WO2012002487A1 - Dental model, support base and kit - Google Patents

Dental model, support base and kit Download PDF

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Publication number
WO2012002487A1
WO2012002487A1 PCT/JP2011/065028 JP2011065028W WO2012002487A1 WO 2012002487 A1 WO2012002487 A1 WO 2012002487A1 JP 2011065028 W JP2011065028 W JP 2011065028W WO 2012002487 A1 WO2012002487 A1 WO 2012002487A1
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Prior art keywords
tooth
dental model
model
insertion hole
tongue
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PCT/JP2011/065028
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French (fr)
Japanese (ja)
Inventor
克浩 並河
暁春 賈
岩城　重次
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株式会社ニッシン
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Priority to JP2012522689A priority Critical patent/JPWO2012002487A1/en
Publication of WO2012002487A1 publication Critical patent/WO2012002487A1/en

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/283—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine for dentistry or oral hygiene

Definitions

  • the present invention relates to a dental model and its parts.
  • Model teeth are classified into those having a root extending downward from the cervical part (typically molars) and those having a root extending downward from the cervical part (typically anterior teeth). Has a shape.
  • FIG. 6 is a cross-sectional view of a cheek tongue of a dental model according to a conventional example.
  • the width of the tip portion of the root portion 830 is used as a reference so that the root portion 830 can be inserted into the support member 850.
  • a hole in the socket 840 is formed. For this reason, an originally unnecessary gap G is generated between the tooth neck 810 and the socket 840, and the quality of the training training can be reduced (see Patent Document 1).
  • the present invention has been made in view of the above circumstances, and can provide a dental model part that can support a model tooth having a tooth root portion extending downward and can improve the quality of training training, a kit including the part, and a dental model.
  • the purpose is to provide.
  • the present inventors have found that by using an intervening member different from the support base, the gap between the tooth neck and the support base generated when supporting the model tooth having the root portion extending downward is filled.
  • the invention has been completed. Specifically, the present invention provides the following.
  • a dental model comprising a model tooth and a support member that supports the model tooth, At least one of the model teeth has a crown portion and a root portion extending downward from the cervical portion in the buccal tongue section,
  • the said support member is a dental model which has the support base which has an insertion hole part of the magnitude
  • the insertion hole portion has one surface on the buccal side or the tongue side along at least a part of the tooth root portion from the tooth neck portion, and the other surface is parallel to the one surface.
  • a support base used as a part of a support member that supports model teeth A support base having an insertion hole portion in which one surface on the buccal side or the tongue side is inclined inward and the other surface is inclined in parallel with or outward from the one surface in the buccal tongue cross section.
  • a kit used for a dental model At least one model tooth having a crown portion and a root portion extending downward from the tooth neck in the buccal tongue section; An interposition member that contacts a part or all of the tooth neck.
  • the gap between the tooth neck portion and the insertion hole portion generated when the model tooth having the root portion extending downward is supported is filled with the interposition member.
  • FIG. 2 is a sectional view taken along line II-II in FIG. It is a figure which shows the usage method of the dental model of FIG. It is sectional drawing of the dental model which concerns on one modification of this invention. It is sectional drawing of the dental model which concerns on 2nd Embodiment of this invention. It is sectional drawing of the dental model which concerns on a prior art example.
  • FIG. 1 is an overall perspective view of the dental model 10 according to the first embodiment of the present invention
  • FIG. 2 is a sectional view taken along line II-II in FIG.
  • the dental model 10 includes a model tooth 20 having a shape that approximates the shape of an actual tooth and a support member 40 that supports the model tooth 20, and the support member 40 in this embodiment is held on the tray 30. .
  • the model tooth 20 is composed of an anterior tooth 23 and a molar tooth 21 in this embodiment.
  • Each model tooth 20 includes a crown portion and a root portion, and the anterior teeth 23 and the molar teeth 21 are typically different in shape. That is, as shown in FIG. 2, the molar 21 has a crown part 211 that extends upward and a tooth root part 215 a and 215 b that extends downward, with the tooth neck parts 213 a and 213 b as boundaries, while the anterior teeth 23 are The root portion narrows downward from the tooth neck.
  • the dental model according to the present invention may include at least a model tooth having the same structure as the molar tooth 21 and a support member that supports the model tooth.
  • the cross section taken along the line II-II in FIG. 1 indicates a surface (buccal tongue cross section) including a line related to the direction connecting the jaw and the tongue (buccal tongue direction) and a line substantially parallel to the tooth axis of the model tooth 20. .
  • FIG. 3 is a diagram showing how to use the dental model of FIG.
  • the support member 40 includes a support base 41 having an insertion hole 411 into which the root of the model tooth 20 is inserted.
  • the insertion hole 411 has a size that allows the roots 215a and 215b of the molar 21 to be inserted, a gap is generated between the necks 213a and 213b having a narrower width than the roots 215a and 215b.
  • the support member 40 includes the interposition member 43 that fills the gap between the tooth neck part 213a and the insertion hole part 411, the quality of training training can be improved.
  • the tongue side surface 417 extends along at least a part of the tooth root portion 215b from the tooth neck portion 213b, and the buccal side surface 416 is parallel to the tongue side surface 417 or outwardly from the side In the embodiment, it is inclined substantially parallel). Therefore, when the root portion of the molar 21 is inserted into the insertion hole 411 and at least a part of the root portion 215b is brought into contact with the lingual side surface 417 from the lingual side neck portion 213b, the cheek side cervical portion 213a and the cheek side surface A gap is formed between the intermediate member 416 and the gap is filled with the interposition member 43.
  • the buccal side surface of the insertion hole 411 may be along the at least part of the root portion from the tooth neck portion, and the tongue side surface may be separated from the tooth neck portion.
  • the interposed member 43 of the present embodiment extends to the side wall 437 shaped along the cheek side surface 416 and the bottom surface 418 of the insertion hole 411 in addition to the bridging portion 431 that fills the space between the tooth neck portion 213a and the cheek side surface 416. Part 433.
  • the posture of the molar 21 in the insertion hole 411 is stabilized by having the side wall 437 along the cheek side surface 416 and the extending part 433 along the bottom surface 418 of the insertion hole part 411.
  • the interposition member 43 since it is not necessary to provide the interposition member 43 on both sides of the root of the cheek tongue cross section, the interposition member 43 can be integrally formed, reducing the manufacturing cost, and assembling and disassembling during use. It is preferable from the viewpoint of avoidance.
  • FIG. 5 is a cross-sectional view of a dental model according to the second embodiment of the present invention.
  • the interposition member in the present embodiment includes two or more divided members 43a and 43b that can be divided by a dividing surface 436 that forms an angle with the cheek tongue cross section. Since each of the divided members 43a and 43b can be independently arranged around the tooth neck portions 213a and 213b, the gap between the tooth neck portions 213a and 213b and the insertion hole portion 411 can be filled. Moreover, in this aspect, since it is not necessary to make an insertion hole part into a characteristic shape like 1st Embodiment, the conventional support stand 41B can also be used.
  • the dividing surface 436 must be formed so that each of the dividing members 43a and 43b fills the gap between the tooth neck portions 213a and 213b and the insertion hole portion 411 (that is, divided into right and left in FIG. 5). , It should not be formed so as not to fill the gap (for example, divided vertically in FIG. 5).
  • the interposition member 43 extends along at least a part of the tooth root portion 215a from the tooth neck portion 213a. Thereby, the attitude
  • the range along which the interposition member 43 extends is not particularly limited, but from the viewpoint of further stabilizing the postures of the tooth root portions 215a and 215b, a portion that protrudes most outward from the tooth root portion 215a (see FIG. 2). It is preferable to extend to the lower side than the portion surrounded by the dotted line.
  • the interposition member 43 of the present embodiment has an encircling hole portion 438 that encloses the tooth root portion 215a and a part of the tooth root portion 215b.
  • the tooth root parts 215a and 215b in the insertion hole part 411 are positioned, and a more stable posture can be maintained.
  • the extending portion and the surrounding hole portion are not indispensable.
  • the fixing member 50 described later must be positioned on the side of the tooth root portions 215a and 215b.
  • the fixing member 50 is used in an X-ray irradiation test on the tooth root portions 215a and 215b in the training training. Can be an obstacle.
  • the material of the interposed member 43 is not particularly limited, and may be a known material used as a gum in a dental model. However, it is preferable that the interposition member 43 is made of an elastic material and fills the gap between the tooth neck 213a and the cheek side 416 in a state where the intervention member 43 is elastically contracted by the tooth neck 213a and the insertion hole 411. Thereby, the attitude
  • the elastic material is not particularly limited as long as it is elastically deformable, and may be a conventionally known material such as silicon rubber. Further, in order to fill the gap with the interposed member 43 elastically contracted, the size of the interposed member 43 in the natural state may be appropriately larger than the gap.
  • the part which comprises the gingiva around the tooth neck parts 213a and 213b is comprised by the gingival part 413 of the support base 41, and the bridge
  • the most outwardly bulging portion of the tooth root portion 215a bulges outward in the horizontal direction by widths W1 and W2 from the tooth neck portions 213a and 213b.
  • the support member 40 further includes a fixing member 50 that fixes the interposition member 43 and the support base 41 from the viewpoint of more reliably preventing the tooth root portions 215a and 215b from coming out of the insertion hole portion 411.
  • the fixing member 50 includes an insertion hole 435 provided in the extending portion 433, a through hole 415 provided in the bottom surface 418 at a position corresponding to the insertion hole 435, and penetrating from the bottom surface 418 to the outside.
  • the interposition member 43 and the support base 41 are fixed.
  • the fixing member 50 is located below the root portions 215a and 215b, which is preferable in that it does not become an obstacle to practical training.
  • the fixing method is not particularly limited as long as it can be easily detached, and may be a conventionally known one such as bolt-nut fixing.
  • the tooth root 215a is inserted into the surrounding hole 438, and the molar 21 and the interposition member 43 are combined (AB).
  • this combined body is inclined so that the tooth root portion 215b is along the tongue side surface 417, and in this state, the molar tooth 21 is inserted into the insertion hole portion 411 until it is placed at a desired position (C).
  • the tongue side surface 417 is along the root portion 215b and the cheek side surface 416 is inclined parallel to or outward from the tongue side surface 417, the assembled body is inserted in the direction along the tongue side surface 417. Can do.
  • the fixing member 50 is installed in the through hole 415 and the insertion hole 435, and the support base 41 and the interposition member 43 are fixed, whereby the dental model 10 for training training is assembled.
  • the molar 21 and the interposition member 43 are combined and then inserted into the insertion hole 411.
  • the present invention is not limited to this, and after inserting the model tooth into the insertion hole, the interposition member is inserted.
  • the gap may be filled by inserting the gap between the tooth neck and the insertion hole.
  • the present invention also provides a support base 41 used as a part of the support member 40 that supports the model teeth 20.
  • the support base 41 has one side on the cheek side or the tongue side (the tongue side surface 417 in FIGS. 2 and 4) inclined inward, and the other surface (in this embodiment, the cheek side surface). 416) has an insertion hole 411 inclined parallel to one surface or outward.
  • the present invention also provides a kit used for a dental model.
  • a kit used for a dental model.
  • a kit includes a molar 21 which is at least one model tooth having a crown portion 211, root portions 215a and 215b extending downward from the neck portions 213a and 213b in the buccal tongue section, and one of the tooth portions 213a and 213b.
  • an intervening member that abuts all or part.
  • the intervening member 43 in the preferred embodiment surrounds one side of the cheek side or the lingual side (the tooth neck part 213a in the present embodiment) of the tooth neck parts 213a and 213b in the cheek tongue cross section and the other side (the tooth in the present embodiment).
  • the neck 213b) is exposed.
  • the interposition member may be composed of two or more split members 43a and 43b that can be split by a split surface 436 that forms an angle with the cheek tongue cross section.
  • the interposition member 43 surrounds at least a part of the root portion 215a from the tooth neck portion on one side (the tooth neck portion 213a in this embodiment).
  • the interposition member 43 is comprised with the elastic material.
  • the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.

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Abstract

Disclosed are a component for a dental model, a kit comprising the component thereof and a dental model, such that a model tooth having a dental root which extends downwards can be supported and the quality of practical training can be improved. In the dental model comprising model teeth and a support member (40) which supports the model teeth, a molar tooth (21) which is at least one of the model teeth comprises a tooth crown (211) and dental roots (215a, 215b) which extend downwards from tooth cervixes (213a, 213b) in a buccolingual cross-section. The support member (40) includes a support base (41) having an insertion hole (411) large enough so that the dental roots (215a, 215b) can be inserted, and an intervening member (43) which fills the gap between the tooth cervix (213a) and the insertion hole (411).

Description

歯科模型、支持台及びキットDental model, support base and kit
　本発明は、歯科模型及びその部品に関する。 The present invention relates to a dental model and its parts.
　従来、主に歯科治療のための実習訓練に、歯牙の形状を模して造形された模型歯と、これら模型歯を支持する支持部材とを備える歯科模型が使用されている。模型歯は、歯頚部から下方に広がる歯根部を有するもの（典型的には臼歯）と、歯頚部から下方に広がる歯根部を有するもの（典型的には前歯）とに分類され、また様々な形状を有する。 Conventionally, a dental model including model teeth that are modeled after the shape of a tooth and a support member that supports these model teeth has been used mainly for practical training for dental treatment. Model teeth are classified into those having a root extending downward from the cervical part (typically molars) and those having a root extending downward from the cervical part (typically anterior teeth). Has a shape.
　図６は、従来例に係る歯科模型の頬舌断面図である。図６に示されるように、歯頚部８１０から下方に広がる歯根部８３０を有する模型歯の場合、歯根部８３０が支持部材８５０に挿入できるように、歯根部８３０の先端部分の幅を基準にして、ソケット８４０の穴が形成される。このため、歯頚部８１０とソケット８４０との間に本来不要な隙間Ｇが生じ、実習訓練の質を低下させ得る（特許文献１参照）。 FIG. 6 is a cross-sectional view of a cheek tongue of a dental model according to a conventional example. As shown in FIG. 6, in the case of a model tooth having a root portion 830 extending downward from the tooth neck portion 810, the width of the tip portion of the root portion 830 is used as a reference so that the root portion 830 can be inserted into the support member 850. A hole in the socket 840 is formed. For this reason, an originally unnecessary gap G is generated between the tooth neck 810 and the socket 840, and the quality of the training training can be reduced (see Patent Document 1).
米国２００８／０２５４４２２号公報US 2008/0254422
　本発明は、以上の実情に鑑みてなされたものであり、下方に広がる歯根部を有する模型歯を支持でき且つ実習訓練の質を向上できる歯科模型用部品及びその部品を備えるキット及び歯科模型を提供することを目的とする。 The present invention has been made in view of the above circumstances, and can provide a dental model part that can support a model tooth having a tooth root portion extending downward and can improve the quality of training training, a kit including the part, and a dental model. The purpose is to provide.
　本発明者らは、支持台とは別の介在部材を用いることで、下方に広がる歯根部を有する模型歯を支持した際に生じる歯頚部と支持台との隙間が埋められることを見出し、本発明を完成するに至った。具体的に、本発明は以下のものを提供する。 The present inventors have found that by using an intervening member different from the support base, the gap between the tooth neck and the support base generated when supporting the model tooth having the root portion extending downward is filled. The invention has been completed. Specifically, the present invention provides the following.
　（１）　模型歯と、この模型歯を支持する支持部材と、を備える歯科模型であって、
　前記模型歯の少なくとも一つは、歯冠部と、頬舌断面において歯頚部から下方に広がる歯根部と、を有し、
　前記支持部材は、前記歯根部が挿入可能な大きさの挿入穴部を有する支持台と、前記歯頚部と前記挿入穴部との隙間を埋める介在部材と、を有する歯科模型。 (1) A dental model comprising a model tooth and a support member that supports the model tooth,
At least one of the model teeth has a crown portion and a root portion extending downward from the cervical portion in the buccal tongue section,
The said support member is a dental model which has the support base which has an insertion hole part of the magnitude | size which can insert the said tooth root part, and the interposition member which fills the clearance gap between the said tooth neck part and the said insertion hole part.
　（２）　前記挿入穴部は、頬舌断面において、頬側又は舌側の一方の面が前記歯頚部から前記歯根部の少なくとも一部に沿い、他方の面が前記一方の面と平行又はそれよりも外方に傾斜する形状を有する（１）記載の歯科模型。 (2) In the cheek tongue cross-section, the insertion hole portion has one surface on the buccal side or the tongue side along at least a part of the tooth root portion from the tooth neck portion, and the other surface is parallel to the one surface. The dental model according to (1), wherein the dental model has a shape that is inclined outward.
　（３）　前記支持部材は、前記介在部材と前記支持台とを固定する固定部材を更に有する（１）又は（２）記載の歯科模型。 (3) The dental model according to (1) or (2), wherein the support member further includes a fixing member that fixes the interposition member and the support base.
　（４）　前記介在部材は、前記挿入穴部の底面まで延びる（１）から（３）いずれか記載の歯科模型。 (4) The dental model according to any one of (1) to (3), wherein the interposition member extends to a bottom surface of the insertion hole.
　（５）　前記介在部材は、前記歯頚部から前記歯根部の少なくとも一部に沿う（４）記載の歯科模型。 (5) The dental model according to (4), wherein the interposition member extends along at least a part of the root from the tooth neck.
　（６）　前記介在部材は、頬舌断面に角度をなす面で分割可能な２以上の分割部材からなる（１）記載の歯科模型。 (6) The dental model according to (1), wherein the interposition member is composed of two or more divided members that can be divided by a surface that forms an angle with the cross-section of the cheek tongue.
　（７）　前記介在部材は、弾性素材で構成され、前記歯頚部及び前記挿入穴部により弾性収縮された状態で前記隙間を埋める（１）から（６）いずれか記載の歯科模型。 (7) The dental model according to any one of (1) to (6), wherein the interposition member is made of an elastic material and fills the gap in a state of being elastically contracted by the tooth neck and the insertion hole.
　（８）　模型歯を支持する支持部材の部品として用いられる支持台であって、
　頬舌断面において、頬側又は舌側の一方の面が内方へと傾斜し、他方の面が前記一方の面と平行又はそれよりも外方に傾斜する挿入穴部を有する支持台。 (8) A support base used as a part of a support member that supports model teeth,
A support base having an insertion hole portion in which one surface on the buccal side or the tongue side is inclined inward and the other surface is inclined in parallel with or outward from the one surface in the buccal tongue cross section.
　（９）　歯科模型に用いられるキットであって、
　歯冠部と、頬舌断面において歯頚部から下方に広がる歯根部と、を有する少なくとも一つの模型歯と、
　前記歯頚部の一部又は全部に当接する介在部材と、を備えるキット。 (9) A kit used for a dental model,
At least one model tooth having a crown portion and a root portion extending downward from the tooth neck in the buccal tongue section;
An interposition member that contacts a part or all of the tooth neck.
　（１０）　前記介在部材は、頬舌断面において、前記歯頚部のうち、頬側又は舌側の一方側を包囲し且つ他方側を露出させる（９）記載のキット。 (10) The kit according to (9), wherein the interposition member surrounds one side of the cheek side or the lingual side and exposes the other side of the tooth neck in the cheek tongue cross section.
　（１１）　前記介在部材は、前記一方側の前記歯頚部から前記歯根部の少なくとも一部を包囲する（１０）記載のキット。 (11) The kit according to (10), wherein the interposition member surrounds at least a part of the root portion from the tooth neck portion on the one side.
　（１２）　前記介在部材は、頬舌断面に角度をなす面で分割可能な２以上の分割部材からなる（９）記載のキット。 (12) The kit according to (9), wherein the interposition member includes two or more divided members that can be divided by a plane that forms an angle with the cross-section of the cheek tongue.
　（１３）　前記介在部材は、弾性素材で構成されている（９）から（１２）いずれか記載のキット。 (13) The kit according to any one of (9) to (12), wherein the interposition member is made of an elastic material.
　本発明によれば、下方に広がる歯根部を有する模型歯を支持した際に生じる歯頚部と挿入穴部との隙間が、介在部材によって埋められる。これにより、下方に広がる歯根部を有する模型歯を支持でき且つ実習訓練の質を向上できる。 According to the present invention, the gap between the tooth neck portion and the insertion hole portion generated when the model tooth having the root portion extending downward is supported is filled with the interposition member. Thereby, the model tooth which has a tooth root part which spreads below can be supported, and the quality of training training can be improved.
本発明の第１実施形態に係る歯科模型の全体斜視図である。It is the whole dental model perspective view concerning a 1st embodiment of the present invention. 図１のＩＩ－ＩＩ線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 図２の歯科模型の使用方法を示す図である。It is a figure which shows the usage method of the dental model of FIG. 本発明の一変形例に係る歯科模型の断面図である。It is sectional drawing of the dental model which concerns on one modification of this invention. 本発明の第２実施形態に係る歯科模型の断面図である。It is sectional drawing of the dental model which concerns on 2nd Embodiment of this invention. 従来例に係る歯科模型の断面図である。It is sectional drawing of the dental model which concerns on a prior art example.
　以下、本発明の一実施形態について図面を参照しながら説明するが、この実施形態に本発明が限定されるものではない。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited to this embodiment.
　図１は、本発明の第１実施形態に係る歯科模型１０の全体斜視図であり、図２は図１のＩＩ－ＩＩ線断面図である。歯科模型１０は、実際の歯牙の形状に近似した形状を有する模型歯２０と、この模型歯２０を支持する支持部材４０とを備え、本実施形態における支持部材４０はトレイ３０に保持されている。 FIG. 1 is an overall perspective view of the dental model 10 according to the first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG. The dental model 10 includes a model tooth 20 having a shape that approximates the shape of an actual tooth and a support member 40 that supports the model tooth 20, and the support member 40 in this embodiment is held on the tray 30. .
　模型歯２０は、本実施形態では、前歯２３及び臼歯２１から構成される。各々の模型歯２０は歯冠部及び歯根部からなり、その形状において前歯２３及び臼歯２１は典型的に異なる。即ち、臼歯２１は、図２に示されるように、歯頚部２１３ａ，２１３ｂを境にして、上方に広がる歯冠部２１１と、下方に広がる歯根部２１５ａ，２１５ｂとを有する一方、前歯２３は、歯根部が歯頚部から下方に狭まる構造を有する。本発明に係る歯科模型は、少なくとも臼歯２１と同様の構造を有する模型歯と、その模型歯を支持する支持部材とを備えていればよい。なお、図１のＩＩ－ＩＩ線断面は、顎と舌とを結ぶ方向（頬舌方向）に関する線と、模型歯２０の歯軸に略平行な線とを含む面（頬舌断面）を指す。 The model tooth 20 is composed of an anterior tooth 23 and a molar tooth 21 in this embodiment. Each model tooth 20 includes a crown portion and a root portion, and the anterior teeth 23 and the molar teeth 21 are typically different in shape. That is, as shown in FIG. 2, the molar 21 has a crown part 211 that extends upward and a tooth root part 215 a and 215 b that extends downward, with the tooth neck parts 213 a and 213 b as boundaries, while the anterior teeth 23 are The root portion narrows downward from the tooth neck. The dental model according to the present invention may include at least a model tooth having the same structure as the molar tooth 21 and a support member that supports the model tooth. The cross section taken along the line II-II in FIG. 1 indicates a surface (buccal tongue cross section) including a line related to the direction connecting the jaw and the tongue (buccal tongue direction) and a line substantially parallel to the tooth axis of the model tooth 20. .
　図３は、図２の歯科模型の使用方法を示す図である。支持部材４０は、模型歯２０の歯根部が挿入される挿入穴部４１１を有する支持台４１を備える。ここで、挿入穴部４１１は、臼歯２１の歯根部２１５ａ，２１５ｂが挿入可能な大きさを有するため、歯根部２１５ａ，２１５ｂよりも幅が狭い歯頚部２１３ａ，２１３ｂとの間に隙間を生じる。しかし、支持部材４０は、歯頚部２１３ａと挿入穴部４１１との隙間を埋める介在部材４３を備えるため、実習訓練の質を向上できる。 FIG. 3 is a diagram showing how to use the dental model of FIG. The support member 40 includes a support base 41 having an insertion hole 411 into which the root of the model tooth 20 is inserted. Here, since the insertion hole 411 has a size that allows the roots 215a and 215b of the molar 21 to be inserted, a gap is generated between the necks 213a and 213b having a narrower width than the roots 215a and 215b. However, since the support member 40 includes the interposition member 43 that fills the gap between the tooth neck part 213a and the insertion hole part 411, the quality of training training can be improved.
　本実施形態の挿入穴部４１１は、頬舌断面において、舌側面４１７が歯頚部２１３ｂから歯根部２１５ｂの少なくとも一部に沿い、頬側面４１６が舌側面４１７と平行又はそれよりも外方（本実施形態では略平行）に傾斜する。このため、臼歯２１の歯根部を挿入穴部４１１に挿入し、舌側の歯頚部２１３ｂから歯根部２１５ｂの少なくとも一部を舌側面４１７に当接させると、頬側の歯頚部２１３ａと頬側面４１６との間に隙間が生じ、この隙間が介在部材４３によって埋められている。なお、これに限られず、挿入穴部４１１の頬側面が歯頚部から歯根部の少なくとも一部に沿い、舌側面が歯頚部から離間してもよい。 In the insertion hole 411 of the present embodiment, in the cross-section of the buccal tongue, the tongue side surface 417 extends along at least a part of the tooth root portion 215b from the tooth neck portion 213b, and the buccal side surface 416 is parallel to the tongue side surface 417 or outwardly from the side In the embodiment, it is inclined substantially parallel). Therefore, when the root portion of the molar 21 is inserted into the insertion hole 411 and at least a part of the root portion 215b is brought into contact with the lingual side surface 417 from the lingual side neck portion 213b, the cheek side cervical portion 213a and the cheek side surface A gap is formed between the intermediate member 416 and the gap is filled with the interposition member 43. However, the present invention is not limited to this, and the buccal side surface of the insertion hole 411 may be along the at least part of the root portion from the tooth neck portion, and the tongue side surface may be separated from the tooth neck portion.
　本実施形態の介在部材４３は、歯頚部２１３ａと頬側面４１６との間を埋める架橋部４３１の他に、頬側面４１６に沿う形状の側壁４３７、及び挿入穴部４１１の底面４１８まで延びる延出部４３３を有する。側壁４３７が頬側面４１６に、延出部４３３が挿入穴部４１１の底面４１８に沿うことで、挿入穴部４１１内の臼歯２１の姿勢が安定する。本実施形態は、介在部材４３を頬舌断面における歯根部の両側に設ける必要がないので、介在部材４３が一体成形が可能であり、製造コストの削減、使用時の組み立て及び分解の煩雑さの回避の観点で好ましい。 The interposed member 43 of the present embodiment extends to the side wall 437 shaped along the cheek side surface 416 and the bottom surface 418 of the insertion hole 411 in addition to the bridging portion 431 that fills the space between the tooth neck portion 213a and the cheek side surface 416. Part 433. The posture of the molar 21 in the insertion hole 411 is stabilized by having the side wall 437 along the cheek side surface 416 and the extending part 433 along the bottom surface 418 of the insertion hole part 411. In the present embodiment, since it is not necessary to provide the interposition member 43 on both sides of the root of the cheek tongue cross section, the interposition member 43 can be integrally formed, reducing the manufacturing cost, and assembling and disassembling during use. It is preferable from the viewpoint of avoidance.
　ただし、本発明は、上記実施形態に限られるものではない。図５は、本発明の第２実施形態に係る歯科模型の断面図である。本実施形態における介在部材は、頬舌断面に角度をなす分割面４３６で分割可能な２以上の分割部材４３ａ，４３ｂからなる。分割部材４３ａ，４３ｂの各々を独立して歯頚部２１３ａ，２１３ｂの周囲に配置可能であるため、歯頚部２１３ａ，２１３ｂと挿入穴部４１１との隙間を埋めることができる。また、かかる態様では、第１実施形態のように挿入穴部を特徴的な形状にしなくてもよいため、従来の支持台４１Ｂを使用することもできる。なお、分割面４３６は、分割部材４３ａ，４３ｂの各々が歯頚部２１３ａ，２１３ｂと挿入穴部４１１との隙間を埋める（つまり、図５において左右に分割される）ように形成されなければならず、隙間を埋めない（例えば、図５において上下に分割される）ように形成されてはならない。 However, the present invention is not limited to the above embodiment. FIG. 5 is a cross-sectional view of a dental model according to the second embodiment of the present invention. The interposition member in the present embodiment includes two or more divided members 43a and 43b that can be divided by a dividing surface 436 that forms an angle with the cheek tongue cross section. Since each of the divided members 43a and 43b can be independently arranged around the tooth neck portions 213a and 213b, the gap between the tooth neck portions 213a and 213b and the insertion hole portion 411 can be filled. Moreover, in this aspect, since it is not necessary to make an insertion hole part into a characteristic shape like 1st Embodiment, the conventional support stand 41B can also be used. The dividing surface 436 must be formed so that each of the dividing members 43a and 43b fills the gap between the tooth neck portions 213a and 213b and the insertion hole portion 411 (that is, divided into right and left in FIG. 5). , It should not be formed so as not to fill the gap (for example, divided vertically in FIG. 5).
　図２に戻って、介在部材４３は、歯頚部２１３ａから歯根部２１５ａの少なくとも一部に沿うことが好ましい。これにより、挿入穴部４１１内の歯根部２１５ａ，２１５ｂの姿勢がより安定化する。介在部材４３が沿う範囲は、特に限定されないが、歯根部２１５ａ，２１５ｂの姿勢をより安定化させる観点で、歯頚部２１３ａから、歯根部２１５ａのうち最も外方に膨出する部分（図２中、点線で囲んだ部分）よりも下方までに亘ることが好ましい。 2, it is preferable that the interposition member 43 extends along at least a part of the tooth root portion 215a from the tooth neck portion 213a. Thereby, the attitude | position of the tooth root parts 215a and 215b in the insertion hole part 411 is stabilized more. The range along which the interposition member 43 extends is not particularly limited, but from the viewpoint of further stabilizing the postures of the tooth root portions 215a and 215b, a portion that protrudes most outward from the tooth root portion 215a (see FIG. 2). It is preferable to extend to the lower side than the portion surrounded by the dotted line.
　また、本実施形態の介在部材４３は、歯根部２１５ａと歯根部２１５ｂの一部とを包囲する包囲穴部４３８を有する。これにより、挿入穴部４１１内の歯根部２１５ａ，２１５ｂが位置決めされ、より安定な姿勢を保持することができる。 Further, the interposition member 43 of the present embodiment has an encircling hole portion 438 that encloses the tooth root portion 215a and a part of the tooth root portion 215b. Thereby, the tooth root parts 215a and 215b in the insertion hole part 411 are positioned, and a more stable posture can be maintained.
　なお、本発明において延出部や包囲穴部は必須ではなく、例えば、図４に示す変形例の介在部材４３Ａのように、少なくとも架橋部４３１を備えていればよい。ただし、かかる態様では、後述の固定部材５０が歯根部２１５ａ，２１５ｂの側方に位置せざるを得ず、この場合、実習訓練における歯根部２１５ａ，２１５ｂへのＸ線照射試験等において固定部材５０が障害になり得る。 In the present invention, the extending portion and the surrounding hole portion are not indispensable. For example, it is sufficient that at least the bridging portion 431 is provided as in the intervening member 43A of the modification shown in FIG. However, in such an embodiment, the fixing member 50 described later must be positioned on the side of the tooth root portions 215a and 215b. In this case, the fixing member 50 is used in an X-ray irradiation test on the tooth root portions 215a and 215b in the training training. Can be an obstacle.
　介在部材４３の素材は、特に限定されず、歯科模型における歯肉として使用される公知のものであってよい。ただし、介在部材４３は弾性素材で構成され、歯頚部２１３ａ及び挿入穴部４１１により弾性収縮された状態で、歯頚部２１３ａと頬側面４１６との隙間を埋めることが好ましい。これにより、挿入穴部４１１内の臼歯２１の姿勢をより安定化することができる。なお、弾性素材は、弾性変形可能なものであれば特に限定されず、シリコンゴム等の従来公知のものであってよい。また、介在部材４３が弾性収縮された状態で隙間を埋めるためには、自然状態における介在部材４３の寸法を隙間より適宜大きくすればよい。 The material of the interposed member 43 is not particularly limited, and may be a known material used as a gum in a dental model. However, it is preferable that the interposition member 43 is made of an elastic material and fills the gap between the tooth neck 213a and the cheek side 416 in a state where the intervention member 43 is elastically contracted by the tooth neck 213a and the insertion hole 411. Thereby, the attitude | position of the molar 21 in the insertion hole part 411 can be stabilized more. The elastic material is not particularly limited as long as it is elastically deformable, and may be a conventionally known material such as silicon rubber. Further, in order to fill the gap with the interposed member 43 elastically contracted, the size of the interposed member 43 in the natural state may be appropriately larger than the gap.
　なお、歯頚部２１３ａ，２１３ｂの周囲の歯肉を構成する部分は、支持台４１の歯肉部４１３と、架橋部４３１とで構成されるため、触感等の臨場感を向上する観点では、架橋部４３１を歯肉部４１３と同様の素材で構成することも好ましい。 In addition, since the part which comprises the gingiva around the tooth neck parts 213a and 213b is comprised by the gingival part 413 of the support base 41, and the bridge | bridging part 431, from a viewpoint of improving realistic feeling, such as a tactile sense, the bridge | crosslinking part 431. It is also preferable to form a material similar to that of the gingival part 413.
　歯根部２１５ａのうち最も外方に膨出する部分（図２中、点線で囲んだ部分）は、歯頚部２１３ａ，２１３ｂよりも、水平方向に関し幅Ｗ１，Ｗ２だけ外方に膨出する。これにより、臼歯２１は、真上に力が負荷されても、歯根部２１５ａ，２１５ｂの一方（本実施形態では歯根部２１５ｂ）が頬側面４１６又は舌側面４１７（本実施形態では舌側面４１７）に係止され、挿入穴部４１１から容易には抜けにくい。 The most outwardly bulging portion of the tooth root portion 215a (portion surrounded by a dotted line in FIG. 2) bulges outward in the horizontal direction by widths W1 and W2 from the tooth neck portions 213a and 213b. Thereby, even if force is loaded just above the molar 21, one of the tooth root portions 215 a and 215 b (the tooth root portion 215 b in this embodiment) is the buccal side surface 416 or the tongue side surface 417 (in this embodiment the tongue side surface 417). And is not easily removed from the insertion hole 411.
　ただし、歯根部２１５ａ，２１５ｂが挿入穴部４１１から抜けるのをより確実に防止する観点で、支持部材４０は、介在部材４３と支持台４１とを固定する固定部材５０を更に有することが好ましい。 However, it is preferable that the support member 40 further includes a fixing member 50 that fixes the interposition member 43 and the support base 41 from the viewpoint of more reliably preventing the tooth root portions 215a and 215b from coming out of the insertion hole portion 411.
　具体的に、固定部材５０は、延出部４３３に設けられた挿通穴４３５と、この挿通穴４３５に対応する位置において底面４１８に設けられて、底面４１８から外部へと貫通する貫通孔４１５とに挿入され、これにより、介在部材４３と支持台４１とを固定する。前述の図４に示す変形例と異なり、固定部材５０が歯根部２１５ａ，２１５ｂの下方に位置するため、実習訓練の障害になりにくい点で好ましい。なお、固定の方式は、容易に離脱可能である限りにおいて特に限定されず、ボルト－ナット固定等の従来周知のものであってよい。 Specifically, the fixing member 50 includes an insertion hole 435 provided in the extending portion 433, a through hole 415 provided in the bottom surface 418 at a position corresponding to the insertion hole 435, and penetrating from the bottom surface 418 to the outside. Thus, the interposition member 43 and the support base 41 are fixed. Unlike the modified example shown in FIG. 4 described above, the fixing member 50 is located below the root portions 215a and 215b, which is preferable in that it does not become an obstacle to practical training. The fixing method is not particularly limited as long as it can be easily detached, and may be a conventionally known one such as bolt-nut fixing.
　以上の歯科模型１０の使用方法の一例について、図３を参照しながら説明する。まず、歯根部２１５ａを包囲穴部４３８に挿入して、臼歯２１及び介在部材４３を組み合わせる（Ａ～Ｂ）。次に、この組み合わせ体を、歯根部２１５ｂが舌側面４１７に沿うように傾斜させ、この状態で、臼歯２１が所望の位置に設置されるまで挿入穴部４１１へと挿入していく（Ｃ）。このとき、舌側面４１７が歯根部２１５ｂに沿い、頬側面４１６が舌側面４１７と平行又はそれよりも外方に傾斜しているため、組み立わせ体を舌側面４１７に沿った方向で挿入することができる。その後、固定部材５０を貫通孔４１５及び挿通穴４３５に設置し、支持台４１と介在部材４３とを固定することで、実習訓練用の歯科模型１０が組み立てられる。なお、本実施形態では、臼歯２１及び介在部材４３を組み合わせた後に、挿入穴部４１１へと挿入しているが、これに限られず、模型歯を挿入穴部へと挿入した後に、介在部材を歯頚部と挿入穴部との隙間に挿入し、隙間を埋めてもよい。 An example of how to use the dental model 10 will be described with reference to FIG. First, the tooth root 215a is inserted into the surrounding hole 438, and the molar 21 and the interposition member 43 are combined (AB). Next, this combined body is inclined so that the tooth root portion 215b is along the tongue side surface 417, and in this state, the molar tooth 21 is inserted into the insertion hole portion 411 until it is placed at a desired position (C). . At this time, since the tongue side surface 417 is along the root portion 215b and the cheek side surface 416 is inclined parallel to or outward from the tongue side surface 417, the assembled body is inserted in the direction along the tongue side surface 417. Can do. Thereafter, the fixing member 50 is installed in the through hole 415 and the insertion hole 435, and the support base 41 and the interposition member 43 are fixed, whereby the dental model 10 for training training is assembled. In this embodiment, the molar 21 and the interposition member 43 are combined and then inserted into the insertion hole 411. However, the present invention is not limited to this, and after inserting the model tooth into the insertion hole, the interposition member is inserted. The gap may be filled by inserting the gap between the tooth neck and the insertion hole.
　本発明は、模型歯２０を支持する支持部材４０の部品として用いられる支持台４１も提供する。かかる支持台４１は、頬舌断面において、頬側又は舌側の一方の面（図２及び４では、舌側面４１７）が内方へと傾斜し、他方の面（本実施形態では、頬側面４１６）が一方の面と平行又はそれよりも外方に傾斜する挿入穴部４１１を有する。 The present invention also provides a support base 41 used as a part of the support member 40 that supports the model teeth 20. In the cross-section of the cheek tongue, the support base 41 has one side on the cheek side or the tongue side (the tongue side surface 417 in FIGS. 2 and 4) inclined inward, and the other surface (in this embodiment, the cheek side surface). 416) has an insertion hole 411 inclined parallel to one surface or outward.
　また、本発明は、歯科模型に用いられるキットも提供する。かかるキットは、歯冠部２１１と、頬舌断面において歯頚部２１３ａ，２１３ｂから下方に広がる歯根部２１５ａ，２１５ｂと、を有する少なくとも一つの模型歯である臼歯２１と、歯頚部２１３ａ，２１３ｂの一部又は全部に当接する介在部材と、を備える。好ましい態様における介在部材４３は、頬舌断面において、歯頚部２１３ａ，２１３ｂのうち、頬側又は舌側の一方側（本実施形態では歯頚部２１３ａ）を包囲し且つ他方側（本実施形態では歯頚部２１３ｂ）を露出させる。ただし、介在部材は、頬舌断面に角度をなす分割面４３６で分割可能な２以上の分割部材４３ａ，４３ｂからなってもよい。このキットにおいて、介在部材４３は、一方側の歯頚部（本実施形態では歯頚部２１３ａ）から歯根部２１５ａの少なくとも一部を包囲することが好ましい。また、介在部材４３は、弾性素材で構成されていることが好ましい。 The present invention also provides a kit used for a dental model. Such a kit includes a molar 21 which is at least one model tooth having a crown portion 211, root portions 215a and 215b extending downward from the neck portions 213a and 213b in the buccal tongue section, and one of the tooth portions 213a and 213b. And an intervening member that abuts all or part. The intervening member 43 in the preferred embodiment surrounds one side of the cheek side or the lingual side (the tooth neck part 213a in the present embodiment) of the tooth neck parts 213a and 213b in the cheek tongue cross section and the other side (the tooth in the present embodiment). The neck 213b) is exposed. However, the interposition member may be composed of two or more split members 43a and 43b that can be split by a split surface 436 that forms an angle with the cheek tongue cross section. In this kit, it is preferable that the interposition member 43 surrounds at least a part of the root portion 215a from the tooth neck portion on one side (the tooth neck portion 213a in this embodiment). Moreover, it is preferable that the interposition member 43 is comprised with the elastic material.
　本発明は前記実施形態に限定されるものではなく、本発明の目的を達成できる範囲での変形、改良等は本発明に含まれるものである。 The present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.
　１０　歯科模型
　２０　模型歯
　２１　臼歯
　２１１　歯冠部
　２１３　歯頚部
　２１５　歯根部
　２３　前歯
　３０　トレイ
　４０　支持部材
　４１　支持台
　４１１　挿入穴部
　４１３　歯肉部
　４１５　貫通孔
　４１６　頬側面
　４１７　舌側面
　４１８　底面
　４３　介在部材
　４３ａ，４３ｂ　分割部材
　４３１　架橋部
　４３３　延出部
　４３５　挿通穴
　４３６　分割面
　４３７　側壁
　４３８　包囲穴部
　５０　固定部材 DESCRIPTION OF SYMBOLS 10 Dental model 20 Model tooth 21 Molar tooth 211 Crown part 213 Tooth neck part 215 Root part 23 Front tooth 30 Tray 40 Support member 41 Support stand 411 Insertion hole part 413 Gingival part 415 Through-hole 416 Buccal side surface 417 Tongue side surface 418 Bottom face 43 Interposition member 43a , 43b Dividing member 431 Bridge portion 433 Extending portion 435 Insertion hole 436 Dividing surface 437 Side wall 438 Surrounding hole portion 50 Fixing member

Claims (13)

  1. 　模型歯と、この模型歯を支持する支持部材と、を備える歯科模型であって、
    　前記模型歯の少なくとも一つは、歯冠部と、頬舌断面において歯頚部から下方に広がる歯根部と、を有し、
    　前記支持部材は、前記歯根部が挿入可能な大きさの挿入穴部を有する支持台と、前記歯頚部と前記挿入穴部との隙間を埋める介在部材と、を有する歯科模型。     A dental model comprising a model tooth and a support member that supports the model tooth,
    At least one of the model teeth has a crown portion and a root portion extending downward from the cervical portion in the buccal tongue section,
    The said support member is a dental model which has the support base which has an insertion hole part of the magnitude | size which can insert the said tooth root part, and the interposition member which fills the clearance gap between the said tooth neck part and the said insertion hole part.
  2. 　前記挿入穴部は、頬舌断面において、頬側又は舌側の一方の面が前記歯頚部から前記歯根部の少なくとも一部に沿い、他方の面が前記一方の面と平行又はそれよりも外方に傾斜する形状を有する請求項１記載の歯科模型。 In the cross-section of the buccal tongue, the insertion hole has one side of the buccal side or the side of the tongue extending along at least a part of the root from the tooth neck, and the other side is parallel to or outside the one side. The dental model according to claim 1, wherein the dental model has a shape inclined toward the direction.
  3. 　前記支持部材は、前記介在部材と前記支持台とを固定する固定部材を更に有する請求項１又は２記載の歯科模型。 The dental model according to claim 1 or 2, wherein the support member further includes a fixing member that fixes the interposition member and the support base.
  4. 　前記介在部材は、前記挿入穴部の底面まで延びる請求項１から３いずれか記載の歯科模型。 The dental model according to any one of claims 1 to 3, wherein the interposition member extends to a bottom surface of the insertion hole.
  5. 　前記介在部材は、前記歯頚部から前記歯根部の少なくとも一部に沿う請求項４記載の歯科模型。 The dental model according to claim 4, wherein the interposition member extends along at least a part of the root from the tooth neck.
  6. 　前記介在部材は、頬舌断面に角度をなす面で分割可能な２以上の分割部材からなる請求項１記載の歯科模型。 The dental model according to claim 1, wherein the interposition member is composed of two or more divided members that can be divided by a plane that forms an angle with the cheek tongue cross section.
  7. 　前記介在部材は、弾性素材で構成され、前記歯頚部及び前記挿入穴部により弾性収縮された状態で前記隙間を埋める請求項１から６いずれか記載の歯科模型。 The dental model according to any one of claims 1 to 6, wherein the interposition member is made of an elastic material and fills the gap in a state of being elastically contracted by the tooth neck portion and the insertion hole portion.
  8. 　模型歯を支持する支持部材の部品として用いられる支持台であって、
    　頬舌断面において、頬側又は舌側の一方の面が内方へと傾斜し、他方の面が前記一方の面と平行又はそれよりも外方に傾斜する挿入穴部を有する支持台。     A support base used as a part of a support member that supports model teeth,
    A support base having an insertion hole portion in which one surface on the buccal side or the tongue side is inclined inward and the other surface is inclined in parallel with or outward from the one surface in the buccal tongue cross section.
  9. 　歯科模型に用いられるキットであって、
    　歯冠部と、頬舌断面において歯頚部から下方に広がる歯根部と、を有する少なくとも一つの模型歯と、
    　前記歯頚部の一部又は全部に当接する介在部材と、を備えるキット。     A kit for a dental model,
    At least one model tooth having a crown portion and a root portion extending downward from the tooth neck in the buccal tongue section;
    An interposition member that contacts a part or all of the tooth neck.
  10. 　前記介在部材は、頬舌断面において、前記歯頚部のうち、頬側又は舌側の一方側を包囲し且つ他方側を露出させる請求項９記載のキット。 10. The kit according to claim 9, wherein the interposition member surrounds one side of the cheek side or the lingual side and exposes the other side of the tooth neck in the cross-section of the cheek tongue.
  11. 　前記介在部材は、前記一方側の前記歯頚部から前記歯根部の少なくとも一部を包囲する請求項１０記載のキット。 The kit according to claim 10, wherein the interposition member surrounds at least a part of the tooth root portion from the tooth neck portion on the one side.
  12. 　前記介在部材は、頬舌断面に角度をなす面で分割可能な２以上の分割部材からなる請求項９記載のキット。 The kit according to claim 9, wherein the interposition member is composed of two or more divided members that can be divided by a plane that forms an angle with the cheek tongue cross section.
  13. 　前記介在部材は、弾性素材で構成されている請求項９から１２いずれか記載のキット。 The kit according to any one of claims 9 to 12, wherein the interposition member is made of an elastic material.
PCT/JP2011/065028 2010-07-01 2011-06-30 Dental model, support base and kit WO2012002487A1 (en)

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Cited By (2)

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WO2020065848A1 (en) * 2018-09-27 2020-04-02 株式会社ニッシン Cast tooth, cast tooth base and dental cast
US20220304783A1 (en) * 2020-08-05 2022-09-29 Nissin Dental Products Inc. Dental model and articulator

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JPH1165426A (en) * 1997-08-12 1999-03-05 Katsuhito Mochizuki Orthodontic training device

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US4242812A (en) * 1979-02-26 1981-01-06 Ivan H. Randoll Typodont having removable teeth
JPH1165426A (en) * 1997-08-12 1999-03-05 Katsuhito Mochizuki Orthodontic training device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020065848A1 (en) * 2018-09-27 2020-04-02 株式会社ニッシン Cast tooth, cast tooth base and dental cast
JPWO2020065848A1 (en) * 2018-09-27 2021-08-30 株式会社ニッシン Model teeth, model tooth stands, and dental models
US11464607B2 (en) 2018-09-27 2022-10-11 Nissin Dental Products Inc. Model teeth, model teeth base, and dental model
JP7229770B2 (en) 2018-09-27 2023-02-28 株式会社ニッシン Tooth model, dental model and dental model
US20220304783A1 (en) * 2020-08-05 2022-09-29 Nissin Dental Products Inc. Dental model and articulator

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