JP5443308B2 - Work model for dental technician and support base used therefor - Google Patents

Work model for dental technician and support base used therefor Download PDF

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JP5443308B2
JP5443308B2 JP2010202227A JP2010202227A JP5443308B2 JP 5443308 B2 JP5443308 B2 JP 5443308B2 JP 2010202227 A JP2010202227 A JP 2010202227A JP 2010202227 A JP2010202227 A JP 2010202227A JP 5443308 B2 JP5443308 B2 JP 5443308B2
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幸二 齊藤
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有限会社齋藤歯研工業所
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Description

本発明は、歯科治療などにおいて用いられる歯科技工用作業模型及びこれに用いる支持基台に関する。   The present invention relates to a dental technician work model used in dental treatment and the like and a support base used therefor.

一般に、歯科治療などにおいて用いられる歯科技工用作業模型は、歯形模型が固定される固定用プレートと、固定用プレートに植設された複数のダウエルピンと、固定用プレートを支持するための支持基台と、を備えている（例えば、特許文献１参照）。支持基台は合成樹脂から形成され、その上面には、複数の挿入孔及び複数の柱状突部が設けられている。挿入孔は、支持基台の上面に間隔を置いて配設され、また柱状突部は、挿入孔の両側に且つ支持基台の上面における側縁より内側に配設されている。固定用プレートは石膏から形成され、その下面には、支持基台の複数の柱状突部に対応して複数の柱状凹部が設けられている。   Generally, a dental technician work model used in dental treatment or the like includes a fixing plate to which a tooth model is fixed, a plurality of dowel pins implanted in the fixing plate, and a support base for supporting the fixing plate. (For example, refer to Patent Document 1). The support base is made of synthetic resin, and a plurality of insertion holes and a plurality of columnar protrusions are provided on the upper surface thereof. The insertion holes are disposed at intervals on the upper surface of the support base, and the columnar protrusions are disposed on both sides of the insertion hole and on the inner side of the side edge on the upper surface of the support base. The fixing plate is made of gypsum, and a plurality of columnar recesses are provided on the lower surface thereof corresponding to the plurality of columnar protrusions of the support base.

固定用プレートに植設されたダウエルピンを支持基台の挿入孔に挿入することにより、固定用プレートが支持基台の上面に支持される。この支持状態では、支持基台の柱状突部と固定用プレートの柱状凹部とが相互に連結される。そして、歯形模型の所定部位を固定用プレートとともに切断し、切断した固定用プレートを支持基台の上面に支持させた状態で、切断した歯形模型を用いて所要の作業（例えば、歯冠補綴物の製作等）が行われる。このとき、切断した固定用プレートの柱状凹部と支持基台の柱状突部とが相互に連結されているので、切断した固定用プレートの支持基台に対する回転が抑制される。   The fixing plate is supported on the upper surface of the support base by inserting the dowel pin implanted in the fixing plate into the insertion hole of the support base. In this support state, the columnar protrusion of the support base and the columnar recess of the fixing plate are connected to each other. Then, a predetermined part of the tooth profile model is cut together with the fixing plate, and the cut fixing plate is supported on the upper surface of the support base, and a necessary work (for example, a crown prosthesis) is performed using the cut tooth profile model. Etc.) is performed. At this time, since the columnar recess of the cut fixing plate and the columnar protrusion of the support base are connected to each other, rotation of the cut fixing plate relative to the support base is suppressed.

特開２００９−１００８８０号公報JP 2009-100080 A

しかしながら、上述のような従来の歯科技工用作業模型では、切断した固定用プレートと支持基台との水平方向の連結強度が十分とは言えない。そのため、作業時に歯形模型に大きな力が加わると、切断した固定用プレートが支持基台に対してぐらつくおそれがあり、安定した作業を行うことができないという問題がある。   However, in the conventional dental technician work model as described above, the horizontal connection strength between the cut fixing plate and the support base is not sufficient. Therefore, if a large force is applied to the tooth model during the work, there is a possibility that the cut fixing plate may wobble with respect to the support base, and a stable work cannot be performed.

本発明の目的は、固定用プレートと支持基台との水平方向の連結強度を高めることができる歯科技工用作業模型を提供することである。   The objective of this invention is providing the working model for dental technicians which can raise the connection strength of the horizontal direction of a fixing plate and a support base.

また、本発明の他の目的は、固定用プレートと支持基台本体との水平方向の連結強度を高めることができる支持基台を提供することである。   Another object of the present invention is to provide a support base that can increase the horizontal connection strength between the fixing plate and the support base body.

本発明の請求項１に記載の歯科技工用作業模型では、歯形模型が固定される石膏から形成された固定用プレートと、前記固定用プレートに植設された長手方向に垂直な断面の形状が丸形のダウエルピンと、前記固定用プレートを支持するための合成樹脂から形成された支持基台と、を備えた歯科技工用作業模型であって、
前記支持基台の上面には、前記ダウエルピンが挿入される長手方向に垂直な断面の形状が丸形の挿入孔が設けられ、前記支持基台の上面における周縁の少なくとも一部には、上方に突出する連結用突部が設けられ、前記連結用突部の内側部には複数の第１突状部が間隔を置いて設けられ、前記複数の第１突状部の間にはそれぞれ第１凹状部が規定され、また前記固定用プレートの下面における周縁の少なくとも一部には、上方に延びる連結用凹部が設けられ、前記連結用凹部の内側部には複数の第２突状部が間隔を置いて設けられ、前記複数の第２突状部の間にはそれぞれ第２凹状部が規定されており、
前記連結用突部及び前記連結用凹部はそれぞれ一対設けられ、前記一対の連結用突部は、前記支持基台の上面における相互に対向する両側縁に設けられ、これに対応して、前記一対の連結用凹部は、前記固定用プレートの下面における相互に対向する両側縁に設けられており、
前記連結用突部の前記第１突状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、前記連結用凹部の前記第２凹状部には、内側に向けて下り傾斜する傾斜面が形成されており、
前記連結用突部の前記第１凹状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、前記連結用凹部の前記第２突状部には、内側に向けて下り傾斜する傾斜面が形成されていて、
前記第１突状部に形成された傾斜面の鉛直方向に対する傾斜角度は４０〜６０°であり、また前記第１凹状部に形成された傾斜面の鉛直方向に対する傾斜角度は５〜１５°であり、
また、前記歯形模型は全顎タイプであり、これに対応して、前記固定用プレート及び前記支持基台の上面はそれぞれ弧状に延びており、
前記一対の連結用突部は、前記支持基台の上面における外周縁及び内周縁に設けられ、また前記支持基台の上面における内周縁よりも内側に離れた部位には連結補助用突部が設けられ、これに対応して、前記一対の連結用凹部は、前記固定用プレートの下面における外周縁及び内周縁に設けられ、また前記固定用プレートの下面における内周縁よりも内側に離れた部位には連結補助用凹部が設けられ、
前記連結補助用突部及び前記連結補助用凹部はそれぞれ複数設けられ、前記複数の連結補助用突部は、前記一対の連結用突部の間にこれらに略平行に間隔を置いて配置され、前記複数の連結補助用凹部は、前記一対の連結用凹部の間にこれらに略平行に間隔を置いて配置されており、
前記固定用プレートが前記支持基台の上面に支持されると、前記連結用突部の前記第１突状部及び前記第１凹状部はそれぞれ、前記連結用凹部の前記第２凹状部及び前記第２突状部と相互に連結され、且つ、前記連結補助用突部と前記連結補助用凹部とが相互に連結されることを特徴とする歯科技工用作業模型。
In the dental technician working model according to claim 1 of the present invention, the fixing plate formed of gypsum on which the tooth model is fixed, and the shape of the cross section perpendicular to the longitudinal direction implanted in the fixing plate. A dental technician working model comprising a round dowel pin and a support base formed of a synthetic resin for supporting the fixing plate,
An insertion hole having a round cross-sectional shape perpendicular to the longitudinal direction in which the dowel pin is inserted is provided on the upper surface of the support base, and at least a part of the peripheral edge on the upper surface of the support base is provided upward. Protruding connecting protrusions are provided, and a plurality of first protrusions are provided at intervals on the inner side of the connecting protrusions, and a first is provided between the plurality of first protrusions. A concave portion is defined, and at least a part of the peripheral edge of the lower surface of the fixing plate is provided with a connecting concave portion extending upward, and a plurality of second projecting portions are spaced apart on the inner side of the coupling concave portion. And a second concave portion is defined between the plurality of second projecting portions,
A pair of the connecting protrusions and the connecting recesses are provided, and the pair of connecting protrusions are provided on opposite side edges on the upper surface of the support base, and correspondingly, The connecting recesses are provided on opposite side edges on the lower surface of the fixing plate,
The first projecting portion of the connecting projection is formed with an inclined surface that slopes downward toward the inside, and correspondingly, the second recessed portion of the connecting recess is directed inward. An inclined surface that slopes downward is formed,
The first concave portion of the connecting protrusion has an inclined surface that inclines downward toward the inside, and correspondingly, the second protruding portion of the connecting recess faces inward. An inclined surface that is inclined downward is formed,
The inclination angle with respect to the vertical direction of the inclined surface formed on the first protrusion is 40 to 60 °, and the inclination angle with respect to the vertical direction of the inclined surface formed on the first concave portion is 5 to 15 °. Yes,
Further, the tooth model is a full jaw type, and correspondingly, the fixing plate and the upper surface of the support base each extend in an arc shape,
The pair of connecting protrusions are provided on an outer peripheral edge and an inner peripheral edge on the upper surface of the support base, and a connection auxiliary protrusion is provided at a position farther inward than the inner peripheral edge on the upper surface of the support base. Correspondingly, the pair of connecting recesses are provided on the outer peripheral edge and the inner peripheral edge on the lower surface of the fixing plate, and are located on the inner side of the inner peripheral edge on the lower surface of the fixing plate. Is provided with a recess for connection assistance,
A plurality of the connection assisting protrusions and the plurality of connection assisting recesses are provided, and the plurality of connection assisting protrusions are disposed between the pair of connection protrusions and spaced substantially parallel to each other, The plurality of connection auxiliary recesses are disposed between the pair of connection recesses and spaced substantially parallel to each other,
When the fixing plate is supported on the upper surface of the support base, the first protruding portion and the first recessed portion of the connecting protrusion are respectively the second recessed portion and the connecting recess of the connecting recess. A working model for dental technician, wherein the working model is connected to the second projecting portion and the connecting assisting projection and the connecting assist recess are connected to each other.

また、本発明の請求項２に記載の歯科技工用作業模型では、前記固定用プレートは、前記ダウエルピンが植設された第１プレート部と、前記ダウエルピンが植設されない第２プレート部と、を備え、
前記第１プレート部が支持される部位においては、前記連結用突部の前記第１突状部及び前記連結用凹部の前記第２凹状部にはそれぞれ、内側に向けて下り傾斜する傾斜面が形成され、また前記第２プレート部が支持される部位においては、前記連結用突部の前記第１突状部及び前記連結用凹部の前記第２凹状部にはそれぞれ、内側に向けて上り傾斜する傾斜面又は鉛直方向に延びる鉛直面が形成されていることを特徴とする。
In the dental technician working model according to claim 2 of the present invention, the fixing plate includes a first plate portion in which the dowel pin is implanted, and a second plate portion in which the dowel pin is not implanted. Prepared,
In the portion where the first plate portion is supported, the first protruding portion of the connecting protrusion and the second recessed portion of the connecting recess each have inclined surfaces that are inclined downward toward the inside. In the portion where the second plate portion is formed and supported, the first projecting portion of the connecting projection and the second recessed portion of the connecting recess are inclined upward inward, respectively. An inclined surface or a vertical surface extending in the vertical direction is formed.

また、本発明の請求項３に記載の歯科技工用作業模型では、前記連結用突部の突出高さは、０．５〜５．０ｍｍであることを特徴とする。
In the dental technician work model according to claim 3 of the present invention, the projecting height of the connecting projection is 0.5 to 5.0 mm.

本発明の請求項１に記載の歯科技工用作業模型によれば、支持基台に設けられた連結用突部の内側部には、第１突状部及び第１凹状部が交互に複数設けられ、また固定用プレートに設けられた連結用凹部の内側部には、第２突状部及び第２凹状部が交互に複数設けられている。固定用プレートが支持基台の上面に支持されると、連結用突部の第１突状部及び第１凹状部はそれぞれ、連結用凹部の第２凹状部及び第２突状部と相互に連結されるので、固定用プレートと支持基台との水平方向の連結強度を高めることができる。これにより、歯形模型を用いた所要の作業を行う際に、固定用プレートの支持基台に対する回転やぐらつき等を確実に防止することができ、作業効率を高めることができる。   According to the working model for dental technician according to claim 1 of the present invention, a plurality of first protrusions and first recesses are alternately provided on the inner side of the connection protrusion provided on the support base. In addition, a plurality of second protrusions and second recesses are alternately provided on the inner side of the connection recess provided on the fixing plate. When the fixing plate is supported on the upper surface of the support base, the first projecting portion and the first projecting portion of the connecting projection are mutually connected to the second projecting portion and the second projecting portion of the connecting recess. Since it is connected, the horizontal connection strength between the fixing plate and the support base can be increased. Thereby, when performing the required operation | work using a tooth model, rotation, wobble, etc. with respect to the support base of a fixing plate can be prevented reliably, and work efficiency can be improved.

また、本発明の請求項２に記載の歯科技工用作業模型によれば、一対の連結用突部は、支持基台の上面における相互に対向する両側縁に設けられ、これに対応して、一対の連結用凹部は、固定用プレートの下面における相互に対向する両側縁に設けられている。これにより、歯科技工用作業模型の製造工程（具体的には、後述するプレート成型工程）において、注入した石膏が支持基台の上面の両端部（即ち、一対の連結用突部の設けられていない部位）に流れるようになり、石膏を支持基台の上面にほぼ均一に注入することができ、固定用プレートの成型を効率良く行うことができる。   Further, according to the working model for dental technician according to claim 2 of the present invention, the pair of connecting projections are provided on opposite side edges on the upper surface of the support base, and correspondingly, The pair of connecting recesses are provided on opposite side edges on the lower surface of the fixing plate. As a result, in the manufacturing process of the dental technician work model (specifically, a plate molding process described later), the injected gypsum is provided with both ends of the upper surface of the support base (that is, a pair of connecting projections). The gypsum can be injected almost uniformly onto the upper surface of the support base, and the fixing plate can be efficiently molded.

また、本発明の請求項３に記載の歯科技工用作業模型によれば、支持基台の上面における内周縁よりも内側に離れた部位には連結補助用突部が設けられ、これに対応して、固定用プレートの下面における内周縁よりも内側に離れた部位には連結補助用凹部が設けられているので、歯科技工用作業模型の製造工程（具体的には、後述する切断工程）において固定用プレートを切断した際に、連結補助用突部と連結補助用凹部とが相互に連結されることにより、切断した固定用プレートと支持基台との水平方向の連結強度を高く保つことができる。   Further, according to the working model for dental technician according to claim 3 of the present invention, a connection assisting protrusion is provided at a position farther inward than the inner peripheral edge on the upper surface of the support base. In the manufacturing process of the dental work model (specifically, a cutting process described later), a connection assisting recess is provided in a part of the lower surface of the fixing plate that is further away from the inner peripheral edge. When the fixing plate is cut, the connection auxiliary protrusion and the connection auxiliary recess are connected to each other, so that the horizontal connection strength between the cut fixing plate and the support base can be kept high. it can.

また、本発明の請求項４に記載の歯科技工用作業模型によれば、複数の連結補助用突部は、一対の連結用突部の間にこれらに略平行に間隔を置いて配置され、複数の連結補助用凹部は、一対の連結用凹部の間にこれらに略平行に間隔を置いて配置されているので、複数の連結補助用突部と複数の連結補助用凹部とが相互に連結されることにより、切断工程において切断した固定用プレートと支持基台との水平方向の連結強度をより一層高く保つことができる。   Further, according to the dental technician work model according to claim 4 of the present invention, the plurality of connection assisting protrusions are arranged between the pair of connection protrusions and spaced substantially parallel to them, Since the plurality of connection auxiliary recesses are disposed between the pair of connection recesses and spaced substantially parallel to each other, the plurality of connection auxiliary protrusions and the plurality of connection auxiliary recesses are connected to each other. By doing so, the horizontal connection strength between the fixing plate and the support base cut in the cutting step can be kept higher.

また、本発明の請求項５に記載の歯科技工用作業模型によれば、支持基台の上面における一側縁よりも内側に離れた部位には連結補助用突部が設けられ、これに対応して、固定用プレートの下面における一側縁よりも内側に離れた部位には連結補助用凹部が設けられているので、固定用プレートが支持基台の上面に支持されると、連結用突部の第１突状部及び第１凹状部がそれぞれ連結用凹部の第２凹状部及び第２突状部と相互に連結されるとともに、連結補助用突部と連結補助用凹部とが相互に連結される。これにより、固定用プレートと支持基台との水平方向の連結強度をより高めることができる。   Further, according to the dental technician work model of claim 5 of the present invention, the connection assisting protrusion is provided at a portion spaced inward from the one side edge on the upper surface of the support base. In addition, since a connection auxiliary recess is provided in a portion of the lower surface of the fixing plate that is further away from the one side edge, when the fixing plate is supported on the upper surface of the support base, the connection protrusion The first projecting portion and the first recessed portion are connected to the second recessed portion and the second projecting portion of the coupling recess, respectively, and the connection assisting projection and the connection assisting recess are mutually connected. Connected. Thereby, the horizontal connection strength between the fixing plate and the support base can be further increased.

また、本発明の請求項６に記載の歯科技工用作業模型によれば、複数の連結補助用突部は、一対の連結用突部の間にこれらに略平行に間隔を置いて配置され、複数の連結補助用凹部は、一対の連結用凹部の間にこれらに略平行に間隔を置いて配置されているので、複数の連結補助用突部と複数の連結補助用凹部とが相互に連結されることにより、固定用プレートと支持基台との水平方向の連結強度をより一層高く保つことができる。   Further, according to the working model for dental technician according to claim 6 of the present invention, the plurality of connection assisting protrusions are disposed between the pair of connection protrusions and spaced substantially parallel to each other, Since the plurality of connection auxiliary recesses are disposed between the pair of connection recesses and spaced substantially parallel to each other, the plurality of connection auxiliary protrusions and the plurality of connection auxiliary recesses are connected to each other. By doing so, the horizontal connection strength between the fixing plate and the support base can be kept even higher.

また、本発明の請求項７に記載の歯科技工用作業模型によれば、連結用突部の第１突状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、連結用凹部の第２凹状部には、内側に向けて下り傾斜する傾斜面が形成されているので、固定用プレートと支持基台との鉛直方向の連結強度が比較的低くなり、固定用プレートの支持基台に対する着脱を容易に行うことができ、作業性を高めることができる。また、第１突状部の傾斜面と第２凹状部の傾斜面とが相互に案内されることにより、固定用プレートの支持基台に対する位置決めを容易に且つ確実に行うことができる。   According to the dental technician work model according to claim 7 of the present invention, the first protrusion of the connecting protrusion is formed with an inclined surface that is inclined downward toward the inside. In addition, since the second concave portion of the connecting concave portion is formed with an inclined surface that inclines downward toward the inside, the vertical connection strength between the fixing plate and the support base is relatively low, and the fixing is fixed. The plate can be easily attached to and detached from the support base, and workability can be improved. Further, the inclined surface of the first projecting portion and the inclined surface of the second concave portion are guided to each other, so that the positioning of the fixing plate with respect to the support base can be easily and reliably performed.

また、本発明の請求項８に記載の歯科技工用作業模型によれば、連結用突部の第１凹状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、連結用凹部の第２突状部には、内側に向けて下り傾斜する傾斜面が形成されているので、固定用プレートの支持基台に対する着脱をより容易に行うことができ、作業性をより一層高めることができる。また、第１凹状部の傾斜面と第２突状部の傾斜面とが相互に案内されることにより、固定用プレートの支持基台に対する位置決めをより容易に且つより確実に行うことができる。   Further, according to the dental technician work model according to claim 8 of the present invention, the first concave portion of the connecting projection is formed with an inclined surface that inclines downward toward the inside. The second protrusion of the connecting recess has an inclined surface that is inclined downward toward the inside, so that the fixing plate can be easily attached to and detached from the support base, and workability is improved. It can be further increased. Further, the inclined surface of the first concave portion and the inclined surface of the second projecting portion are guided to each other, so that the positioning of the fixing plate with respect to the support base can be performed more easily and reliably.

また、本発明の請求項９に記載の歯科技工用作業模型によれば、第１突状部に形成された傾斜面の鉛直方向に対する傾斜角度は４０〜６０°であり、また第１凹状部に形成された傾斜面の鉛直方向に対する傾斜角度は５〜１５°であるので、固定用プレートを石膏で形成した場合における第２突状部及び第２凹状部の割れを抑制することができるとともに、固定用プレートと支持基台との鉛直方向の連結強度を適度に保つことができる。   Further, according to the dental technician work model of claim 9 of the present invention, the inclination angle of the inclined surface formed on the first projecting portion with respect to the vertical direction is 40 to 60 °, and the first recessed portion. Since the inclination angle with respect to the vertical direction of the inclined surface formed at 5 to 15 °, it is possible to suppress cracking of the second projecting portion and the second recessed portion when the fixing plate is formed of gypsum. The vertical connection strength between the fixing plate and the support base can be kept moderate.

また、本発明の請求項１０に記載の歯科技工用作業模型によれば、ダウエルピンが植設された第１プレート部が支持される部位においては、連結用突部の第１突状部及び連結用凹部の第２凹状部にはそれぞれ、内側に向けて下り傾斜する傾斜面が形成され、またダウエルピンが植設されない第２プレート部が支持される部位においては、連結用突部の第１突状部及び連結用凹部の第２凹状部にはそれぞれ、内側に向けて上り傾斜する傾斜面又は鉛直方向に延びる鉛直面が形成されているので、第１プレート部が支持される部位においては、第１プレート部と支持基台との鉛直方向の連結強度が比較的低くなり、また第２プレート部が支持される部位においては、第２プレート部と支持基台との鉛直方向の連結強度が比較的高くなる。一般に、歯形模型を用いた所要の作業を行う際には、ダウエルピンが植設された第１プレート部は支持基台に対して着脱して使用するが、ダウエルピンが植設されない第２プレート部は、支持基台より取り外すことなく支持基台に支持させたままで使用する。従って、上述のような構成を具備することにより、第１プレート部の支持基台に対する着脱を容易に行うことができるとともに、作業時における第２プレート部の支持基台からの落下を抑制することができ、歯形模型を用いた所要の作業を効率良く行うことができる。   Further, according to the working model for dental technician according to claim 10 of the present invention, in the portion where the first plate portion in which the dowel pin is implanted is supported, the first projecting portion of the coupling projection and the coupling Each of the second concave portions of the concave portion is formed with an inclined surface that inclines downward toward the inside, and the first protrusion of the connecting protrusion at the portion where the second plate portion where the dowel pin is not implanted is supported. In the part where the first plate part is supported, the inclined part or the vertical surface extending in the vertical direction is formed in the second concave part of the shape part and the connecting concave part, respectively. The vertical connection strength between the first plate portion and the support base is relatively low, and in the portion where the second plate portion is supported, the vertical connection strength between the second plate portion and the support base is low. Relatively high. In general, when performing the required work using the tooth model, the first plate part in which the dowel pin is implanted is used by being attached to and detached from the support base, but the second plate part in which the dowel pin is not implanted is used. It is used while being supported on the support base without being removed from the support base. Therefore, by having the above-described configuration, the first plate portion can be easily attached to and detached from the support base, and the second plate portion can be prevented from dropping from the support base during operation. The required work using the tooth profile model can be performed efficiently.

また、本発明の請求項１１に記載の歯科技工用作業模型によれば、連結用突部の突出高さは、０．５〜５．０ｍｍであるので、固定用プレートと支持基台との水平方向の連結強度を十分に確保することができるとともに、歯科技工用作業模型の製造工程（具体的には、後述する切断工程）における切断工具による連結用突部の切り込み量が少なくて済み、作業効率を高めることができる。   According to the dental technician work model of claim 11 of the present invention, since the protrusion height of the connecting protrusion is 0.5 to 5.0 mm, the fixing plate and the support base The horizontal connection strength can be sufficiently secured, and the cutting amount of the connecting projection by the cutting tool in the manufacturing process of the dental technician work model (specifically, the cutting process described later) can be reduced. Work efficiency can be increased.

また、本発明の請求項１２に記載の支持基台によれば、支持基台の上面における相互に対向する両側縁にはそれぞれ上方に突出する連結用突部が設けられ、固定用プレートの下面における相互に対向する両側縁にはそれぞれ上方に延びる連結用凹部が設けられている。また、支持基台の上面における一対の連結用突部の間には連結補助用突部が設けられ、固定用プレートの下面における一対の連結用凹部の間には連結補助用凹部が設けられている。固定用プレートが支持基台の上面に支持されると、一対の連結用突部と一対の連結用凹部とが相互に連結されるとともに、連結補助用突部と連結補助用凹部とが相互に連結されるので、固定用プレートと支持基台との水平方向の連結強度を高めることができる。これにより、歯形模型を用いた所要の作業を行う際に、固定用プレートの支持基台に対する回転やぐらつき等を確実に防止することができ、作業効率を高めることができる。   Further, according to the support base of the twelfth aspect of the present invention, on both side edges facing each other on the upper surface of the support base, there are provided connecting protrusions protruding upward, respectively, and the lower surface of the fixing plate. In both side edges facing each other, there are provided connecting concave portions extending upward. Further, a connection assisting projection is provided between the pair of connection projections on the upper surface of the support base, and a connection assisting recess is provided between the pair of connection recesses on the lower surface of the fixing plate. Yes. When the fixing plate is supported on the upper surface of the support base, the pair of connection protrusions and the pair of connection recesses are connected to each other, and the connection auxiliary protrusions and the connection auxiliary recesses are connected to each other. Since it is connected, the horizontal connection strength between the fixing plate and the support base can be increased. Thereby, when performing the required operation | work using a tooth model, rotation, wobble, etc. with respect to the support base of a fixing plate can be prevented reliably, and work efficiency can be improved.

また、本発明の請求項１３に記載の支持基台によれば、支持基台本体に設けられた連結用突部の内側部には、第１突状部及び第１凹状部が交互に複数設けられている。固定用プレートが支持基台本体の上面に支持されると、支持基台本体の連結用突部と固定用プレートに設けられた連結用凹部とが相互に連結され、これにより連結用突部の第１突状部及び第１凹状部はそれぞれ、連結用凹部の内側部に交互に複数設けられた第２凹状部及び第２突状部と相互に連結されるので、固定用プレートと支持基台本体との水平方向の連結強度を高めることができる。これにより、歯形模型を用いた所要の作業を行う際に、固定用プレートの支持基台本体に対する回転やぐらつき等を確実に防止することができ、作業効率を高めることができる。   According to the support base of the thirteenth aspect of the present invention, a plurality of first protrusions and first recesses are alternately formed on the inner side of the connection protrusion provided on the support base body. Is provided. When the fixing plate is supported on the upper surface of the support base body, the connection protrusions of the support base body and the connection recesses provided in the fixing plate are connected to each other. Since the first projecting portion and the first recessed portion are connected to the second recessed portion and the second projecting portion, which are alternately provided in the inner portion of the connecting recess, respectively, the fixing plate and the support base The connection strength in the horizontal direction with the base body can be increased. Thereby, when performing the required operation | work using a tooth model, rotation, wobble, etc. with respect to the support base main body of a fixing plate can be prevented reliably, and work efficiency can be improved.

本発明の第１の実施形態による歯科技工用作業模型を示す斜視図である。It is a perspective view which shows the working model for dental technicians by the 1st Embodiment of this invention. 図１の歯科技工用作業模型を示す分解斜視図である。It is a disassembled perspective view which shows the working model for dental technicians of FIG. 図２の連結用突部の一部を拡大して示す部分拡大斜視図である。FIG. 3 is a partially enlarged perspective view showing a part of the connecting protrusion of FIG. 2 in an enlarged manner. （ａ）は、支持基台の上面を示す図であり、（ｂ）は、固定用プレートの下面を示す図である。(A) is a figure which shows the upper surface of a support base, (b) is a figure which shows the lower surface of the plate for fixation. 図１中のＡ−Ａ線による歯科技工用作業模型の断面図である。It is sectional drawing of the working model for dental technicians by the AA line in FIG. 支持基台の上部に成型用基枠を装着する前の状態を示す斜視図である。It is a perspective view which shows the state before mounting | wearing with the base frame for shaping | molding on the upper part of a support base. 支持基台の上部に成型用基枠を装着した状態を示す断面図である。It is sectional drawing which shows the state which mounted | wore the base frame for shaping | molding on the upper part of a support base. 注入空間内に石膏を注入した状態を示す断面図である。It is sectional drawing which shows the state which injected the gypsum in the injection | pouring space. 本発明の第２の実施形態による歯科技工用作業模型の支持基台の上面を示す図である。It is a figure which shows the upper surface of the support base of the working model for dental technicians by the 2nd Embodiment of this invention. 図９の連結用突部の一部を拡大して示す部分拡大斜視図である。FIG. 10 is a partially enlarged perspective view showing a part of the connecting protrusion of FIG. 9 in an enlarged manner. 本発明の第３の実施形態による歯科技工用作業模型の連結用突部の一部を拡大して示す部分拡大斜視図である。It is a partial expansion perspective view which expands and shows a part of connection projection part of the working model for dental technicians by a 3rd embodiment of the present invention. 本発明の第４の実施形態による歯科技工用作業模型を示す分解斜視図である。It is a disassembled perspective view which shows the working model for dental technicians by the 4th Embodiment of this invention. （ａ）は、図１２の支持基台の上面を示す図であり、（ｂ）は、その固定用プレートの下面を示す図である。(A) is a figure which shows the upper surface of the support base of FIG. 12, (b) is a figure which shows the lower surface of the plate for fixation. （ａ）は、本発明の第５の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、（ｂ）は、その固定用プレートの下面を示す図である。(A) is a figure which shows the upper surface of the support base of the working model for dental technicians by the 5th Embodiment of this invention, (b) is a figure which shows the lower surface of the plate for fixation. （ａ）は、本発明の第６の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、（ｂ）は、その固定用プレートの下面を示す図である。(A) is a figure which shows the upper surface of the support base of the working model for dental technicians by the 6th Embodiment of this invention, (b) is a figure which shows the lower surface of the plate for fixation. （ａ）は、図１５の歯科技工用作業模型の支持基台の上面の変形例を示す図であり、（ｂ）は、その固定用プレートの下面の変形例を示す図である。(A) is a figure which shows the modification of the upper surface of the support base of the working model for dental technicians of FIG. 15, (b) is a figure which shows the modification of the lower surface of the plate for fixation. （ａ）は、本発明の第７の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、（ｂ）は、その固定用プレートの下面を示す図である。(A) is a figure which shows the upper surface of the support base of the working model for dental technicians by the 7th Embodiment of this invention, (b) is a figure which shows the lower surface of the plate for fixation.

以下、添付図面を参照して、本発明に従う歯科技工用作業模型及びこれに用いる支持基台の各種実施形態について説明する。
［第１の実施形態］
まず、図１〜図８を参照して、第１の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図１は、本発明の第１の実施形態による歯科技工用作業模型を示す斜視図であり、図２は、図１の歯科技工用作業模型を示す分解斜視図であり、図３は、図２の連結用突部の一部を拡大して示す部分拡大斜視図であり、図４（ａ）は、支持基台の上面を示す図であり、図４（ｂ）は、固定用プレートの下面を示す図であり、図５は、図１中のＡ−Ａ線による歯科技工用作業模型の断面図であり、図６は、支持基台の上部に成型用基枠を装着する前の状態を示す斜視図であり、図７は、支持基台の上部に成型用基枠を装着した状態を示す断面図であり、図８は、注入空間内に石膏を注入した状態を示す断面図である。 DESCRIPTION OF EMBODIMENTS Hereinafter, various embodiments of a dental technician work model and a support base used therefor according to the present invention will be described with reference to the accompanying drawings.
[First Embodiment]
First, with reference to FIGS. 1-8, the working model for dental technicians of 1st Embodiment and the support base used for this are demonstrated. FIG. 1 is a perspective view showing a dental technician work model according to the first embodiment of the present invention, FIG. 2 is an exploded perspective view showing the dental technician work model of FIG. 1, and FIG. FIG. 4A is a partially enlarged perspective view showing a part of the connection protrusion of FIG. 2, FIG. 4A is a view showing the upper surface of the support base, and FIG. FIG. 5 is a cross-sectional view of the dental technician work model taken along line AA in FIG. 1, and FIG. 6 shows a state before the molding base frame is mounted on the upper part of the support base. FIG. 7 is a cross-sectional view showing a state where a molding base frame is mounted on the upper part of the support base, and FIG. 8 is a cross-sectional view showing a state where gypsum is injected into the injection space. It is.

図１及び図２を参照して、図示の歯科技工用作業模型２は、歯形模型４が固定される固定用プレート６と、固定用プレート６に植設された５本のダウエルピン８と、固定用プレート６を支持するための支持基台１０と、を備えている。   Referring to FIGS. 1 and 2, the illustrated dental technician work model 2 includes a fixing plate 6 to which a tooth model 4 is fixed, five dowel pins 8 implanted in the fixing plate 6, and a fixing plate 6. And a support base 10 for supporting the working plate 6.

支持基台１０は支持基台本体１２を備え、この支持基台本体１２は、例えばポリエチレン樹脂やポリプロピレン樹脂、ナイロン樹脂、ウレタン樹脂などの合成樹脂から形成されている。この支持基台本体１２は、横長且つ筒状の周側壁１４と、周側壁１４の上側を覆う横長の上壁１６と、を有している。上壁１６の上面（支持基台１０の上面を規定する）には、その長手方向（図１及び図２において左下から右上の方向）に間隔を置いて５個の挿入孔１８が設けられている。周側壁１４の内側に形成された空間２０には、各挿入孔１８に対応して上壁１６の下面から下方に延びる筒状突部２２が設けられており、各挿入孔１８はこの筒状突部２２の内部を貫通して設けられている（図５参照）。なお、各挿入孔１８は、筒状突部２２の上端部から下端部に向けて内径が漸減するテーパ状に形成されている。 The support base 10 includes a support base main body 12, and the support base main body 12 is formed of a synthetic resin such as polyethylene resin, polypropylene resin, nylon resin, or urethane resin. The support base main body 12 has a horizontally long and cylindrical peripheral side wall 14 and a horizontally long upper wall 16 that covers the upper side of the peripheral side wall 14. The upper surface of the upper wall 16 (which defines the upper surface of the support base 10) is provided with five insertion holes 18 spaced in the longitudinal direction (the direction from the lower left to the upper right in FIGS. 1 and 2). Yes. A cylindrical protrusion 22 extending downward from the lower surface of the upper wall 16 corresponding to each insertion hole 18 is provided in the space 20 formed inside the peripheral side wall 14, and each insertion hole 18 is formed in this cylindrical shape. It is provided through the inside of the protrusion 22 (see FIG. 5). Each insertion hole 18 is formed in a tapered shape whose inner diameter gradually decreases from the upper end to the lower end of the cylindrical protrusion 22 .

また、上壁１６の上面における相互に対向する両側縁には一対の連結用突部２４が設けられている。一対の連結用突部２４はそれぞれ、上方に突出するとともに上壁１６の長手方向に延びている。なお、上壁１６の両端部においては、連結用突部２４は設けられていない。連結用突部２４の上壁１６からの突出高さＨは、約１．５ｍｍに設定されている。各連結用突部２４の内側部には複数の第１突状部２６が間隔を置いて設けられ、また複数の第１突状部２６の間にはそれぞれ第１凹状部２８が規定されている（図３及び図４（ａ）参照）。第１突状部２６には、内側に向けて下り傾斜する傾斜面３０が形成され、また第１凹状部２８には、内側に向けて下り傾斜する傾斜面３２が形成されている（図５参照）。第１突状部２６に形成された傾斜面３０の鉛直方向に対する傾斜角度θ１（例えば約４５°）は、第１凹状部２８に形成された傾斜面３２の鉛直方向に対する傾斜角度θ２（例えば約１０°）よりも大きく構成されており、このように構成することによって、連結用突部２４の樹脂成型を容易に行うことができる。   A pair of connecting projections 24 are provided on opposite side edges of the upper surface of the upper wall 16. Each of the pair of connecting protrusions 24 protrudes upward and extends in the longitudinal direction of the upper wall 16. Note that the connecting projections 24 are not provided at both ends of the upper wall 16. The protrusion height H from the upper wall 16 of the connecting protrusion 24 is set to about 1.5 mm. A plurality of first protrusions 26 are provided at intervals on the inner side of each connecting protrusion 24, and a first recess 28 is defined between the plurality of first protrusions 26. (See FIG. 3 and FIG. 4A). The first protrusion 26 is formed with an inclined surface 30 inclined downward toward the inside, and the first concave portion 28 is formed with an inclined surface 32 inclined downward toward the inside (FIG. 5). reference). An inclination angle θ1 (for example, about 45 °) with respect to the vertical direction of the inclined surface 30 formed on the first protrusion 26 is an inclination angle θ2 (for example, about about 45 °) with respect to the vertical direction of the inclined surface 32 formed on the first concave portion 28. 10 °), and by configuring in this way, the resin molding of the connecting projection 24 can be easily performed.

また、周側壁１４の外周面には、挿入孔１８に対応して（換言すると、固定用プレート６のダウエルピン８に対応して）位置決め用突部３４が設けられ、この位置決め用突部３４は、挿入孔１８を挟んでそれらの両側にそれぞれ配設されている。 In addition, a positioning projection 34 is provided on the outer peripheral surface of the peripheral side wall 14 corresponding to the insertion hole 18 (in other words, corresponding to the dowel pin 8 of the fixing plate 6). They are respectively disposed on their both sides of the interpolation in hole 18.

固定用プレート６は石膏から形成され、支持基台本体１２の上壁１６の形状に対応した横長の形状を有している。この固定用プレート６には、支持基台本体１２の各挿入孔１８に対応して５本のダウエルピン８が植設されている。ダウエルピン８は、上述のように各挿入孔１８がテーパ状に形成されていることに対応して、その基端部から先端部に向けて外径が漸減するテーパ状に形成されている。また、固定用プレート６に埋設されるダウエルピン８の基端部には、固定用プレート６に対する固定強度を高めるためにローレット加工が施されている。   The fixing plate 6 is made of gypsum and has a horizontally long shape corresponding to the shape of the upper wall 16 of the support base body 12. In the fixing plate 6, five dowel pins 8 are implanted so as to correspond to the respective insertion holes 18 of the support base body 12. The dowel pin 8 is formed in a tapered shape whose outer diameter gradually decreases from the proximal end portion toward the distal end portion corresponding to the insertion holes 18 being formed in a tapered shape as described above. Further, the base end portion of the dowel pin 8 embedded in the fixing plate 6 is knurled to increase the fixing strength with respect to the fixing plate 6.

また、固定用プレート６の下面（即ち、ダウエルピン８が突出する側の面）における相互に対向する両側縁には、支持基台本体１２の一対の連結用突部２４に対応して、一対の連結用凹部３６が設けられている。一対の連結用凹部３６はそれぞれ、上方に延びるとともに固定用プレート６の長手方向に延びている。各連結用凹部３６の内側部には複数の第２突状部３８が間隔を置いて設けられ、また複数の第２突状部３８の間にはそれぞれ第２凹状部４０が規定されている（図４（ｂ）参照）。第２突状部３８及び第２凹状部４０はそれぞれ、連結用突部２４の第１凹状部２８及び第１突状部２６の各形状に対応した形状を有している。これにより、第２突状部３８には、第１凹状部２８の傾斜面３２に対応して、内側に向けて下り傾斜する傾斜面４２が形成され、また第２凹状部４０には、第１突状部２６の傾斜面３０に対応して、内側に向けて下り傾斜する傾斜面４４が形成されている。 In addition, on both side edges facing each other on the lower surface of the fixing plate 6 (that is, the surface on which the dowel pins 8 protrude), a pair of connecting projections 24 of the support base body 12 is provided. A connecting recess 36 is provided. Each of the pair of connecting recesses 36 extends upward and extends in the longitudinal direction of the fixing plate 6. A plurality of second protrusions 38 are provided at intervals on the inner side of each connection recess 36, and a second recess 40 is defined between the plurality of second protrusions 38. (See FIG. 4 (b)). The second protruding portion 38 and the second recessed portion 40 have shapes corresponding to the shapes of the first recessed portion 28 and the first protruding portion 26 of the connecting protrusion 24, respectively. As a result, the second projecting portion 38 is formed with an inclined surface 42 that inclines downward toward the inside corresponding to the inclined surface 32 of the first concave portion 28, and the second concave portion 40 Corresponding to the inclined surface 30 of the one protruding portion 26, an inclined surface 44 that is inclined downward toward the inside is formed.

固定用プレート６の上面には、石膏から形成された歯形模型４（本実施形態では、部分タイプのもの）が固定されている。この固定用プレート６は、ダウエルピン８を対応する挿入孔１８に着脱自在に挿入することにより、支持基台本体１２の上壁１６の上面に着脱自在に支持される。この支持状態では、ダウエルピン８の先端部は筒状突部２２の下端部から下方に幾分突出され、また、連結用突部２４の第１突状部２６及び第１凹状部２８はそれぞれ、連結用凹部３６の第２凹状部４０及び第２突状部３８と相互に着脱自在に連結される（図５参照）。   On the upper surface of the fixing plate 6, a tooth model 4 made of gypsum (in this embodiment, a partial type) is fixed. The fixing plate 6 is detachably supported on the upper surface of the upper wall 16 of the support base body 12 by inserting the dowel pins 8 into the corresponding insertion holes 18 in a detachable manner. In this support state, the tip of the dowel pin 8 protrudes somewhat downward from the lower end of the cylindrical protrusion 22, and the first protrusion 26 and the first recess 28 of the connecting protrusion 24 are respectively The second recess 40 and the second protrusion 38 of the connecting recess 36 are detachably connected to each other (see FIG. 5).

次に、図６〜図８を参照して、上述した歯科技工用作業模型２の製造方法について説明する。まず、歯型（図示せず）に石膏を流し込んで歯形模型４を製作し、また、合成樹脂による射出成型によって支持基台本体１２を製造する。そして、図６に示すように、支持基台本体１２の各挿入孔１８にダウエルピン８を先端部側から着脱自在に挿入する（ピン挿入工程）。このように挿入すると、ダウエルピン８の基端部は、支持基台本体１２の上壁１６から上方に所定長さ（例えば約４ｍｍ）だけ突出される（図７参照）。   Next, with reference to FIGS. 6-8, the manufacturing method of the working model 2 for dental technicians mentioned above is demonstrated. First, gypsum is poured into a tooth mold (not shown) to manufacture the tooth model 4, and the support base body 12 is manufactured by injection molding with a synthetic resin. Then, as shown in FIG. 6, the dowel pins 8 are detachably inserted into the respective insertion holes 18 of the support base body 12 from the distal end side (pin insertion process). When inserted in this way, the base end portion of the dowel pin 8 protrudes upward by a predetermined length (for example, about 4 mm) from the upper wall 16 of the support base body 12 (see FIG. 7).

その後、図６及び図７に示すように、支持基台本体１２の上部に成型用基枠４６を着脱自在に装着する（枠装着工程）。ここで、枠装着工程で用いる成型用基枠４６について説明すると、成型用基枠４６は全体として略矩形状の外形を有し、例えばシリコンゴムや合成ゴムなどのゴム材料から形成されている。成型用基枠４６の内側には上下に貫通する開口４８が設けられ、この開口４８は、支持基台本体１２の上部の形状に対応した形状を有している。   Thereafter, as shown in FIGS. 6 and 7, the molding base frame 46 is detachably mounted on the upper portion of the support base body 12 (frame mounting step). Here, the molding base frame 46 used in the frame mounting step will be described. The molding base frame 46 has a substantially rectangular outer shape as a whole, and is formed of a rubber material such as silicon rubber or synthetic rubber. An opening 48 penetrating vertically is provided inside the molding base frame 46, and the opening 48 has a shape corresponding to the shape of the upper portion of the support base body 12.

成型用基枠４６を支持基台本体１２の上部に装着すると、支持基台本体１２の上壁１６及び周側壁１４の上端部が開口４８の下端部に挿入され、成型用基枠４６の内周面が周側壁１４の外周面に密着するようになる。このとき、成型用基枠４６の下端部が支持基台本体１２の位置決め用突部３４に支持されることにより、成型用基枠４６が支持基台本体１２に対して位置決めされる。この装着状態では、成型用基枠４６は、支持基台本体１２の上壁１６から上方に所定高さ（例えば約８ｍｍ）だけ突出されるようになり、支持基台本体１２の上面及び成型用基枠４６の内周面によって注入空間５０が規定される。   When the molding base frame 46 is mounted on the upper part of the support base body 12, the upper wall 16 and the upper end of the peripheral side wall 14 of the support base body 12 are inserted into the lower end of the opening 48. The peripheral surface comes into close contact with the outer peripheral surface of the peripheral side wall 14. At this time, the molding base frame 46 is positioned with respect to the support base body 12 by the lower end portion of the molding base frame 46 being supported by the positioning protrusions 34 of the support base body 12. In this mounted state, the molding base frame 46 protrudes upward from the upper wall 16 of the support base body 12 by a predetermined height (for example, about 8 mm). The injection space 50 is defined by the inner peripheral surface of the base frame 46.

その後に、図８に示すように、固定用プレート６を成型するための石膏５２を注入空間５０に注入する（プレート成型工程）。この石膏５２は、ダウエルピン８の基端部が石膏５２に完全に浸漬されるまで注入される。このとき、支持基台本体１２の上壁１６の両端部には連結用突部２４が設けられていないので、注入した石膏５２が上壁１６の両端部に流れるようになり、石膏５２を上壁１６の全域にほぼ均一に注入することができる。注入空間５０内の石膏５２が硬化することにより、ダウエルピン８が植設され且つ一対の連結用凹部３６が形成された固定用プレート６が成型される。その後、成型用基枠４６を支持基台本体１２の上部から取り外し、固定用プレート６の上面に例えば研削加工を施して平坦となるように加工する（加工工程）。この加工は、固定用プレート６を支持基台本体１２の上面に支持させた状態で行われ、ダウエルピン８の基端面が外部に露出するまで行う。 Thereafter, as shown in FIG. 8, gypsum 52 for molding the fixing plate 6 is poured into the injection space 50 (plate molding process). The gypsum 52 is poured until the base end portion of the dowel pin 8 is completely immersed in the gypsum 52. At this time, since the connecting projections 24 are not provided at both ends of the upper wall 16 of the support base body 12, the injected gypsum 52 flows to both ends of the upper wall 16, and the gypsum 52 is moved upward. The entire wall 16 can be injected almost uniformly. When the plaster 52 in the injection space 50 is hardened, the fixing plate 6 in which the dowel pins 8 are implanted and the pair of connecting recesses 36 is formed is molded. Thereafter, the molding base frame 46 is removed from the upper part of the support base body 12, and the upper surface of the fixing plate 6 is processed to be flat by, for example, grinding (processing process). This processing is performed in a state where the fixing plate 6 is supported on the upper surface of the support base body 12, and is performed until the base end surface of the dowel pin 8 is exposed to the outside.

その後、研削加工を施した固定用プレート６の上面に歯形模型４を接着剤等を用いて固定する（模型固定工程）。更にその後、固定用プレート６を支持基台本体１２の上面に支持させた状態で、図１中の一点鎖線で示す切断線５４に沿って歯形模型４の所定部位を固定プレート６とともに切断工具（図示せず）を用いて切断する（切断工程）。このとき、固定用プレート６を切断することによって、連結用突部２４に切断工具による切り込み５６が形成されるようになる。このように切断することによって、歯形模型４の切断した部位を固定用プレート６及びダウエルピン８とともに残りの部位から取り出すことができる。なお、上述したように、支持基台本体１２には挿入孔１８に対応して位置決め用突部３４が設けられているので、歯形模型４を切断する際に、この位置決め用突部３４に基づいてダウエルピン８の配設箇所を容易に確認することができる。   Thereafter, the tooth model 4 is fixed to the upper surface of the fixing plate 6 subjected to grinding using an adhesive or the like (model fixing step). After that, in a state where the fixing plate 6 is supported on the upper surface of the support base body 12, a predetermined part of the tooth model 4 is cut together with the fixing plate 6 along the cutting line 54 shown by a one-dot chain line in FIG. It cuts using (not shown) (cutting process). At this time, by cutting the fixing plate 6, an incision 56 by a cutting tool is formed in the connecting projection 24. By cutting in this way, the cut portion of the tooth model 4 can be taken out from the remaining portion together with the fixing plate 6 and the dowel pin 8. As described above, the support base body 12 is provided with the positioning projections 34 corresponding to the insertion holes 18, so that when the tooth model 4 is cut, the positioning projections 34 are based on the positioning projections 34. Thus, the location of the dowel pins 8 can be easily confirmed.

この切断した歯形模型４を用いた所要の作業（例えば、歯冠補綴物の製作等）は、切断した固定用プレート６を支持基台本体１２の上面に支持させた状態で行われる。本実施形態の歯科技工用作業模型２では、上述のように連結用突部２４の第１突状部２６及び第１凹状部２８と連結用凹部３６の第２凹状部４０及び第２突状部３８とがそれぞれ相互に連結されるので、固定用プレート６と支持基台本体１２との水平方向の連結強度を高めることができ、切断した固定用プレート６の支持基台本体１２に対する回転やぐらつき等を確実に防止することができる。   The required work using the cut tooth profile model 4 (for example, production of a crown prosthesis) is performed with the cut fixing plate 6 supported on the upper surface of the support base body 12. In the dental technician work model 2 of the present embodiment, as described above, the first projecting portion 26 and the first recessed portion 28 of the connecting projection 24 and the second recessed portion 40 and the second projecting shape of the connecting recess 36 are provided. Since the portions 38 are connected to each other, the horizontal connection strength between the fixing plate 6 and the support base main body 12 can be increased, and the rotation of the cut fixing plate 6 with respect to the support base main body 12 can be improved. It is possible to reliably prevent wobble and the like.

また、連結用突部２４の第１突状部２６及び連結用凹部３６の第２凹状部４０にはそれぞれ、内側に向けて下り傾斜する傾斜面３０，４４が対応して形成され、また連結用突部２４の第１凹状部２８及び連結用凹部３６の第２突状部３８にはそれぞれ、内側に向けて下り傾斜する傾斜面３２，４２が対応して形成されているので、固定用プレート６と支持基台本体１２との鉛直方向の連結強度が比較的低くなり、固定用プレート６の支持基台本体１２に対する着脱を容易に行うことができる。   In addition, the first protrusion 26 of the connecting protrusion 24 and the second recess 40 of the connecting recess 36 are respectively formed with inclined surfaces 30 and 44 that incline downward toward the inside. The first concave portion 28 of the projecting projection 24 and the second projecting portion 38 of the connecting concave portion 36 are respectively formed with inclined surfaces 32 and 42 that incline downward toward the inside. The vertical connection strength between the plate 6 and the support base body 12 is relatively low, and the fixing plate 6 can be easily attached to and detached from the support base body 12.

なお、連結用突部２４の突出高さＨは、０．５〜５．０ｍｍであるのが好ましく、１．０〜３．０ｍｍであるのがより好ましい。上記突出高さＨが０．５ｍｍよりも低いと、固定用プレート６と支持基台本体１２との水平方向の連結強度が十分でなく、また上記突出高さＨが５．０ｍｍよりも高いと、切断工程における切断工具による連結用突部２４の切り込み量が多くなり、作業効率が低下してしまう。   In addition, the protrusion height H of the connecting protrusion 24 is preferably 0.5 to 5.0 mm, and more preferably 1.0 to 3.0 mm. When the protrusion height H is lower than 0.5 mm, the horizontal connection strength between the fixing plate 6 and the support base body 12 is not sufficient, and when the protrusion height H is higher than 5.0 mm. The cutting amount of the connecting projection 24 by the cutting tool in the cutting process is increased, and the working efficiency is lowered.

また、第１突状部２６に形成された傾斜面３０の傾斜角度θ１は、４０〜６０°であるのが好ましく、また第１凹状部２８に形成された傾斜面３２の傾斜角度θ２は、５〜１５°であるのが好ましい。上記傾斜角度θ１が４０°よりも小さく、上記傾斜角度θ２が５°よりも小さいと、石膏で形成された固定用プレート６の第２突状部３８及び第２凹状部４０の割れが生じ易くなる。また、上記傾斜角度θ１が６０°よりも大きく、上記傾斜角度θ２が１５°よりも大きいと、固定用プレート６と支持基台本体１２との鉛直方向の連結強度が極端に低くなり、作業時に固定用プレート６が支持基台本体１２より落下するおそれがある。   In addition, the inclination angle θ1 of the inclined surface 30 formed on the first protrusion 26 is preferably 40 to 60 °, and the inclination angle θ2 of the inclined surface 32 formed on the first concave portion 28 is It is preferably 5 to 15 °. If the inclination angle θ1 is smaller than 40 ° and the inclination angle θ2 is smaller than 5 °, the second projecting portion 38 and the second concave portion 40 of the fixing plate 6 formed of plaster are likely to crack. Become. Further, when the tilt angle θ1 is larger than 60 ° and the tilt angle θ2 is larger than 15 °, the vertical connection strength between the fixing plate 6 and the support base body 12 becomes extremely low. The fixing plate 6 may fall from the support base body 12.

本実施形態では、模型固定工程において、固定用プレート６の上面に歯形模型４を接着剤等を用いて固定するようにしたが、成型前の固定用プレート６（即ち、硬化前の石膏５２）に歯形模型４を押し付け、石膏５２の硬化により固定用プレート６の上面に歯形模型４を固定するようにしてもよい。
［第２の実施形態］
次に、図９及び図１０を参照して、第２の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図９は、本発明の第２の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、図１０は、図９の連結用突部の一部を拡大して示す部分拡大斜視図である。なお、以下に示す各実施形態において、上記実施形態と実質上同一の構成要素には同一の符号を付し、その説明を省略する。 In the present embodiment, in the model fixing step, the tooth model 4 is fixed to the upper surface of the fixing plate 6 using an adhesive or the like, but the fixing plate 6 before molding (that is, the plaster 52 before curing). Alternatively, the tooth model 4 may be pressed against the upper surface of the fixing plate 6 by hardening the gypsum 52.
[Second Embodiment]
Next, with reference to FIG.9 and FIG.10, the working model for dental technicians of 2nd Embodiment and the support base used for this are demonstrated. FIG. 9 is a view showing the upper surface of the support base of the dental technician work model according to the second embodiment of the present invention, and FIG. 10 is an enlarged view of a part of the connecting protrusion of FIG. It is an expansion perspective view. In each embodiment described below, the same reference numerals are given to substantially the same components as those in the above embodiment, and the description thereof is omitted.

本実施形態の歯科技工用作業模型２Ａでは、支持基台本体１２Ａの上壁１６Ａには３個の挿入孔１８が設けられ、これら３個の挿入孔１８は、上壁１６Ａの長手方向中央部寄りに配設されている。これにより、切断工程において、図９中の一点鎖線で示す切断線５４Ａに沿って固定用プレート６Ａを切断することにより、固定用プレート６Ａは、ダウエルピン（図示せず）が植設された３個の第１プレート部５８と、ダウエルピンが植設されない２個の第２プレート部６０とに分割されるようになる。   In the dental technician work model 2A of the present embodiment, three insertion holes 18 are provided in the upper wall 16A of the support base body 12A, and these three insertion holes 18 are the central portion in the longitudinal direction of the upper wall 16A. It is arranged near. Thus, in the cutting process, the fixing plate 6A is cut along the cutting line 54A shown by the one-dot chain line in FIG. 9, so that the fixing plate 6A has three dowel pins (not shown) implanted therein. The first plate portion 58 and the two second plate portions 60 in which dowel pins are not implanted are divided.

第１プレート部５８が支持される部位においては、上記第１の実施形態と同様に、連結用突部２４Ａの第１突状部２６及び第１凹状部２８にはそれぞれ、内側に向けて下り傾斜する傾斜面３０，３２が形成され、またこれに対応して、連結用凹部（図示せず）の第２突状部及び第２凹状部にはそれぞれ、内側に向けて下り傾斜する傾斜面が形成されている。また、第２プレート部６０が支持される部位においては、連結用突部２４Ａの第１突状部２６Ａ及び第１凹状部２８Ａにはそれぞれ、鉛直方向に延びる鉛直面６２，６４が形成され、またこれに対応して、連結用凹部（図示せず）の第２突状部及び第２凹状部にはそれぞれ、鉛直方向に延びる鉛直面が形成されている。このように構成されているので、第１プレート部５８と支持基台本体１２Ａとの鉛直方向の連結強度が比較的低くなるとともに、第２プレート部６０と支持基台本体１２Ａとの鉛直方向の連結強度が比較的高くなる。   In the portion where the first plate portion 58 is supported, each of the first protrusion 26 and the first recess 28 of the connecting protrusion 24A descends inward, as in the first embodiment. Inclined inclined surfaces 30 and 32 are formed, and correspondingly, inclined surfaces that incline downward toward the inside of the second projecting portion and the second recessed portion of the connecting recess (not shown), respectively. Is formed. Further, in the portion where the second plate portion 60 is supported, vertical surfaces 62 and 64 extending in the vertical direction are formed on the first protrusion 26A and the first recess 28A of the connecting protrusion 24A, respectively. Correspondingly, a vertical surface extending in the vertical direction is formed in each of the second protrusion and the second recess of the connecting recess (not shown). With this configuration, the vertical connection strength between the first plate portion 58 and the support base body 12A is relatively low, and the vertical direction between the second plate portion 60 and the support base body 12A is relatively low. The connection strength is relatively high.

一般に、歯形模型（図示せず）を用いた所要の作業を行う際には、ダウエルピンが植設された第１プレート部５８は支持基台本体１２Ａに対して着脱して使用するが、ダウエルピンが植設されない第２プレート部６０は、支持基台本体１２Ａより取り外すことなく支持基台本体１２Ａに支持させたままで使用する。本実施形態の歯科技工用作業模型２Ａでは、上述のような構成により、第１プレート部５８の支持基台本体１２Ａに対する着脱を容易に行うことができるとともに、作業時における第２プレート部６０の支持基台本体１２Ａからの落下を抑制することができるので、歯形模型を用いた所要の作業を効率良く行うことができる。
［第３の実施形態］
次に、図１１を参照して、第３の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図１１は、本発明の第３の実施形態による歯科技工用作業模型の連結用突部の一部を拡大して示す部分拡大斜視図である。 In general, when performing a required operation using a tooth model (not shown), the first plate portion 58 in which the dowel pin is implanted is attached to and detached from the support base body 12A. The second plate portion 60 that is not implanted is used while being supported by the support base body 12A without being removed from the support base body 12A. In the dental technician work model 2A of the present embodiment, the first plate portion 58 can be easily attached to and detached from the support base body 12A with the above-described configuration, and the second plate portion 60 at the time of work can be attached. Since the fall from the support base main body 12A can be suppressed, the required work using the tooth profile model can be performed efficiently.
[Third Embodiment]
Next, with reference to FIG. 11, the working model for dental technicians of 3rd Embodiment and the support base used for this are demonstrated. FIG. 11 is a partially enlarged perspective view showing an enlarged part of a connecting projection of a dental technician work model according to the third embodiment of the present invention.

本実施形態の歯科技工用作業模型２Ｂでは、第２の実施形態と同様に、切断工程において、図１１中の一点鎖線で示す切断線５４Ｂに沿って固定用プレート６Ｂを切断することにより、固定用プレート６Ｂは、ダウエルピン（図示せず）が植設された複数の第１プレート部５８Ｂと、ダウエルピンが植設されない複数の第２プレート部６０Ｂとに分割されるようになる。   In the dental technician work model 2B of the present embodiment, as in the second embodiment, in the cutting step, the fixing plate 6B is cut along the cutting line 54B indicated by the one-dot chain line in FIG. The plate 6B is divided into a plurality of first plate portions 58B in which dowel pins (not shown) are implanted and a plurality of second plate portions 60B in which dowel pins are not implanted.

第１プレート部５８Ｂが支持される部位においては、連結用突部２４Ｂの第１突状部２６及び第１凹状部２８にはそれぞれ、内側に向けて下り傾斜する傾斜面３０，３２が形成され、またこれに対応して、連結用凹部（図示せず）の第２突状部及び第２凹状部にはそれぞれ、内側に向けて下り傾斜する傾斜面が形成されている。また、第２プレート部６０Ｂが支持される部位においては、連結用突部２４Ｂの第１突状部２６Ｂ及び第１凹状部２８Ｂにはそれぞれ、内側に向けて上り傾斜する傾斜面６６，６８が形成され、またこれに対応して、連結用凹部（図示せず）の第２突状部及び第２凹状部にはそれぞれ、内側に向けて上り傾斜する傾斜面が形成されている。このように構成されているので、第１プレート部５８Ｂが支持される部位においては、第１プレート部５８Ｂと支持基台本体１２Ｂとの鉛直方向の連結強度が比較的低くなり、また第２プレート部６０Ｂが支持される部位においては、第２プレート部６０Ｂと支持基台本体１２Ｂとの鉛直方向の連結強度がより一層高くなる。   In the portion where the first plate portion 58B is supported, inclined surfaces 30 and 32 that are inclined downward toward the inside are formed in the first protrusion 26 and the first recess 28 of the connecting protrusion 24B, respectively. Correspondingly, the second protrusion and the second recess of the connecting recess (not shown) are each formed with an inclined surface that inclines downward toward the inside. Further, at the portion where the second plate portion 60B is supported, the first protrusion 26B and the first recess 28B of the connecting protrusion 24B have inclined surfaces 66 and 68 that are inclined upward toward the inside, respectively. Corresponding to this, the second protrusion and the second recess of the connecting recess (not shown) are each formed with an inclined surface that inclines upward toward the inside. Since it is configured in this way, in the portion where the first plate portion 58B is supported, the vertical connection strength between the first plate portion 58B and the support base body 12B is relatively low, and the second plate In the portion where the portion 60B is supported, the vertical connection strength between the second plate portion 60B and the support base body 12B is further increased.

従って、本実施形態の歯科技工用作業模型２Ｂでは、上述のような構成により、第１プレート部５８Ｂの支持基台本体１２Ｂに対する着脱を容易に行うことができるとともに、作業時における第２プレート部６０Ｂの支持基台本体１２Ｂからの落下をより効果的に抑制することができるので、歯形模型（図示せず）を用いた所要の作業をより一層効率良く行うことができる。 Accordingly, the dental working model 2B of the present embodiment, the configuration as described above, it is possible to easily perform attachment and detachment with respect to the first plate portion 58 B of the supporting base body 12B, the second plate during the working Since the drop of the part 60B from the support base body 12B can be more effectively suppressed, the required work using the tooth model (not shown) can be performed more efficiently.

本実施形態の歯科技工用作業模型２Ｃでは、歯形模型４Ｃは上歯全体（又は下歯全体）のもの、即ち、全顎タイプのものから構成されている。これに関連して、固定用プレート６Ｃは弧状に延びて構成されており、ダウエルピン８は挿入孔１８に対応して固定用プレート６Ｃに間隔を置いて１４本植設されている。また、支持基台本体１２Ｃの上壁１６Ｃは、固定用プレート６Ｃに対応して弧状に延びており、この上壁１６Ｃの内側には略半楕円状の支持用凹部７０が設けられている。支持基台本体１２Ｃの周側壁１４Ｃの外周面には、挿入孔１８に対応して位置決め用突部３４が設けられている。   In the dental technician work model 2C of this embodiment, the tooth profile model 4C is composed of the whole upper tooth (or the whole lower tooth), that is, the whole jaw type. In this connection, the fixing plate 6 </ b> C extends in an arc shape, and 14 dowel pins 8 are planted at intervals in the fixing plate 6 </ b> C corresponding to the insertion holes 18. The upper wall 16C of the support base body 12C extends in an arc shape corresponding to the fixing plate 6C, and a substantially semi-elliptical support recess 70 is provided inside the upper wall 16C. Positioning protrusions 34 are provided on the outer peripheral surface of the peripheral side wall 14 </ b> C of the support base body 12 </ b> C corresponding to the insertion holes 18.

図１３（ａ）に示すように、上壁１６Ｃの上面には１４個の挿入孔１８が間隔を置いて設けられるとともに、その外周縁及び内周縁（即ち、相互に対向する両側縁）にはそれぞれ弧状に延びる連結用突部２４Ｃが設けられている。各連結用突部２４Ｃの内側部には複数の第１突状部２６Ｃが間隔を置いて設けられ、また複数の第１突状部２６Ｃの間にはそれぞれ第１凹状部２８Ｃが規定されている。第１突状部２６Ｃには、内側に向けて下り傾斜する傾斜面３０Ｃが形成され、また第１凹状部２８Ｃには、内側に向けて下り傾斜する傾斜面３２Ｃが形成されている。また、上壁１６Ｃの上面における内周縁よりも内側に離れた部位（具体的には、上壁１６Ｃの上面における内周縁と挿入孔１８との間の部位）には、一対の連結用突部２４Ｃに略平行に弧状に延びる連結補助用突部７２が設けられている。   As shown in FIG. 13 (a), 14 insertion holes 18 are provided at intervals on the upper surface of the upper wall 16C, and at the outer and inner peripheral edges (that is, opposite side edges). Each of the connecting protrusions 24C extends in an arc shape. A plurality of first protrusions 26C are provided at intervals on the inner side of each connection protrusion 24C, and a first recess 28C is defined between the plurality of first protrusions 26C. Yes. The first projecting portion 26C is formed with an inclined surface 30C inclined downward toward the inside, and the first concave portion 28C is formed with an inclined surface 32C inclined downward toward the inside. In addition, a pair of connecting projections is provided at a portion (in detail, a portion between the inner peripheral edge and the insertion hole 18 on the upper surface of the upper wall 16C) farther inward than the inner peripheral edge on the upper surface of the upper wall 16C. A connection assisting protrusion 72 extending in an arc shape substantially parallel to 24C is provided.

図１３（ｂ）に示すように、固定用プレート６Ｃの下面における外周縁及び内周縁（即ち、相互に対向する両側縁）には、支持基台本体１２Ｃの一対の連結用突部２４Ｃに対応して、一対の連結用凹部３６Ｃが設けられている。一対の連結用凹部３６Ｃはそれぞれ、上方に延びるとともに弧状に延びている。各連結用凹部３６Ｃの内側部には複数の第２突状部３８Ｃが間隔を置いて設けられ、また複数の第２突状部３８Ｃの間にはそれぞれ第２凹状部４０Ｃが規定されている。第２突状部３８Ｃ及び第２凹状部４０Ｃはそれぞれ、連結用突部２４Ｃの第１凹状部２８Ｃ及び第１突状部２６Ｃの各形状に対応した形状を有している。これにより、第２突状部３８Ｃには、第１凹状部２８Ｃの傾斜面３２Ｃに対応して、内側に向けて下り傾斜する傾斜面４２Ｃが形成され、また第２凹状部４０Ｃには、第１突状部２６Ｃの傾斜面３０Ｃに対応して、内側に向けて下り傾斜する傾斜面４４Ｃが形成されている。また、固定用プレート６Ｃの下面における内周縁よりも内側に離れた部位（具体的には、固定用プレート６Ｃの下面における内周縁とダウエルピン８との間の部位）には、連結補助用突部７２に対応して、一対の連結用凹部３６Ｃに略平行に弧状に延びる連結補助用凹部７８が設けられている。   As shown in FIG. 13B, the outer peripheral edge and the inner peripheral edge (that is, opposite side edges) on the lower surface of the fixing plate 6C correspond to the pair of connecting protrusions 24C of the support base body 12C. A pair of connecting recesses 36C is provided. Each of the pair of connecting recesses 36C extends upward and extends in an arc shape. A plurality of second protrusions 38C are provided at intervals on the inner side of each coupling recess 36C, and a second recess 40C is defined between the plurality of second protrusions 38C. . The second protruding portion 38C and the second recessed portion 40C have shapes corresponding to the shapes of the first recessed portion 28C and the first protruding portion 26C of the connecting protruding portion 24C, respectively. As a result, the second projecting portion 38C is formed with an inclined surface 42C inclined downward toward the inside corresponding to the inclined surface 32C of the first concave portion 28C, and the second concave portion 40C is provided with the first convex portion 38C. Corresponding to the inclined surface 30C of the one protruding portion 26C, an inclined surface 44C that is inclined downward toward the inside is formed. In addition, a connection assisting protrusion is provided at a portion separated from the inner peripheral edge on the lower surface of the fixing plate 6C (specifically, a portion between the inner peripheral edge and the dowel pin 8 on the lower surface of the fixing plate 6C). Corresponding to 72, a connection assisting recess 78 extending in an arc substantially parallel to the pair of connection recesses 36C is provided.

従って、本実施形態の歯科技工用作業模型２Ｃにおいても、上述したのと同様の作用効果が達成される。また、固定用プレート６Ｃを支持基台本体１２Ｃの上面に支持させると、連結補助用突部７２と連結補助用凹部７８とが相互に連結され、これにより次のような作用効果が達成される。切断工程において、図１３（ｂ）中の一点鎖線で示す切断線７４に沿って固定用プレート６Ｃを切断すると、略扇形状のプレート部７６が形成される。このプレート部７６の内周縁においては、連結用凹部３６Ｃには１つの第２凹状部４０Ｃのみが設けられるようになる。このため、プレート部７６の内周縁においては、連結用突部２４Ｃと連結用凹部３６Ｃとの連結強度が低下するが、上述のように連結補助用突部７２と連結補助用凹部７８とが相互に連結されることにより、プレート部７６と支持基台本体１２Ｃとの水平方向の連結強度を高く保つことができる。   Therefore, also in the dental technician work model 2C of the present embodiment, the same effects as described above are achieved. Further, when the fixing plate 6C is supported on the upper surface of the support base body 12C, the connection assisting protrusion 72 and the connection assisting recess 78 are connected to each other, thereby achieving the following effects. . In the cutting step, when the fixing plate 6C is cut along a cutting line 74 shown by a one-dot chain line in FIG. 13B, a substantially fan-shaped plate portion 76 is formed. At the inner peripheral edge of the plate portion 76, only one second concave portion 40C is provided in the connecting concave portion 36C. For this reason, at the inner peripheral edge of the plate portion 76, the connection strength between the connection projection 24C and the connection recess 36C is reduced, but the connection support protrusion 72 and the connection support recess 78 are mutually connected as described above. By being connected to each other, the horizontal connection strength between the plate portion 76 and the support base body 12C can be kept high.

なお、上述した連結補助用突部７２及び連結補助用凹部７８に代えて、上壁１６Ｃの上面における内周縁よりも内側に離れた部位に連結用突部２４Ｃと同様の構成を有する連結用突部を設けるとともに、固定用プレート６Ｃの下面における内周縁よりも内側に離れた部位に連結用凹部３６Ｃと同様の構成を有する連結用凹部を設けるようにしてもよい。あるいは、上壁１６Ｃの上面における内周縁に、連結用突部２４Ｃに代えて連結補助用突部を設けるとともに、固定用プレート６Ｃの下面における内周縁に、連結用凹部３６Ｃに代えて連結補助用凹部を設けるようにしてもよい。   Instead of the above-described connection assisting protrusion 72 and the connection assisting recess 78, the connection protrusion having the same configuration as that of the connection protrusion 24C at a position away from the inner peripheral edge on the upper surface of the upper wall 16C. In addition, a connecting recess having the same configuration as the connecting recess 36C may be provided in a part of the lower surface of the fixing plate 6C that is farther inward than the inner peripheral edge. Alternatively, a connection assisting protrusion is provided on the inner peripheral edge of the upper surface of the upper wall 16C instead of the connecting protrusion 24C, and a connection assisting protrusion is provided on the inner peripheral edge of the lower surface of the fixing plate 6C instead of the connection recess 36C. You may make it provide a recessed part.

また、本実施形態では、固定用プレート６Ｃのほぼ全域にダウエルピン８が植設されたもの（所謂、フルタイプのもの）について説明したが、固定用プレート６Ｃの一部にダウエルピン８が個植設されたもの（所謂、局所タイプのもの）にも適用することができ、ダウエルピン８の数及び配置は適宜設定することができる。
［第５の実施形態］
次に、図１４を参照して、第５の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図１４（ａ）は、本発明の第５の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、図１４（ｂ）は、その固定用プレートの下面を示す図である。 Further, in the present embodiment, the description has been given of the case where the dowel pins 8 are planted in almost the entire area of the fixing plate 6C (so-called full type). The number of dowel pins 8 and the arrangement thereof can be appropriately set.
[Fifth Embodiment]
Next, with reference to FIG. 14, the working model for dental technicians of 5th Embodiment and the support base used for this are demonstrated. FIG. 14 (a) is a diagram showing the upper surface of the support base of the dental technician work model according to the fifth embodiment of the present invention, and FIG. 14 (b) is a diagram showing the lower surface of the fixing plate. is there.

本実施形態の歯科技工用作業模型では、上記第１の実施形態と同様に、歯形模型（図示せず）は部分タイプのものから構成され、これに対応して、支持基台本体１２Ｄの上壁１６Ｄ及び固定用プレート６Ｄはそれぞれ横長に形成されている。また、上記第１の実施形態と同様に、上壁１６Ｄの上面における相互に対向する両側縁には一対の連結用突部２４が設けられ、固定用プレート６Ｄの下面における相互に対向する両側縁には一対の連結用凹部３６が設けられている。更に、上壁１６Ｄの上面における一側縁よりも内側に離れた部位（具体的には、上壁１６Ｄの上面における一側縁と挿入孔１８との間の部位）には、一対の連結用突部２４に略平行に略直線状に延びる連結補助用突部７２Ｄが設けられている。また、固定用プレート６Ｄの下面における一側縁よりも内側に離れた部位（具体的には、固定用プレート６Ｄの下面における一側縁とダウエルピン８との間の部位）には、連結用突条７２Ｄに対応して、一対の連結用凹部３６に略平行に略直線状に延びる連結補助用凹部７８Ｄが設けられている。   In the dental technician work model of the present embodiment, as in the first embodiment, the tooth model (not shown) is composed of a partial type, and correspondingly, on the support base body 12D. The wall 16D and the fixing plate 6D are each formed in a horizontally long shape. Similarly to the first embodiment, a pair of connecting protrusions 24 are provided on both side edges facing each other on the upper surface of the upper wall 16D, and both side edges facing each other on the lower surface of the fixing plate 6D. Are provided with a pair of concavities 36 for connection. Further, a pair of connecting portions is provided in a portion (in detail, a portion between the one side edge on the upper surface of the upper wall 16D and the insertion hole 18) that is separated from the one side edge on the upper surface of the upper wall 16D. A connection assisting protrusion 72 </ b> D that extends substantially in parallel with the protrusion 24 is provided. In addition, a connection protrusion is provided on a portion of the lower surface of the fixing plate 6D that is farther inward than the one side edge (specifically, a portion between the one side edge of the lower surface of the fixing plate 6D and the dowel pin 8). Corresponding to the strips 72D, a connection assisting recess 78D extending in a substantially straight line is provided substantially parallel to the pair of connection recesses 36.

固定用プレート６Ｄを支持基台本体１２Ｄの上面に支持させると、連結用突部２４の第１突状部２６及び第１凹状部２８がそれぞれ連結用凹部３６の第２凹状部４０及び第２突状部３８と相互に連結されるとともに、連結補助用突部７２Ｄと連結補助用凹部７８Ｄとが相互に連結される。これにより、固定用プレート６Ｄと支持基台本体１２Ｄとの水平方向の連結強度をより一層高めることができる。
［第６の実施形態］
次に、図１５を参照して、第６の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図１５（ａ）は、本発明の第６の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、図１５（ｂ）は、その固定用プレートの下面を示す図である。 When the fixing plate 6D is supported on the upper surface of the support base body 12D, the first projecting portion 26 and the first recessed portion 28 of the connecting projection 24 are respectively connected to the second recessed portion 40 and the second recessed portion 40 of the connecting recess 36. The protrusions 38 are connected to each other, and the connection auxiliary protrusions 72D and the connection auxiliary recesses 78D are connected to each other. Thereby, the horizontal connection strength between the fixing plate 6D and the support base body 12D can be further increased.
[Sixth Embodiment]
Next, with reference to FIG. 15, the working model for dental technicians of 6th Embodiment and the support base used for this are demonstrated. FIG. 15 (a) is a view showing the upper surface of the support base of the dental technician work model according to the sixth embodiment of the present invention, and FIG. 15 (b) is a view showing the lower surface of the fixing plate. is there.

本実施形態の歯科技工用作業模型では、上記第４の実施形態と同様に、歯形模型（図示せず）は全顎タイプのものから構成されている。これに関連して、固定用プレート６Ｅ及び支持基台本体１２Ｅの上壁１６Ｅはそれぞれ弧状に延びている。また、上壁１６Ｅの上面の外周縁及び内周縁にはそれぞれ弧状に延びる連結用突部２４Ｃが設けられ、固定用プレート６Ｅの下面における外周縁及び内周縁にはそれぞれ弧状に延びる連結用凹部３６Ｃが設けられている。   In the dental technician work model of the present embodiment, the tooth model (not shown) is composed of an all-jaw type as in the fourth embodiment. In this connection, the fixing plate 6E and the upper wall 16E of the support base body 12E each extend in an arc shape. Further, connecting protrusions 24C extending in an arc shape are provided on the outer peripheral edge and the inner peripheral edge of the upper surface of the upper wall 16E, respectively, and connecting recesses 36C extending in an arc shape on the outer peripheral edge and the inner peripheral edge of the lower surface of the fixing plate 6E. Is provided.

図１５（ａ）に示すように、上壁１６Ｅの上面における内周縁よりも内側に離れた部位（具体的には、上壁１６Ｅの上面における内周縁と挿入孔１８との間の部位）には、複数の連結補助用突部７２Ｅが設けられている。複数の連結補助用突部７２Ｅは、一対の連結用突部２４Ｃの間に略平行に間隔を置いて配置されている。連結補助用突部７２Ｅの突出高さは、連結用突部２４Ｃの突出高さと同程度又はこれよりも幾分低く構成されている。また、図１５（ｂ）に示すように、固定用プレート６Ｅの下面における内周縁よりも内側に離れた部位（具体的には、固定用プレート６Ｅの下面における内周縁とダウエルピン８との間の部位）には、複数の連結補助用凹部７８Ｅが設けられている。複数の連結補助用凹部７８Ｅは、複数の連結補助用突部７２Ｅに対応して、一対の連結用凹部３６Ｃの間に略平行に間隔を置いて配置されている。   As shown in FIG. 15 (a), in a portion separated from the inner peripheral edge on the upper surface of the upper wall 16E (specifically, a portion between the inner peripheral edge on the upper surface of the upper wall 16E and the insertion hole 18). Are provided with a plurality of connection assisting protrusions 72E. The plurality of connection assisting protrusions 72E are disposed substantially in parallel with each other between the pair of connection protrusions 24C. The protrusion height of the connection assisting protrusion 72E is configured to be approximately the same as or slightly lower than the protrusion height of the connection protrusion 24C. Further, as shown in FIG. 15 (b), a part (in detail, between the inner peripheral edge on the lower surface of the fixing plate 6E and the dowel pin 8) that is separated from the inner peripheral edge on the lower surface of the fixing plate 6E. The portion) is provided with a plurality of connection assisting recesses 78E. The plurality of connection assisting recesses 78E are disposed substantially parallel to each other between the pair of connection recesses 36C corresponding to the plurality of connection assisting protrusions 72E.

本実施形態の歯科技工用作業模型においては、上記第４の実施形態と同様に、次のような作用効果が達成される。固定用プレート６Ｅを支持基台本体１２Ｅの上面に支持させると、複数の連結補助用突部７２Ｅと複数の連結補助用凹部７８Ｅとが相互に連結される。切断工程において、図１５（ｂ）中の一点鎖線で示す切断線７４に沿って固定用プレート６Ｅを切断すると、略扇形状のプレート部７６Ｅが形成される。このプレート部７６Ｅの内周縁においては、連結用凹部３６Ｃには１つの第２凹状部４０Ｃのみが設けられるようになる。このため、プレート部７６Ｅの内周縁においては、連結用突部２４Ｃと連結用凹部３６Ｃとの連結強度が低下するが、２つの連結補助用突部７２Ｅと２つの連結補助用凹部７８Ｅとが相互に連結されることにより、プレート部７６Ｅと支持基台本体１２Ｅとの水平方向の連結強度をより高く保つことができる。   In the dental technician work model of the present embodiment, the following operational effects are achieved as in the fourth embodiment. When the fixing plate 6E is supported on the upper surface of the support base body 12E, the plurality of connection assistant protrusions 72E and the plurality of connection assistant recesses 78E are connected to each other. In the cutting step, when the fixing plate 6E is cut along the cutting line 74 shown by the one-dot chain line in FIG. 15B, a substantially fan-shaped plate portion 76E is formed. At the inner peripheral edge of the plate portion 76E, only one second concave portion 40C is provided in the connecting concave portion 36C. For this reason, at the inner peripheral edge of the plate portion 76E, the connection strength between the connection protrusion 24C and the connection recess 36C is reduced, but the two connection support protrusions 72E and the two connection support recesses 78E are mutually connected. By being connected to each other, the horizontal connection strength between the plate portion 76E and the support base body 12E can be kept higher.

なお、図１６に示すように、連結用突部２４Ｃ’の内側部において複数の第１突状部及び複数の第１凹状部を省略するとともに、連結用凹部３６Ｃ’の内側部において複数の第２突状部及び複数の第２凹状部を省略することもできる。このように構成することによっても、上述と同様の作用効果を達成することができる。
［第７の実施形態］
次に、図１７を参照して、第７の実施形態の歯科技工用作業模型及びこれに用いる支持基台について説明する。図１７（ａ）は、本発明の第７の実施形態による歯科技工用作業模型の支持基台の上面を示す図であり、図１７（ｂ）は、その固定用プレートの下面を示す図である。 As shown in FIG. 16, the plurality of first protrusions and the plurality of first concave portions are omitted in the inner portion of the connecting protrusion 24C ′, and the plurality of first protrusions are omitted in the inner portion of the connecting recess 36C ′. The two protruding portions and the plurality of second concave portions can be omitted. By configuring in this way, the same effects as described above can be achieved.
[Seventh Embodiment]
Next, with reference to FIG. 17, the working model for dental technicians of 7th Embodiment and the support base used for this are demonstrated. FIG. 17 (a) is a view showing the upper surface of the support base of the dental work model according to the seventh embodiment of the present invention, and FIG. 17 (b) is a view showing the lower surface of the fixing plate. is there.

本実施形態の歯科技工用作業模型では、上記第１の実施形態と同様に、歯形模型（図示せず）は部分タイプのものから構成されている。これに対応して、支持基台本体１２Ｆの上壁１６Ｆ及び固定用プレート６Ｆはそれぞれ横長に形成されている。また、上壁１６Ｆの上面における相互に対向する両側縁にはそれぞれ連結用突部２４が設けられ、固定用プレート６Ｆの下面における相互に対向する両側縁にはそれぞれ連結用凹部３６が設けられている。   In the dental technician work model of the present embodiment, the tooth model (not shown) is composed of a partial type, as in the first embodiment. Correspondingly, the upper wall 16F of the support base body 12F and the fixing plate 6F are each formed in a horizontally long shape. Further, connecting protrusions 24 are provided on both side edges facing each other on the upper surface of the upper wall 16F, and connecting recesses 36 are provided on both side edges facing each other on the lower surface of the fixing plate 6F. Yes.

図１７（ａ）に示すように、上壁１６Ｆの上面における一側縁よりも内側に離れた部位（具体的には、上壁１６Ｆの上面における内周縁と挿入孔１８との間の部位）には、複数の連結補助用突部７２Ｆが設けられている。複数の連結補助用突部７２Ｆは、一対の連結用突部２４の間に略平行に間隔を置いて配置されている。連結補助用突部７２Ｆの突出高さは、連結用突部２４の突出高さと同程度又はこれよりも幾分低く構成されている。また、図１７（ｂ）に示すように、固定用プレート６Ｆの下面における一側縁よりも内側に離れた部位（具体的には、固定用プレート６Ｆの下面における内周縁とダウエルピン８との間の部位）には、複数の連結補助用凹部７８Ｆが設けられている。複数の連結補助用凹部７８Ｆは、複数の連結補助用突部７２Ｆに対応して、一対の連結用凹部３６の間に略平行に間隔を置いて配置されている。   As shown in FIG. 17 (a), a portion that is farther inward than one side edge on the upper surface of the upper wall 16F (specifically, a portion between the inner peripheral edge of the upper surface of the upper wall 16F and the insertion hole 18). Is provided with a plurality of connection assisting protrusions 72F. The plurality of connection assisting protrusions 72F are disposed between the pair of connection protrusions 24 so as to be substantially parallel to each other. The protrusion height of the connection auxiliary protrusion 72F is configured to be the same as or slightly lower than the protrusion height of the connection protrusion 24. Further, as shown in FIG. 17B, a portion (in detail, between the inner peripheral edge on the lower surface of the fixing plate 6F and the dowel pin 8) that is separated from the one side edge on the lower surface of the fixing plate 6F. ) Is provided with a plurality of connection auxiliary recesses 78F. The plurality of connection assisting recesses 78F are disposed substantially parallel to each other between the pair of connection recesses 36 corresponding to the plurality of connection support protrusions 72F.

固定用プレート６Ｆを支持基台本体１２Ｆの上面に支持させると、連結用突部２４の第１突状部２６及び第１凹状部２８がそれぞれ連結用凹部３６の第２凹状部４０及び第２突状部３８と相互に連結されるとともに、複数の連結補助用突部７２Ｆと複数の連結補助用凹部７８Ｆとが相互に連結される。これにより、固定用プレート６Ｆと支持基台本体１２Ｆとの水平方向の連結強度をより一層高めることができる。   When the fixing plate 6F is supported on the upper surface of the support base body 12F, the first projecting portion 26 and the first recessed portion 28 of the connecting projection 24 are respectively the second recessed portion 40 and the second recessed portion 40 of the connecting recess 36. The plurality of connection assisting protrusions 72F and the plurality of connection assisting recesses 78F are connected to each other while being connected to the protrusions 38. Thereby, the horizontal connection strength between the fixing plate 6F and the support base body 12F can be further increased.

以上、本発明に従う歯科技工用作業模型及びこれに用いる支持基台の各種実施形態について説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲を逸脱することなく種々の変形乃至修正が可能である。   As mentioned above, although various embodiment of the working model for dental technicians according to this invention and the support base used for this was described, this invention is not limited to this embodiment, and various without departing from the scope of this invention. The deformation | transformation thru | or correction | amendment are possible.

上記各実施形態では、連結用突部２４（２４Ａ〜２４Ｃ）の第１凹状部２８（２８Ａ〜２８Ｃ）及び連結用凹部３６（３６Ｃ）の第２突状部３８（３８Ｃ）にそれぞれ内側に向けて下り傾斜する傾斜面３２（３２Ｃ），４２（４２Ｃ）を形成したが、鉛直方向に延びる鉛直面を形成するようにしてもよい。   In each of the above embodiments, the first protrusion 28 (28A to 28C) of the connecting protrusion 24 (24A to 24C) and the second protrusion 38 (38C) of the connection recess 36 (36C) are directed inward. Although the inclined surfaces 32 (32C) and 42 (42C) inclined downward are formed, a vertical surface extending in the vertical direction may be formed.

また、上記各実施形態では、支持基台本体１２（１２Ａ〜１２Ｆ）の上面における相互に対向する両側縁に連結用突部２４（２４Ａ〜２４Ｃ）を設けるとともに、固定用プレート６（６Ａ〜６Ｆ）の下面における相互に対向する両側縁に連結用凹部３６（３６Ｃ）を設けるように構成したが、例えば、支持基台本体１２（１２Ａ〜１２Ｆ）の上面における全周縁に連結用突部２４（２４Ａ〜２４Ｃ）を設けるとともに、固定用プレート６（６Ａ〜６Ｆ）の下面における全周縁に連結用凹部３６（３６Ｃ）を設けるように構成してもよい。あるいは、支持基台本体１２（１２Ａ〜１２Ｆ）の上面における一側縁に連結用突部２４（２４Ａ〜２４Ｃ）を設けるとともに、固定用プレート６の下面における一側縁に連結用凹部３６（３６Ｃ）を設けるように構成してもよい。   Moreover, in each said embodiment, while providing the connection protrusion 24 (24A-24C) in the both-sides edge which mutually opposes in the upper surface of the support base main body 12 (12A-12F), it is the fixing plate 6 (6A-6F). ), The connecting recesses 36 (36C) are provided on both side edges facing each other. For example, the connecting protrusion 24 (on the entire periphery of the upper surface of the support base body 12 (12A to 12F) is provided. 24A to 24C) and a connecting recess 36 (36C) may be provided on the entire periphery of the lower surface of the fixing plate 6 (6A to 6F). Alternatively, the connection protrusions 24 (24A to 24C) are provided on one side edge on the upper surface of the support base body 12 (12A to 12F), and the connection recess 36 (36C) is provided on one side edge on the lower surface of the fixing plate 6. ) May be provided.

また、上記第４（第５）の実施形態では、連結補助用突部７２（７２Ｄ）及び連結補助用凹部７８（７８Ｄ）をそれぞれ弧状に（略直線状に）延びるように構成したが、例えば波線状に蛇行しながら弧状に（略直線状に）延びるように構成してもよい。また、上記第６及び第７の実施形態では、複数の連結補助用突部７２Ｅ（７２Ｆ）及び複数の連結補助用凹部７８Ｅ（７８Ｆ）をそれぞれ破線状に配置したが、例えば点線状に配置してもよく、適宜の形状に配置することができる。   In the fourth (fifth) embodiment, the connection assisting protrusion 72 (72D) and the connection assisting recess 78 (78D) are each configured to extend in an arc shape (substantially linearly). You may comprise so that it may extend in arc shape (substantially linear shape), meandering in a wavy line shape. In the sixth and seventh embodiments, the plurality of connection assisting protrusions 72E (72F) and the plurality of connection assisting recesses 78E (78F) are disposed in broken lines, but are disposed in, for example, dotted lines. They may be arranged in an appropriate shape.

２，２Ａ〜２Ｃ 歯科技工用作業模型
４，４Ｃ 歯形模型
６，６Ａ〜６Ｆ 固定用プレート
８ ダウエルピン
１０，１０Ａ〜１０Ｆ 支持基台
１２，１２Ａ〜１２Ｆ 支持基台本体
１８ 挿入孔
２４，２４Ａ〜２４Ｃ，２４Ｃ’ 連結用突部
２６，２６Ａ〜２６Ｃ 第１突状部
２８，２８Ａ〜２８Ｃ 第１凹状部
３０，３０Ｃ 傾斜面
３２，３２Ｃ 傾斜面
４２，４２Ｃ 傾斜面
４４，４４Ｃ 傾斜面
６６，６８ 傾斜面
３６，３６Ｃ，３６Ｃ’ 連結用凹部
３８，３８Ｃ 第２突状部
４０，４０Ｃ 第２凹状部
５８，５８Ｂ 第１プレート部
６０，６０Ｂ 第２プレート部
６２，６４ 鉛直面
７２，７２Ｄ〜７２Ｆ 連結補助用突部
７８，７８Ｄ〜７８Ｆ 連結補助用凹部 2,2A-2C Dental Technic Work Model 4,4C Tooth Model 6,6A-6F Fixing Plate 8 Dowel Pin 10,10A-10F Support Base 12,12A-12F Support Base Main Body 18 Insertion Hole 24,24A-24C , 24C ′ Connecting projections 26, 26A to 26C First projection 28, 28A to 28C First recess 30, 30C Inclined surface 32, 32C Inclined surface 42, 42C Inclined surface 44, 44C Inclined surface 66, 68 Inclined Surface 36, 36C, 36C 'Connection recess 38, 38C Second protrusion 40, 40C Second recess 58, 58B First plate portion 60, 60B Second plate portion 62, 64 Vertical surfaces 72, 72D to 72F Connection Auxiliary protrusion 78, 78D to 78F Connection auxiliary recess

Claims (3)

歯形模型が固定される石膏から形成された固定用プレートと、前記固定用プレートに植設された長手方向に垂直な断面の形状が丸形のダウエルピンと、前記固定用プレートを支持するための合成樹脂から形成された支持基台と、を備えた歯科技工用作業模型であって、
前記支持基台の上面には、前記ダウエルピンが挿入される長手方向に垂直な断面の形状が丸形の挿入孔が設けられ、前記支持基台の上面における周縁の少なくとも一部には、上方に突出する連結用突部が設けられ、前記連結用突部の内側部には複数の第１突状部が間隔を置いて設けられ、前記複数の第１突状部の間にはそれぞれ第１凹状部が規定され、また前記固定用プレートの下面における周縁の少なくとも一部には、上方に延びる連結用凹部が設けられ、前記連結用凹部の内側部には複数の第２突状部が間隔を置いて設けられ、前記複数の第２突状部の間にはそれぞれ第２凹状部が規定されており、
前記連結用突部及び前記連結用凹部はそれぞれ一対設けられ、前記一対の連結用突部は、前記支持基台の上面における相互に対向する両側縁に設けられ、これに対応して、前記一対の連結用凹部は、前記固定用プレートの下面における相互に対向する両側縁に設けられており、
前記連結用突部の前記第１突状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、前記連結用凹部の前記第２凹状部には、内側に向けて下り傾斜する傾斜面が形成されており、
前記連結用突部の前記第１凹状部には、内側に向けて下り傾斜する傾斜面が形成され、これに対応して、前記連結用凹部の前記第２突状部には、内側に向けて下り傾斜する傾斜面が形成されていて、
前記第１突状部に形成された傾斜面の鉛直方向に対する傾斜角度は４０〜６０°であり、また前記第１凹状部に形成された傾斜面の鉛直方向に対する傾斜角度は５〜１５°であり、
また、前記歯形模型は全顎タイプであり、これに対応して、前記固定用プレート及び前記支持基台の上面はそれぞれ弧状に延びており、
前記一対の連結用突部は、前記支持基台の上面における外周縁及び内周縁に設けられ、また前記支持基台の上面における内周縁よりも内側に離れた部位には連結補助用突部が設けられ、これに対応して、前記一対の連結用凹部は、前記固定用プレートの下面における外周縁及び内周縁に設けられ、また前記固定用プレートの下面における内周縁よりも内側に離れた部位には連結補助用凹部が設けられ、
前記連結補助用突部及び前記連結補助用凹部はそれぞれ複数設けられ、前記複数の連結補助用突部は、前記一対の連結用突部の間にこれらに略平行に間隔を置いて配置され、前記複数の連結補助用凹部は、前記一対の連結用凹部の間にこれらに略平行に間隔を置いて配置されており、
前記固定用プレートが前記支持基台の上面に支持されると、前記連結用突部の前記第１突状部及び前記第１凹状部はそれぞれ、前記連結用凹部の前記第２凹状部及び前記第２突状部と相互に連結され、且つ、前記連結補助用突部と前記連結補助用凹部とが相互に連結されることを特徴とする歯科技工用作業模型。 A fixing plate made of gypsum to which the tooth model is fixed, a dowel pin having a round cross-sectional shape perpendicular to the longitudinal direction implanted in the fixing plate, and a composite for supporting the fixing plate A dental technician working model comprising a support base made of resin ,
An insertion hole having a round cross-sectional shape perpendicular to the longitudinal direction in which the dowel pin is inserted is provided on the upper surface of the support base, and at least a part of the peripheral edge on the upper surface of the support base is provided upward. Protruding connecting protrusions are provided, and a plurality of first protrusions are provided at intervals on the inner side of the connecting protrusions, and a first is provided between the plurality of first protrusions. A concave portion is defined, and at least a part of the peripheral edge of the lower surface of the fixing plate is provided with a connecting concave portion extending upward, and a plurality of second projecting portions are spaced apart on the inner side of the coupling concave portion. And a second concave portion is defined between the plurality of second projecting portions,
A pair of the connecting protrusions and the connecting recesses are provided, and the pair of connecting protrusions are provided on opposite side edges on the upper surface of the support base, and correspondingly, The connecting recesses are provided on opposite side edges on the lower surface of the fixing plate,
The first projecting portion of the connecting projection is formed with an inclined surface that slopes downward toward the inside, and correspondingly, the second recessed portion of the connecting recess is directed inward. An inclined surface that slopes downward is formed,
The first concave portion of the connecting protrusion has an inclined surface that inclines downward toward the inside, and correspondingly, the second protruding portion of the connecting recess faces inward. An inclined surface that is inclined downward is formed,
The inclination angle with respect to the vertical direction of the inclined surface formed on the first protrusion is 40 to 60 °, and the inclination angle with respect to the vertical direction of the inclined surface formed on the first concave portion is 5 to 15 °. Yes,
Further, the tooth model is a full jaw type, and correspondingly, the fixing plate and the upper surface of the support base each extend in an arc shape,
The pair of connecting protrusions are provided on an outer peripheral edge and an inner peripheral edge on the upper surface of the support base, and a connection auxiliary protrusion is provided at a position farther inward than the inner peripheral edge on the upper surface of the support base. Correspondingly, the pair of connecting recesses are provided on the outer peripheral edge and the inner peripheral edge on the lower surface of the fixing plate, and are located on the inner side of the inner peripheral edge on the lower surface of the fixing plate. Is provided with a recess for connection assistance,
A plurality of the connection assisting protrusions and the plurality of connection assisting recesses are provided, and the plurality of connection assisting protrusions are disposed between the pair of connection protrusions and spaced substantially parallel to each other, The plurality of connection auxiliary recesses are disposed between the pair of connection recesses and spaced substantially parallel to each other,
When the fixing plate is supported on the upper surface of the support base, the first protruding portion and the first recessed portion of the connecting protrusion are respectively the second recessed portion and the connecting recess of the connecting recess. A working model for dental technician, wherein the working model is connected to the second projecting portion and the connecting assisting projection and the connecting assist recess are connected to each other. 前記固定用プレートは、前記ダウエルピンが植設された第１プレート部と、前記ダウエルピンが植設されない第２プレート部と、を備え、
前記第１プレート部が支持される部位においては、前記連結用突部の前記第１突状部及び前記連結用凹部の前記第２凹状部にはそれぞれ、内側に向けて下り傾斜する傾斜面が形成され、また前記第２プレート部が支持される部位においては、前記連結用突部の前記第１突状部及び前記連結用凹部の前記第２凹状部にはそれぞれ、内側に向けて上り傾斜する傾斜面又は鉛直方向に延びる鉛直面が形成されていることを特徴とする請求項１に記載の歯科技工用作業模型。 The fixing plate includes a first plate portion in which the dowel pins are implanted, and a second plate portion in which the dowel pins are not implanted,
In the portion where the first plate portion is supported, the first protruding portion of the connecting protrusion and the second recessed portion of the connecting recess each have inclined surfaces that are inclined downward toward the inside. In the portion where the second plate portion is formed and supported, the first projecting portion of the connecting projection and the second recessed portion of the connecting recess are inclined upward inward, respectively. The working model for dental technician according to claim 1, wherein an inclined surface or a vertical surface extending in a vertical direction is formed. 前記連結用突部の突出高さは、０．５〜５．０ｍｍであることを特徴とする請求項１〜２のいずれかに記載の歯科技工用作業模型。
The dental technician's work model according to any one of claims 1 to 2 , wherein a protrusion height of the connecting protrusion is 0.5 to 5.0 mm.
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