side of the dental tooth tray 51A, which holds the jaw impression member 63A, on the other side. For the wax, dental paraffin wax can be used. It is also possible to apply a thin layer of dental resin between the dental mold tray 51A and the wax embankment 65A, and use this as a resin floor.

S55 is an articulator mounting step in which the dental tooth tray holding the jaw impression member and the wax embankment is mounted on the articulator.

FIG. 5 shows an articulator 71, which has a base 73 and a rotating arm 75. The rotating arm rotates about 180 degrees around the rotating support portion 77 of the base as shown by the arrow in the figure. can do. The base 73 supports the lower jaw mounting portion 81B by the support portion 79, and the lower jaw mounting portion 81B is a mounting screw 83B as a tray mounting portion for mounting a dental tooth tray for the lower jaw. Is provided. The rotating arm 75 has an upper jaw mounting portion 81 A, and has a mounting screw 83 A as a tray mounting portion for mounting a dental tooth tray for the upper jaw.

A plurality of, preferably three or more, mounting screws for the upper and lower jaws are provided at positions suitable for holding and fixing the dental tooth tray stably. . The tray mounting portion can use, for example, a pin with a panel, in addition to the mounting screw. Further, the shape of the corresponding portion between the tray mounting portion of the articulator 71 and the mounting member of the dental tooth tray can be fitted to ensure more reliable positioning.

Figure 6 shows the dental tooth trays 51 1, 51 1B attached to the articulator 71, and the height of the row embankments 65 5, 65 5 separately measured for the patient's bite position. This shows the condition adjusted. In this manner, the mounting members 5 9 Α, 5 Α, By using 5 9 B and the mounting screws 83 A, 83 B of the articulator 71, the jaw impression member

The dental tooth trays 51 A, 51 B can be mounted on the articulator 71 while holding the 63 A, 63 8 and the ridges 65 58, 65 B.

Until the step of attaching the articulator in S55, the patient's jaw impression must be collected, the bite position measured, and the patient must go to the hospital. Here, a feature of the present invention is that no gypsum technology is used in any of the conventional processes, so that there is no waiting time for setting the gypsum, and the time required for the process is greatly reduced.

The subsequent steps are characterized by the fact that dentures are manufactured integrally with the dental tooth tray that holds the jaw impression member and the artificial toothed embankment.However, the manufacturing technology is the same as the conventional technology. Since there are many, we will focus on the features with reference to the drawings.

In S57, the artificial teeth were implanted in the wax embankment process, and the teeth were sequentially adjusted using an articulator so that the artificial teeth for the upper jaw and the artificial teeth for the lower jaw were properly engaged. I do. FIG. 7 shows a state in which artificial teeth 15A and 15B are implanted in the wax embankments 65A and 65B held by the dental tooth trays 51A and 51B.

The S59 is a gypsum embedding process, in which an artificial toothed wax embankment adjusted for proper occlusion and a dental tooth tray holding jaw impression members are removed from the articulator and placed in a container The process is divided into two parts, the lower half and the upper half, and the surrounding area is embedded with gypsum. This process is performed separately for the upper dental tooth tray and the lower dental tooth tray. Figure 8 shows the situation. The manufacturing technology is the same as that described in the prior art, except that the objects to be placed in the container 17A are a wax embankment with artificial teeth and a dental tooth-shaped tray holding a jaw impression member. And the description is omitted.

S61 is a wax removing step in which the entire vessel is heated to an appropriate temperature to dissolve the wax and flow out of the vessel to remove the wax. Fig. 9 shows the state after the wax embankment flowed out, and a cavity 87A was formed corresponding to the wax embankment part that flowed out. The artificial tooth 15 A is kept embedded in the gypsum.

S63 is a tray removing step in which the dental tooth-shaped tray and the jaw impression member are removed from the gypsum in the container. From the state of Fig. 9, the upper half gypsum and the lower half gypsum in the container 17A are once separated, and the dental tooth tray 51A, which is exposed by the cavity portion 87A from the lower half gypsum, The jaw impression member 6 3 A is removed. After removal, the upper half again Combine the gypsum and the lower half of gypsum and place in container 17A. FIG. 10 shows the state in the container after the removal. The hollow portion 89A at this time is wider than the hollow portion 87A, and becomes a hollow portion bordered by the gingival shape 5A. The removed dental mold tray 51A is reused.

S 65 is a resin gingival part formation process. After filling the cavity with dental resin and hardening, the upper half gypsum and the lower half gypsum are removed from the container and divided by the boundary surface to form a cavity. Take out the dental resin filled in the part. At this time, the artificial teeth are fixed by the dental resin, and the dental resin has a gingival portion on the side opposite to the artificial teeth, so that dentures are formed as a whole. After that, the necessary shaping is performed and the denture is completed. FIG. 11 shows a completed denture for a maxillary tooth 93 A of a dental resin bed 91 A having artificial teeth 15 A and a gingival part shape 5 A obtained in this way.

Similarly, the denture for the lower jaw can be obtained by performing the steps S59 to S65.

In addition, for convenience, the indications in FIGS. 7 to 11 are made for four dentures, but the present invention can be applied to other dentures.In addition to the dentures, the front teeth denture, or the front teeth and the molars The present invention can also be implemented for combinations of the above and all dentures for all teeth.

Unlike the steps up to S55, in the steps after S59, the gypsum technique is used in the present invention as in the conventional technique. However, since the step of implanting the artificial tooth in S57 does not require the patient to go to the hospital, there is no waiting time for the patient. Industrial applicability

INDUSTRIAL APPLICABILITY As described above, the denture manufacturing method, the dental tooth tray, and the set of the dental tooth tray and the articulator according to the present invention are useful in the production of dentures. It is suitable for shortening the setting time of gypsum during hospital visits and for producing dentures in a short period of time.

Claims

The scope of the claims

1. A denture manufacturing method for manufacturing dentures using a set of a dental tooth mold tray for implanting artificial teeth and an articulator for adjusting occlusion of the implanted artificial teeth, wherein the dental teeth A jaw impression collecting step of transferring a shape of a patient's gingiva to which dentures are to be transferred to a transfer member provided on one surface of the mold tray and collecting a jaw impression;

A wax embankment forming step of providing a wax embankment on the other surface of the dental tooth mold tray; a dental tooth mold tray attaching step of attaching the dental tooth mold tray to the articulator; and an artificial tooth on the wax embankment. Implanting an artificial tooth to adjust the occlusion;

A denture manufacturing method comprising: manufacturing a denture based on a dental tooth tray holding a jaw impression and an artificial tooth having an occlusal adjustment.

2. A dental tooth tray which is attached to an articulator for adjusting the occlusion of an artificial tooth and used to manufacture dentures,

A surface on one side for holding a jaw impression member to which the shape of the patient's gingiva is to be mounted; and

At least one wax ridge fixing wedge is provided, and the other surface for holding the wax ridge where the artificial teeth are to be implanted;

A plurality of mounting corresponding members provided corresponding to a tray mounting portion for mounting a dental tooth type tray of the articulator, and mounted on the tray mounting portion,

A dental tooth tray, comprising: a jaw impression member to be held; and an artificial tooth having an occlusal adjustment, which is used for producing dentures.

3. A set of a dental tooth tray for implanting artificial teeth, and an articulator for mounting the dental tooth tray and adjusting the occlusion of the implanted artificial teeth,

The dental tooth tray is

A dental tooth tray and an articulator set which are used for adjusting occlusion and manufacturing dentures based on a dental tooth tray holding a jaw impression member and artificial teeth .