JPS6264358A - Production of crown mold made of wax and wax former for occlusion surface part used therein - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention belongs to the field of a method for producing a wax dental crown model that is a model for a metal tooth crown, and a wax former for the occlusal surface used in carrying out this manufacturing method. .

(Prior art) In the dental industry, when a carious tooth is scraped off and the shape of the scraped tooth is restored, the original shape of the tooth is restored with wax, etc., and a tooth crown formed with this wax, etc. A metal crown is cast using this as a model, and this metal crown is attached to the patient's abutment tooth.

Wax dental crown models are produced by referring to data remaining on the opposing teeth or adjacent teeth, or, if this data is not available, by hand, relying solely on the intuition and experience of the dental technician. Ta. In the production of this wax dental crown model, the most important part is the production of the part that comes into contact with the opposing teeth, that is, the occlusal surface part.

Conventionally, in order to facilitate the production of wax dental crown models,
[] A wax former for molding only the occlusal surface of a wax dental crown model called a wax former for the occlusal surface in which a pattern for the occlusal surface of the tooth is recessed was used, but this conventional occlusal surface Wax formers are not available with different expansion angles of the occlusal surface.
1 does not match the corresponding portion of the opposing teeth 12 in many cases. For this reason, the occlusal surface of the wax crown model had to be significantly reworked by hand after molding. The advantage of making it easier was lost.

(Problems to be Solved by the Invention) The present invention is based on the problem described in J2, and uses Wanokushu A-mer for occlusal surface parts in which the development angles of the occlusal surfaces of the recessed patterns for occlusal surface parts are different. This was developed with the aim of facilitating the production of wax dental crown models.

(Means for Solving the Problems) The present invention provides a method for manufacturing a dental crown model made of wax based on a plaster model replicating a patient's tooth shape, in which various kinds of crowns with different angles of development of the occlusal surface are manufactured. Prepare a wax foamer for the occlusal surface with a recessed pattern for the occlusal surface, or prepare a variety of wax patterns for the occlusal surface, each with a recessed pattern for the occlusal surface, each with a different angle of development of the occlusal surface. In advance, select the optimal occlusal surface pattern based on the occlusal shape of the opposing teeth or adjacent teeth, and use this occlusal surface pattern as the prototype to mold only the occlusal surface of the Works crown model. The present invention relates to a method for producing a dental crown model made of wax, characterized in that a dental crown model made of wax is manufactured by welding with a portion of the tooth crown, and a wax former for an occlusal surface portion used in carrying out this manufacturing method.

(Example) FIGS. 1 and 2 show a wax former for an occlusal surface portion according to the present invention.

The second wax former for the occlusal surface - Δ is made of silicone and has a development angle (the angle between adjacent occlusal facets among the many occlusal facets formed on the occlusal surface of teeth). ) 110° 120°, 130'
, 140° and 150° occlusal surface patterns PI, P
2. P3. P4. Each PS is recessed. Pattern for each occlusal surface portion Pl + P 2 + P3. P4. P.S.
Both have two rows of recessed patterns, the upper and lower rows correspond to the upper and lower teeth, respectively, and the upper and lower rows are the occlusal patterns of four premolars 1 and molars 2, respectively. The surface pattern is recessed. In addition, this wax former for the occlusal surface made of silicone-A is prepared by carving out five types of patterns for the occlusal surface with different angles of development on a temporary top surface made of wax, and using this as a prototype, it is made once. It is a duplicate.

In order to manufacture a dental crown model made of wax using the Wanx former A for the occlusal surface described above, it is necessary to form a polygon with slightly different angular changes at some of the corners as shown in Fig. 3. Measure the expansion angle of the opposing tooth or adjacent tooth of the prosthetic tooth using a suitable measuring tool such as the thin plate-shaped expansion angle measuring tool B, and then measure the expansion angle of the opposing tooth or adjacent tooth of the prosthetic tooth. Occlusal surface pattern PI, PK, P3. P4. PS is selected from wax formers 8 for occlusal surface parts, wax is poured using the selected pattern for occlusal surface parts as a prototype, and only the occlusal surface part C3 of the wax tooth crown prototype C is molded.

As shown in Fig. 4 (a), the occlusal surface C of the molded wax tooth crown prototype C is plastered with plaster I taken from the patient.
At the same time as wax is applied to the moth-shaped prosthesis aj3, wax is poured onto the other portion C2 to weld both 0+ and Cz. Next, with the wax crown model C still attached to the prosthetic tooth 3, the opposing tooth 4
When the occlusal surface portion C1 of the wax tooth crown prototype C is reworked while adjusting the occlusion, a completed wax tooth crown prototype C as shown in FIG. 4(b) is obtained.

Here, since the development angle of the opposing teeth or adjacent teeth of the prosthetic tooth is measured and the optimal pattern for the occlusal surface is selected, the modification of the occlusal surface CI of the wax crown model C can be compared to the conventional occlusal pattern. Compared to wax formers for face parts, the process can be performed easily and in a short time.

Therefore, even an inexperienced dental technician can easily modify the occlusal surface.

Then, a metal tooth crown is cast using the modified wax tooth crown prototype C as a prototype.

In addition, in Example 1, one wax former for occlusal surface in which various patterns for occlusal surface with different development angles of the occlusal surface were recessed was used. It is also possible to use a wide variety of wax patterns for the occlusal surface, each having a different angle of development of the occlusal surface.

Further, the wax former for occlusal surface parts according to the present invention is not limited to the case of manufacturing a wax crown model for casting a metal tooth crown, but is also applicable to so-called resin molds for crowning a prosthetic tooth. It can also be applied to the production of the occlusal surface of a tooth crown.

(Effect) According to the present invention, wax formers for occlusal surfaces in which various patterns for occlusal surfaces having different development angles of the occlusal surfaces are recessed are prepared, or Prepare a wide variety of occlusal wax patterns with different occlusal expansion angles, and measure the expansion angles of the opposing or adjacent teeth of the prosthetic tooth to find the optimal occlusal pattern. Select from wax formers for the occlusal surface, use this occlusal surface pattern as the prototype, mold only the occlusal surface of the wax tooth crown model, and weld it to the other parts, so you can rework the occlusal surface of the wax tooth crown model. of,
Compared to conventional wax formers for occlusal surfaces, the process can be performed more easily and in a shorter time, and even an inexperienced dental technician can easily rework the occlusal surface of a wax tooth crown.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a wax former for occlusal surface A according to the present invention, and FIGS.
Pg, P:l, P4. FIG. 3 is a perspective view of the development angle measuring instrument C, and FIG. 4 (A) is an enlarged sectional view of the portion P5, and FIG.
Figure 5 is a cross-sectional view of the manufactured wax tooth crown prototype C, and Figure 5 shows the occlusion of the wax tooth crown prototype manufactured using a conventional wax former for occlusal surfaces. It is a figure of the state where the surface part was aimed at the prosthetic tooth 11 of a plaster model. (Explanation of the symbols of the main parts) A: Wax former for occlusal surface B: Deployment angle measuring tool C: Wax crown model C3: Occlusal surface of wax crown model C2: Occlusal surface of wax crown model Parts other than the occlusal surface part P+, Pz, Pz, P4. Ps: Pattern for occlusal surface 1: Premolars 2: Molar teeth 3: Prosthetic teeth in plaster model 4: Opposing teeth in plaster model Fig. 2 Fig. 3

Claims (2)

[Claims] (1) In the method of manufacturing a wax dental crown model based on a plaster model replicating the patient's tooth shape, a variety of occlusal patterns with different occlusal development angles are provided for the occlusal surface. Prepare a wax former or prepare a wide variety of occlusal wax patterns each with a different angle of development of the recessed occlusal surface pattern to adjust the occlusion of opposing teeth or adjacent teeth. Judging from the surface shape, the optimal occlusal surface pattern is selected, and this occlusal surface pattern is used as a prototype to mold only the occlusal surface of the wax tooth crown prototype and weld it to the other parts to create a wax tooth crown. A method for manufacturing a wax tooth crown prototype, which is characterized by manufacturing a prototype. (2) A wax former for an occlusal surface used in a process for manufacturing a wax dental crown model, characterized in that patterns for the occlusal surface of various types with different development angles of the occlusal surface are recessed.