TWI633873B - Support base of dental mold for dental working model - Google Patents

Abstract

An object of the present invention is to provide a tooth type model support base for a dental work model which can easily and accurately form a projection and a recess for preventing rotation even when a general-purpose molding machine is used.

The toothed model supporting base of the dental working model of the present invention forms a part of the positioning pin fitting hole 21 in the base member 2, and forms an annular projection in such a manner as to protrude from the adjacent portion toward the side of the fixed plate member 1. 24, in the inner surface 11e of the fixing plate portion 11 of the fixing plate member 1, an annular groove 11e recessed from the other portion is provided so as to surround the base end portion of the positioning pin 12, when the positioning pin 12 is fitted into the positioning pin When the hole 21 is joined, the annular projecting portion 24 is fitted to determine the position of the fixed plate portion 11.

Description

Tooth model support for a dental work model

The present invention relates to a toothed model support abutment for a dental work model.

Fillers such as inlays and crowns have been produced in the following manner.

That is, first, a model of the dentition of the patient undergoing dental treatment is obtained, and gypsum is flown into the model of the female mold to prepare a tooth model.

Next, the tooth type model is in a state in which the positioning pin is attached, and each positioning pin is attached to the positioning pin fitting hole of the base member for determining the pin position to prepare a dental work model.

Then, the tooth portion (hereinafter referred to as "filling portion") of the filler of the tooth type model to be produced in the dental work model thus prepared is cut away from the adjacent tooth portion in a state in which the positioning pin is attached. Make a toothed pattern (pillar teeth).

The original position of the obtained tooth type template is inserted and removed, so that the filling piece mounted on the tooth type template is well trimmed with the adjacent teeth, and adjusted so that the bite is not problematic, and the filling is completed.

However, in the above-described method of manufacturing a dental work model, it is necessary to drill a hole for a gypsum tooth-type model to mount a hole for setting a pin, and to work to set a pin for the hole. The ground set setting pin must be quite skilled and is a problem.

Therefore, it is possible to produce a dental work model, and to accurately and easily produce a filler, and to provide a toothed model support base having a fixed plate member and a base member obtained by injection molding (see Patent Document 1).

Specifically, the tooth type model support base, the fixed plate member is provided with a fixed plate portion and a plurality of positioning pins, and the fixed plate member has a toothed model fixing surface on the surface and a fixed tooth type model, and the plurality of positioning pins It is previously provided in an outstanding manner on the inner surface of the fixed plate portion (opposite surface of the toothed model fixing surface).

Further, the base member is provided with a positioning pin fitting hole that matches the stitch of the positioning pin provided on the fixed plate portion.

In this way, by using the above-described tooth type model supporting base, a tooth type model can be produced by gypsum in the same manner as in the related art, and the obtained tooth type model can be fixed only to the tooth type model fixing surface of the fixed plate portion, and a dental work model can be produced. .

In other words, it is not necessary to drill the hole for setting the position pin as in the conventional tooth type model, and the work of setting the position pin in the hole, etc., so that the dental work model can be easily produced.

Further, the tooth type model supports the base, and when the tooth type template is formed, a part of the fixed plate member is divided by the other portion, but the base member is not divided.

Therefore, the toothed model supporting the abutment of the tooth type template supports the abutment, and can be used for the production of the tooth type template only by replacing the fixed plate member after the filling operation is completed.

That is, the abutment members can be used multiple times and are very economical.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2004-283259

Therefore, in the above-described conventional tooth type model supporting base, in order to prevent the rotation of the tooth type plate, a concave portion is provided at a position away from each of the positioning pins of the fixing plate portion of the fixing plate member, and the position of the abutment side away from the positioning pin is set. A small protrusion embedded in the above recess.

However, when the base is supported by the above-described tooth type model, the protrusions may be deformed by the tensile force during molding or the like in a general-purpose molding machine.

On the other hand, since the projection is formed in a skewed state due to a tensile force or the like, the positioning pin cannot be completely fitted to the positioning pin fitting hole as long as one projection cannot be accurately fitted into the concave portion.

Therefore, high precision is required for the forming. However, when a small projection is to be partially provided as described above, it is difficult to achieve a considerable precision by using a general-purpose molding machine, and finally, unnecessary work such as cutting is required, and there is a problem of poor productivity.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a tooth type mold supporting base for a dental work model which can easily and accurately form a projection and a recess for preventing rotation even if a general-purpose molding machine is used.

In order to achieve the above object, the related tooth type model supporting base of the present invention (hereinafter, referred to as "the tooth type model supporting base of the present invention") includes: a fixed plate member which is a tooth having a fixed tooth type model on its surface. a fixing plate portion of the fixed surface of the model, and a resin composition having a plurality of positioning pins provided to protrude from the inner surface side of the fixing plate portion; and a base member The utility model is composed of a resin composition having a plurality of positioning pin fitting holes for fitting the positioning pin; wherein the base member forms a part of the positioning pin fitting hole and has a fixing portion from the adjacent portion. An annular protruding portion provided on the side of the plate member, wherein the fixing plate member is disposed on the inner surface of the fixing plate portion of the fixing plate member so as to surround the end portion of the positioning pin In the groove, when the positioning pin is fitted to the positioning pin fitting hole, the annular protruding portion is fitted to determine the position of the fixing plate portion.

The tooth type model supporting base of the present invention is not particularly limited. When the positioning pin is fitted into the positioning pin fitting hole, the positioning pin is crimped to the outer wall surface of the positioning pin or the positioning pin fitting hole. In the state of the wall surface, in order to suppress the pressure contact with the outer wall surface of the positioning pin and the inner wall surface of the positioning pin fitting hole, a protruding strip may be provided along the outer wall surface of the positioning pin and the positioning pin fitting hole Either one of the inner wall surfaces is provided in parallel with the fitting direction in which the positioning pin is fitted to the positioning pin fitting hole.

In other words, a gap is formed between the outer wall surface of the positioning pin and the inner wall surface of the positioning pin fitting hole by the ridge, and the positioning pin can be smoothly fitted even if the positioning pin is deformed in the twisting direction during molding. Locating pin fitting holes.

Moreover, since the protruding strip must be crimped to the outer wall surface of the positioning pin or the inner wall surface of the positioning pin fitting hole, even if the tooth type plate is pulled out from the base member several times, the tooth type template is firmly held on the base plate. The components will not fall off even if they are attached to the articulator.

Further, since the pressure-bonding area is small, the insertion and insertion can be easily performed with a light force, and the load on the inner wall surface of the positioning pin fitting hole is small, and the positioning pin fitting hole is not easily deformed, so the abutment member The durability is improved, and the frequency of exchange of the abutment members is reduced.

In the tooth type model supporting base of the present invention, it is preferable that the length of the positioning pin fitting hole in the axial direction is shorter than the length of the positioning pin in the axial direction.

In other words, in a state in which the positioning pin is normally fitted to the positioning pin fitting hole, the front end of the positioning pin protrudes outward from the end portion of the positioning pin fitting hole.

Therefore, the toothed pattern can be easily taken out from the base member by pressing the protruding portion into the positioning pin fitting hole side or the like with a finger.

Further, the positioning pin is not particularly limited as long as it protrudes from the positioning pin fitting hole, but is preferably about 1 to 2 mm.

That is, if it is too short, when the finger is pressed in, the protruding portion will fall into the finger and the positioning may not be possible. The pin transmits the squeezing force. On the other hand, if it is too long, the positioning pin may be deformed or broken when pressed.

The tooth type model supporting base of the present invention, the material of the fixing plate member, and the fixing plate member are not particularly limited as long as they can be easily cut by the saw and the tooth type model, and for example, polystyrene is used. Ethylene is used as a matrix resin, and contains a resin composition such as a burned powder of a shell such as gypsum or oyster shell as a filler.

On the other hand, the base member is preferably formed of a resin composition softer than the above-mentioned fixed plate member, in consideration of the fact that the base member can be reused a plurality of times.

In addition, when the fixing plate member is formed of a resin composition containing a fired material powder such as gypsum or clam shell as a filler, the material of the base member may be, for example, a polystyrene-containing matrix resin. Talc is used as a resin composition of the filler.

The tooth type model supporting base of the present invention is not particularly limited, and the fixing plate member is preferably configured by a fixed plate portion and a plurality of divided bodies having at least one positioning pin in the fixed plate portion. .

That is, at the time of producing the filling, the filling portion of the toothed model and the tooth portion adjacent to at least one end of the filling portion where the positioning is performed may be fixed to the fixing plate portion.

Therefore, if the fixed plate portion is divided into a plurality of divided bodies as described above, when a new filling type is created using the new tooth type model, the filling portion of the toothed model is formed and adjacent to the positioning thereof. The divided body of the tooth portion at least one end of the filling portion is replaced with a new one, and the divided body for supporting the toothed model is not applied to the divided plate portion, and can be directly reused, so that cost can be achieved. reduce.

The tooth type model supporting base of the present invention is not particularly limited, and is preferably configured to have a marking line at a predetermined cutting position of the toothed model fixing surface of the fixing plate portion of the fixing plate member.

That is, due to the shape of the gums and the dentition of the patient, the size and the degree of bending of the tooth model are greatly different. Therefore, even if the tooth shape model has a different shape or size, the fixed plate portion needs to be able to support fixation, so To a large extent, the fixed surface of the toothed model is made larger.

Therefore, in the state in which the tooth type model is supported next, the tooth type model fixing surface must be partially exposed to the outside, and the marking line can be recognized. Therefore, if the saw is moved along the marking line, it can be cut. The toothed pattern is easily and correctly produced under the locating pin or the abutment member.

Further, the method for producing the marking line is not particularly limited, and may be provided at the same time as molding, or may be set by printing after the fixing plate member is formed.

The method of simultaneously providing at the time of molding may be, for example, a method of smoothing the surface of the reticle portion and crimping other portions.

Further, the tooth type model supporting base of the present invention, the positioning pin and the positioning pin fitting hole are preferably formed into a cross-sectional shape having a long axis and a short axis.

That is, the positioning pin can be prevented from rotating in the positioning pin fitting hole.

The tooth type model supporting base of the present invention, as described above, comprises: a fixing plate member which is a fixed plate portion having a tooth type model fixing surface having a fixed tooth type model on the surface, and a fixing plate portion provided to be provided by the fixing plate portion a resin composition composed of a plurality of positioning pins protruding from the inner surface side; and the base member is composed of a resin composition having a plurality of positioning pin fitting holes for fitting the positioning pins; The base member is formed as a part of the positioning pin fitting hole, and has an annular projecting portion provided to protrude from the adjacent portion toward the fixed plate member side, and the fixing plate member is fixed to the fixing plate portion of the fixing plate member The inner surface is provided with an annular groove recessed from the other portion so as to surround the end portion of the positioning pin. When the positioning pin is fitted into the positioning pin fitting hole, the annular protruding portion is fitted to determine the fixing plate. The location of the department.

That is, the tooth type model supporting base of the present invention is formed with a locating pin portion having a relatively large thickness of a resin smooth flow and an annular groove or an annular projection near the positioning pin, or a fitting recess or fitting. Since the convex portion is used, the fixing plate member and the base member can be easily formed with high precision even if a general-purpose molding machine is used.

A‧‧‧Tooth model support abutment

1‧‧‧Fixed plate components

1a, 1b‧‧‧ split

11‧‧‧ Fixed plate department

11a‧‧‧Toothed model fixing surface

11b‧‧‧Linear smoothing (marking line)

11c‧‧‧Locating pin position mark

11d‧‧‧ inside

11e‧‧‧ annular groove

11f‧‧‧Position pin position confirmation ridge

12‧‧‧Locating pin

13‧‧‧

2‧‧‧Abutment components

20‧‧‧Base of the abutment

20a‧‧‧Position pin fitting hole position confirmation ridge

21‧‧‧Position pin fitting hole

22‧‧‧ board bracket

22a‧‧‧Position pin fitting hole position confirmation protrusion

23‧‧‧Scissors for backing

24‧‧‧ annular protrusion

4‧‧‧Tooth model

5‧‧‧ dental work model

6‧‧‧Filling

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially exploded perspective view showing an embodiment of a toothed model support base of the present invention.

2 is a top plan view of the toothed model support base of FIG. 1.

Fig. 3 is a perspective view of the divided body of the toothed model support base of Fig. 1 viewed from the inner side.

Fig. 4 is a plan view of the divided body of Fig. 3;

Fig. 5 is a bottom view of the divided body of Fig. 3;

Figure 6 is a right side view of the split body of Figure 3.

Figure 7 is a front elevational view of the split body of Figure 3.

Figure 8 is a rear elevational view of the split body of Figure 3.

Figure 9 is a cross-sectional view taken along line B-B of Figure 5;

Fig. 10 is an enlarged view of a portion C of Fig. 5;

Fig. 11 is an enlarged view of a portion D of Fig. 6.

Figure 12 is a plan view of the abutment member of the toothed model support base of Figure 1.

Figure 13 is a bottom plan view of the abutment member of Figure 12;

Figure 14 is a right side view of the abutment member of Figure 12.

Figure 15 is a front elevational view of the abutment member of Figure 12.

Figure 16 is a rear elevational view of the abutment member of Figure 12.

Fig. 17 is a schematic cross-sectional view showing a state in which a positioning pin is fitted to a positioning pin fitting hole in a cross section.

Fig. 18 is a plan view showing a state in which the toothed model support base of Fig. 1 supports a fixed toothed model.

Fig. 19 is a perspective view showing the state of the following of the tooth type model.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments of the present invention.

1 and 2 show an embodiment of a tooth type model support base of the present invention.

As shown in FIG. 1 and FIG. 2, the tooth type model supports a base (hereinafter, simply referred to as "base") A, and includes a fixed plate member 1 including a pair of left and right divided bodies 1a and 1b. Abutment member 2.

For the divided bodies 1a and 1b, for example, a synthetic resin composition obtained by mixing gypsum in a ratio of about 30 to 40% by weight of a polystyrene resin can be obtained by injection molding in a low foaming state, as shown in Fig. 1 and Fig. 1 . As shown in Fig. 2, the fixed plate portion 11 has a semi-horse shape which is bilaterally symmetrical.

On the other hand, the fixed plate portion 11 has a tooth-shaped model fixing surface 11a, and is crimped in addition to the linear smooth portion 11b of the reticle, and can be a tooth-shaped model at a position directly above the positioning pin 12 to be described later. The fixing surface 11a side confirms the position of the positioning pin, and the concave elliptical positioning pin position mark 11c is provided.

Moreover, as shown in FIG. 1, the position confirmation protrusion 11f of the positioning pin 12 is protruded so that the inner side surface of the fixing plate part 11 may be the same plane with the long axis of the positioning pin 12 mentioned later.

Further, as shown in FIGS. 3 to 11 , each of the divided bodies 1 a and 1 b is provided with eight positioning pins 12 that are suspended from the inner surface side of the fixed plate portion 11 .

Each of the positioning pins 12 is suspended from the bottom surface of the recess provided on the inner surface of the fixed plate portion 11, and the base end portion and the peripheral wall surface of the recess portion are formed by the annular projection 24 of the base member 2 to be described later. Annular groove 11e.

Further, each of the positioning pins 12 has a rectangular cross section, and as shown in Fig. 9, the base end (the end portion of the fixing plate portion 11) is gradually tapered toward the tip by a degree inclined to the wall surface opposite to the tip end. In the above-described manner, two ridges are respectively protruded from the two sides of the long side of the cut surface rectangle, and one ridge is protruded from each of the short sides.

Further, the dimensions of the respective portions are illustrated in FIGS. 9 to 11 , but the dimensions of the respective portions may be appropriately changed as long as the object of the present invention is not impaired.

The base member 2 is obtained by injection molding a resin composition containing polystyrene as a matrix resin and talc as a filler. As shown in FIGS. 12 to 16 , the base main body portion 20 , the 16 positioning pin fitting holes 21 , the 16 plate brackets 22 , the 15 saw retracting grooves 23 , and the 16 annular projections 24 are provided. .

As shown in FIG. 1, the base main body portion 20 is provided with a positioning pin fitting hole position confirming ridge 20a so as to protrude from the side wall surface along the surface including the long axis of each of the positioning pin fitting holes 21.

The plate bracket 22 is provided on the base body portion at a position further inside than the outer edge of the base body portion 20 so as to form the saw retracting groove 23 between the adjacent plate brackets 22. The trapezoid of 20 receives the inner surface 11d of the fixed plate portion 11 on the top surface thereof.

Further, each of the plate brackets 22 is seen from the outer edge of the base body portion 20, and the dimension in the longitudinal direction (the width dimension of the horseshoe shape of the fixed plate portion 11) is shorter than the width direction of the horseshoe shape of the fixed plate portion 11. .

Further, the plate bracket 22 is provided with a positioning pin fitting hole position confirming ridge 22a protruding from the side wall surface so as to extend along the long axis of each of the positioning pin fitting holes 21.

The annular projection 24 is provided to stand on the top surface of the plate bracket 22 to form a part of the positioning pin fitting hole 21, and is formed to be fitted into the annular groove 11e as shown in FIG. the size of.

The positioning pin fitting hole 21 has almost the same cross-sectional shape as the positioning pin 12, and its length is shorter than the height of the inner surface 11d of the fixing plate portion 11 of the positioning pin 12 by 1 to 2 mm.

That is, as shown in FIG. 17, until the inner surface 11d of the fixed plate portion 11 is received by the plate bracket 22, and the positioning pin 12 is fitted to the positioning pin fitting hole 21, the front end of the positioning pin 12 is guided by the positioning pin. The fitting hole 21 protrudes by 1 to 2 mm.

Further, at this time, the annular projection 24 suppresses the twist of the positioning pin 12 fitted to the annular groove 11e, and the protruding strip 13 abuts against the inner wall surface of the positioning pin fitting hole 21 to make the positioning pin 12 The wall surface and the inner wall surface of the positioning pin fitting hole 21 are in a state of light contact or a gap.

In this case, the end edge of the plate bracket 22 in the longitudinal direction is in a state in which the inner edge of the fixed plate portion 11 enters the inner side.

That is, between the fixed plate portion 11 and the end edge of the base body portion 20, a gap of the track when the tooth type plate is pulled out and inserted is generated.

This tooth type model supports the base A. For example, as shown in FIGS. 18 and 19, a toothed model 4 made of gypsum formed in the same manner as in the prior art is produced, and only the part 6 of the filling of the toothed model 4 is accepted. The toothed model fixing surface 11a of the fixed plate portion 11 of the divided body 1a fixes the toothed model 4 by an adhesive.

On the other hand, the fixed plate portion 11 of the divided body 1b supports the dental work model 5 only by the bottom pad supporting the toothed mold 4 below.

Further, the tooth type model 4 is obtained by cutting at least the gypsum model 4 (not shown) along the E line and the F line shown in Fig. 18, and cutting the fixed plate portion 11 to be filled. The object 6 is only adjacent to the position of the toothed template for positioning the fabricated toothed template.

On the other hand, the tooth type template was pulled out and inserted a plurality of times, and the filling material 6 was produced in the same manner as in the past.

Moreover, the dental work model 5 is usually attached to the articulator in a state in which the opening of the base member 2 is closed by a cover member (not shown).

This tooth type model supports the base A, and as described above, has an excellent effect as follows.

(1) The annular groove 11e and the annular projection 24 of the tooth-shaped pattern are provided so as to be adjacent to the formation portion of the positioning pin 12 and the positioning pin fitting hole 21 having a relatively large thickness, so that even a general-purpose molding is used. The annular groove 11e and the annular projection 24 can also be formed with high precision.

In other words, it is possible to reduce the adjustment work such as cutting and reduce the cost by eliminating the need for a high-precision precision molding machine.

(2) Since the protruding strip 13 is provided on the side wall surface of the positioning pin 12, when the positioning pin 12 is fitted into the positioning pin fitting hole 21, the protruding strip 13 abuts against the inner wall surface of the positioning pin fitting hole 21, The contact area between the positioning pin 12 and the inner wall surface of the positioning pin fitting hole 21 is small.

Therefore, the insertion and removal of the tooth type template can be easily performed.

(3) In a state in which the positioning pin 12 is normally fitted to the positioning pin fitting hole 21, the tip end of the positioning pin 12 protrudes by 1 to 2 mm at the end of the positioning pin fitting hole 21, and therefore, only by the finger By pushing the tip of the positioning pin 12, the tooth type template can be easily taken out from the base member 2.

(4) Since the linear smoothing portion 11b serving as the reticle is provided on the toothed model fixing surface 11a, when the toothed pattern 4 is cut by the saw to form the toothed pattern, the fixed plate portion 11 can be accurately cut by the saw. The position next to the groove 23 for the saw retreat.

That is, the saw can be easily prevented from damaging the abutment member 2.

(5) Since the positioning pin position mark 11c is provided on the tooth type model fixing surface 11a, the teeth of the tooth type mold 4 can be easily attached to the fixing plate portion 11 so as to be directly above the positioning pin 12.

(6) Since the tooth type model fixing surface 11a is subjected to crimping processing, the adhesion strength of the tooth type model 4 by the adhesive can be improved.

(7) Since the fixed plate member 1 is composed of the two divided bodies 1a and 1b, only the portion forming the filler 6 of the toothed model 4 and the divided body 1a adjacent to the partial side of the portion can be accepted ( 1b) Following the tooth profile model 4.

That is, the divided body 1b (1a) which does not follow the tooth type model 4 can be reused, and waste can be reduced.

(8) Since the positioning pin fitting hole position confirming ridges 20a, the locating pin fitting hole position confirming ridges 22a, and the locating pin position confirming ridges 11f are provided, it is possible to visually confirm whether the locating pins 12 are straight or not. The fitting pin fitting hole 21 is fitted directly to the positioning pin.

In addition, the positioning pin fitting hole position confirmation protrusion 20a, the positioning pin fitting hole position confirmation protrusion 22a, and the positioning pin position confirmation protrusion 11f can confirm the position of the positioning pin 12, so that the cutting pin 12 can be cut out. The tooth type template prevents the saw from damaging the positioning pin 12.

(9) The long side dimension of the plate bracket 22 is shorter than the width dimension of the fixed plate portion 11, and between the fixed plate portion 11 and the end edge of the base body portion 20, when the tooth type template is pulled out and inserted, The gap of the track makes it easy to insert and remove the tooth type template.

The present invention is not limited to the above embodiments. For example, in the above embodiment The cross-section of the locating pin is slightly rectangular, but it can also be oblong in shape, elliptical in section, and round in section.

In the above-described embodiment, the sawing member retreating groove is provided in the base member. However, the groove in which the saw can be cut into the width can be similarly provided in the portion of the fixing plate portion facing the saw retreating groove.

In the above embodiment, the fixed plate member is composed of two divided bodies, but may be divided into three or 16 divided pieces or may not be divided.

In the above embodiment, the protrusion is provided on the side surface of the positioning pin, but there is no protrusion. The number of ridges may be 5 or more, or 7 or more.

In the above embodiment, the positioning pin may be protruded from the bottom of the recess provided on the inner surface of the fixing plate portion, and an annular groove may be formed along the base end portion of the positioning pin to form a ring forming a part of the positioning pin fitting hole. The protruding portion is fitted into the annular groove, and may be formed at each of the positioning pin fitting holes of the plate bracket portion of the base member, and the concave insertion is provided downward from the receiving surface of the plate bracket portion. The recessed portion is provided with a positioning pin fitting hole penetrating downward from the bottom of the fitting recessed portion, that is, the end portion of the positioning pin fitting hole on the side of the fixing plate portion is attached to the bottom opening of the fitting recessed portion, and A fitting protrusion that is fitted to the fitting recess is protruded from an inner surface of the fixing plate portion, and a protruding positioning pin is provided by a tip end of each fitting protrusion.

In the above-described embodiment, the locating pin fitting hole position confirming ridge and the locating pin position confirming ridge are provided in order to confirm the position of the locating pin, but the groove or the printing line may be used as long as the position can be confirmed. Replace the spurs.

Claims (9)

A toothed model support base for a dental work model, comprising: a fixed plate member, which is a fixed plate portion having a toothed model fixing surface having a fixed tooth type model on the surface, and having a fixed plate portion disposed a resin composition composed of a plurality of positioning pins protruding from the inner surface side; and a base member formed of a resin composition having a plurality of positioning pin fitting holes for fitting the positioning pins; wherein the base The table member forms a part of the positioning pin fitting hole, and has an annular protruding portion provided to protrude from the adjacent portion toward the fixing plate member side; the fixing plate member is inside the fixing plate portion of the fixing plate member The annular groove is recessed from the other portion so as to surround the end portion of the positioning pin. When the positioning pin is fitted into the positioning pin fitting hole, the annular protruding portion is fitted to determine the fixing plate portion. s position. The toothed model supporting base according to the first aspect of the invention, wherein the positioning pin is fitted to the positioning pin fitting hole, and is crimped to the outer wall surface of the positioning pin or the positioning pin is fitted. In a state of the inner wall surface of the hole, in order to suppress pressure contact with the outer wall surface of the positioning pin and the inner wall surface of the positioning pin fitting hole, a protruding strip is provided which is fitted along the outer wall surface of the positioning pin and the positioning pin Any one of the inner wall surfaces of the holes is provided in parallel with the fitting direction in which the positioning pins are fitted to the positioning pin fitting holes. The tooth type model supporting base according to claim 1 or 2, wherein the length of the positioning pin fitting hole in the axial direction is shorter than the length of the positioning pin in the axial direction. A toothed model supporting abutment as described in claim 1 or 2, wherein the fixed plate structure The piece is formed by a plurality of divided bodies each having a fixed plate portion and at least one positioning pin disposed on the fixed plate portion. The toothed model supporting base according to claim 1 or 2, wherein the fixing plate member is provided with a marking line at a predetermined cutting position of the toothed model fixing surface of the fixing plate portion. The tooth type model supporting base according to claim 1 or 2, wherein the length of the positioning pin fitting hole in the axial direction is shorter than the length of the positioning pin in the axial direction, and the fixing plate member is composed of plural The divided body is formed to have a fixed plate portion and at least one positioning pin disposed on the fixed plate portion. The tooth type model supporting base according to claim 1 or 2, wherein the length of the positioning pin fitting hole in the axial direction is shorter than the length of the positioning pin in the axial direction, and the fixing plate member is fixed to the fixing plate. The cutting position of the fixed surface of the tooth type model is provided with a marking line. The toothed model support base according to claim 1 or 2, wherein the fixed plate member is formed by a plurality of divided bodies each having a fixed plate portion and at least a fixed plate portion. A positioning pin is provided with a marking line at a predetermined cutting position of the toothed model fixing surface of the fixing plate portion. The tooth type model supporting base according to claim 1 or 2, wherein the length of the positioning pin fitting hole in the axial direction is shorter than the length of the positioning pin in the axial direction, and the fixing plate member is composed of plural The divided body is formed to have a fixing plate portion and at least one positioning pin provided on the fixing plate portion, and a marking line is provided at a predetermined cutting position of the toothed model fixing surface of the fixing plate portion.