WO2016021050A1 - Base for dental work model - Google Patents

Base for dental work model Download PDF

Info

Publication number
WO2016021050A1
WO2016021050A1 PCT/JP2014/071044 JP2014071044W WO2016021050A1 WO 2016021050 A1 WO2016021050 A1 WO 2016021050A1 JP 2014071044 W JP2014071044 W JP 2014071044W WO 2016021050 A1 WO2016021050 A1 WO 2016021050A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
pin
support base
dental work
work model
Prior art date
Application number
PCT/JP2014/071044
Other languages
French (fr)
Japanese (ja)
Inventor
智恵美 寺本
朗 寺本
Original Assignee
有限会社ダイトク化研
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 有限会社ダイトク化研 filed Critical 有限会社ダイトク化研
Priority to PCT/JP2014/071044 priority Critical patent/WO2016021050A1/en
Priority to JP2016539777A priority patent/JP6381650B2/en
Publication of WO2016021050A1 publication Critical patent/WO2016021050A1/en

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/34—Making or working of models, e.g. preliminary castings, trial dentures; Dowel pins [4]

Definitions

  • the present invention relates to a dental work model base used for dental work such as preparation of a dental prosthesis.
  • the crown to be treated is cut on all sides and coated with cast metal, It is necessary to restore mastication and other physiological functions.
  • the restoration has a complicated form and must satisfy various requirements, so that the restoration cannot be produced directly in the oral cavity. For this reason, the restoration must be manufactured outside the oral cavity, and in order to manufacture the restoration, a working model that reproduces the state in the oral cavity outside the oral cavity is required. The working model must accurately reproduce the abutment tooth, dentition, missing part, and other oral forms.
  • a gypsum model is made by pouring gypsum into the tooth profile taken from the patient's oral cavity, (2) a hole for dowel pin planting is formed in the gypsum model, (3) Pour the instantaneous adhesive into the holes to plant and fix the dowel pins, (4) further form anti-rotation grooves, (5) apply the mold release agent to the lower surface of the plaster model and the surface of the dowel pins, It is pushed into a silicone rubber mold for a support base filled with mud, and after the gypsum paste has hardened, it is demolded to obtain a dental work model.
  • a dental work model made of synthetic resin has been proposed in order to improve workability and realize mass productivity.
  • a plurality of columnar convex portions and columnar concave portions that can be fitted to each other are provided apart from the side edge on the side portion of the opposing surface of the base and the fixed plate, and predetermined in the central portion along the longitudinal direction of the base and the fixed plate.
  • a dowel pin and a connecting hole for inserting the dowel pin are disposed, and the dowel pin is inserted into the connecting hole, the columnar convex portion is inserted into the columnar concave portion, and the fixing plate is connected to a fixed position of the plastic base.
  • Patent Literature 1 The technique described in Patent Literature 1 is based on the premise that the connecting hole can be error in shape and position with respect to the dowel pin to be inserted, and in order to improve the positional deviation between the fixed plate and the base,
  • the fitting between the columnar convex portion and the columnar concave portion is intended to strengthen the connection between the fixing plate and the base, and does not improve the error itself between the connection hole and the dowel pin.
  • the present invention provides a pin (a connecting hole as referred to in the invention of Patent Document 1) in which a pin suspended from the fixed plate and a pin on a support base (a base referred to in the invention of Patent Document 1) are fitted. It is an object of the present invention to provide a dental work model base that can improve the error itself.
  • the dowel pin is to be inserted into the base cylinder, Rather than forming such a cylindrical body surrounding the entire periphery of the dowel pin, a through hole into which the pin is inserted is formed in the flat portion serving as a connecting portion with the fixed plate in the support base, and the back surface side of the flat portion Further, it is found that it is effective to configure a plurality of holding portions that slidably hold the pin on the inner peripheral surface from the periphery of the through hole so as to be suspended from one through hole.
  • the present invention has been completed.
  • the dental work model base includes a fixed plate to which a tooth model is fixed on an upper surface, a pin suspended from the lower surface of the fixed plate, and a detachable attachment to the fixed plate via the pin.
  • a dental work model base comprising a support base to be connected, wherein the support base is formed with a through-hole into which the pin is inserted into a flat portion serving as a connection portion with the fixed plate.
  • a plurality of holding portions that slidably hold the pin on the inner peripheral surface from the periphery of the through hole are provided on the back surface side of the flat portion with respect to one through hole.
  • a plurality of holding portions that slidably hold the pin on the inner peripheral surface thereof from the peripheral edge of the through hole are provided vertically with respect to one through hole. Even if there is a dimensional error with the part, unlike the conventional cylinder that covered the entire circumference of the pin, the measurement error can be confirmed easily and in detail by visual inspection. It is easy to determine how to correct this.
  • the pins are held by a plurality of holding parts, so when the support base is a resin molded product, it is possible to handle each holding part even when designing and adjusting the mold. It is possible to fine-tune only the exact part, and the degree of freedom is high.
  • the fact that the visible area is wider compared to the conventional cylinder that covers and covers the entire circumference of the pin due to the separated portion existing between the holding part and the holding part is advantageous in that cleaning and the like are easy. It leads to.
  • FIG. 4 is a cross-sectional view of the base of the dental work model shown in FIG. 3 taken along the line XX. It is a disassembled perspective view which shows a mode that the division
  • FIG. 1 is an exploded perspective view of a dental work model according to an embodiment of the present invention as viewed from above
  • FIG. 2 is an exploded perspective view of the dental work model as viewed from below
  • the dental work model base 1 includes a fixed plate 10 to which the tooth model 2 is fixed on the upper surface, a pin 20 suspended from the lower surface of the fixed plate 10, and a detachable connection to the fixed plate 10 via the pin 20.
  • the support base 30 is made up of.
  • the fixed plate 10 has a rectangular planar shape so as to match the shape of the tooth model 2.
  • a synthetic resin is preferable as the material of the fixing plate 10.
  • a synthetic resin alone may be used as a material without mixing other materials, but a synthetic resin mixed with an inorganic material is more preferable. This is because, when a synthetic resin mixed with an inorganic material is used as a material, the cutting can be easily performed without a sense of incongruity when the gypsum tooth model 2 made of gypsum is fixed and cut integrally.
  • similar effects can be obtained by mixing organic materials such as wood powder (sawdust), although this is not possible when mixed with inorganic materials.
  • the mixing ratio of the inorganic material is, for example, preferably 50% by weight or less, and more preferably 30 to 40% by weight.
  • the inorganic material preferably has a hardness of 0.5 to 2, and specific examples thereof include gypsum, talc, oyster shell powder, and the like. More specifically, for example, about 30 to 40% by weight of gypsum is mixed in polystyrene resin, and azodicarbonamide cell microphone is added in an amount of 0.7% by weight as an organic foaming agent. And the like prepared by melt-kneading at 200 to 210 ° C. in an injection molding machine and then by low-foaming injection molding.
  • the pin 20 is preferably formed integrally with the fixed plate 10 in terms of production efficiency, but the present invention is fixed to the fixed plate 10 with an adhesive or the like, What is fixed by inserting the upper end of the pin 20 into the hole is not excluded.
  • the material of the pin 20 is the same material as that of the fixing plate 10 when the pin 20 is formed integrally with the fixing plate 10, but is manufactured separately when the pin 20 is implanted in the fixing plate 10. In some cases, a material different from that of the fixed plate 10 may be used. For example, a metal or the like may be used.
  • each of the plurality of pins 20 has an oval shape when viewed from the bottom.
  • the rotation of the fixed plate 10 when inserted into the through hole 32 and the holding portion 33 of the base 30 is suppressed.
  • the bottom view shape of the pin 20 is not limited to an oval shape, and may be an appropriate shape.
  • the shape may be a rectangle or an ellipse, and even when these shapes are adopted, the pin 20 The rotation of the fixed plate 10 is suppressed when the is inserted into the through hole 32 and the holding portion 33 of the support base 30.
  • the pin 20 has a tapered shape (refer to FIG. 4 in particular), and thereby, the pin 20 can be smoothly inserted into the through hole 32 and the holding portion 33.
  • the plurality of pins 20 are suspended in a positional relationship parallel to each other at regular intervals along the longitudinal direction of the fixed plate 10.
  • the tooth model 2 is cut and divided on both sides of each model tooth 2b. Therefore, the pin 20 is arrange
  • the fixed plate 10 is arranged with an appropriate interval from the long end edge and the short end edge of the fixed plate 10.
  • the material of the support base 30 is preferably a synthetic resin. This is because a work process such as pouring gypsum into a mold or the like is not required unlike a conventional support base made of gypsum, and mass production becomes possible.
  • a synthetic resin mixed with an inorganic material may be adopted as in the case of the material of the fixed plate 10, but the material of the support base 30 is a material different from that of the fixed plate 10. It has been confirmed that there is an advantage in adjusting the fitting between the two appropriately. Therefore, it is preferable that the material of the support base 30 is a synthetic resin that does not mix an inorganic material or the like, and the material of the fixing plate 10 is a synthetic resin that mixes an inorganic material or the like.
  • a polystyrene resin prepared by injection molding after melt-kneading in an injection molding machine can be mentioned.
  • the support base 30 may be a low-foamed synthetic resin.
  • a known physical foaming agent or chemical foaming agent can be selected as the foaming agent. It should be noted that precision loss can occur.
  • a through hole 32 into which the pin 20 is inserted is formed in a flat portion 31 that is a connection portion with the fixed plate 10.
  • a holding portion 33 is suspended from the periphery of the through hole 32 on the back surface side of the flat portion 31.
  • the inner peripheral shape of the through hole 32 and the inner peripheral shape of the holding portion 33 are basically designed so as to follow the outer peripheral shape of the pin 20.
  • two holding portions 33 are provided for one through-hole so as to slidably hold both side portions of the pin 20 having an oval shape when viewed from the bottom on its inner peripheral surface. Yes. That is, the holding portion 33A holds the pin side portion 20A, and the holding portion 33B holds the pin side portion 20B slidably on the inner peripheral surface. In this way, the pin 20 can slide with respect to the through hole 32 and the holding portion 33.
  • the total length of the through hole 32 and the holding portion 33 is set slightly shorter than the total length of the pin 20.
  • the tip of the pin 20 has a dimension that protrudes about 1 mm from the tip of the holding portion 33 (see particularly FIG. 4). According to this, there exists an advantage that the operation
  • the fixing plate 10 is provided with recesses 11 between the long end edges and the pins 20 at intervals similar to the arrangement intervals of the pins 20 along the longitudinal direction.
  • the upper surface of the support base 30 is provided with a convex portion 34 that fits into the concave portion 11 of the fixed plate 10. Due to the fitting of the concave portion 11 and the convex portion 34, the connection between the support base 30 and the fixed plate 10 becomes strong.
  • the convex portion 34 has a quadrangular prism-shaped outer shape, but is not limited thereto, and may be, for example, a cylindrical shape, a hemispherical shape, or the like.
  • the concave portion 11 has a shape that matches the outer shape of the convex portion 34. If the shape of the convex portion 34 is different, the shape of the concave portion 11 is also different accordingly.
  • a groove 35 is provided on the upper surface of the support base 30.
  • This groove 35 is useful when cutting the tooth model 2 and the fixed plate 10 in order to divide the divided model 2 a from the tooth model 2. That is, when the fixed plate 10 and the support base 30 are connected, a saw for cutting the tooth model 2 and the fixed plate 10 (for example, a saw for cutting plaster) is disposed in the groove 35 with the blade facing upward. From there, it can be rounded up, and by doing so, the divided model 2a is surely provided with a certain area or more. In particular, in an irregularly arranged tooth, cutting along both sides of each model tooth 2b may not ensure a sufficient bottom area. The significance of securing this is significant.
  • saw teeth are inserted along both sides of the model tooth 2b of the tooth profile model 2 and cut down from above. In that case, it cuts down so that it may lead to the stop position of the saw in the above-mentioned rounding-up process. 8 and 9, the saw path in the cutting-down process is indicated by the symbol B.
  • a position mark 12 for confirming the position of the pin 20 when the tooth model 2 is fixed is formed on the upper surface of the fixing plate 10.
  • the position mark 12 is an oval mark, but is not limited thereto, and may be a double circle mark, a letter, a number, a symbol, or the like.
  • line marks 13 are projected in parallel with the extended lines of the position marks 12. In the state where the tooth model 2 is fixed to the fixed plate 10, the position mark 12 is hidden and cannot be seen. Even in this state, the position of the pin 20 can be confirmed by the line mark 13.
  • the fixing plate 10 is provided on one side, but may be provided on both sides.
  • the line mark 13 is projected, but it may be groove-shaped.
  • the support base 30 includes a peripheral wall 36 that is suspended from the periphery of the flat portion 31.
  • line marks 37 are projected in parallel on the extension lines of the position mark 12 and the line mark 13 of the fixed plate 10. In this embodiment, it is on one side of the support base 30, but it may be provided on both sides as described with respect to the line mark 13 of the fixed plate 10, and it is grooved instead of protruding. Also good.
  • FIG. 10 is a bottom view when the fixed plate 10 is connected to the support base 30. Further, in order to show the difference from the case where the support base 30 provided with the conventional cylindrical body is used, a bottom view when the fixing plate is connected to the support base 300 provided with such a cylindrical body 210 is shown in FIG. Shown in
  • the pin 20 is not covered by the holding portion 33 over the entire periphery thereof. From the gap, the degree of fitting between the pin 20 and the holding portion 33 can be observed. This observation can be performed not only by visual observation but also by an appropriate measuring device (for example, a telescope, a magnifying glass, etc.), so that the fitting condition can be grasped very precisely.
  • an appropriate measuring device for example, a telescope, a magnifying glass, etc.
  • the mold is formed as a divided structure, for example, by visual observation or observation by a measuring instrument.
  • the holding portions 33 evaluated as requiring adjustment individually, and the effect that the degree of freedom in designing and adjusting the mold is greatly improved is also exhibited.
  • the peripheral wall 36 of the support base 30 and the holding portion 33 are connected by a rib 38. Further, the holding portions 33 suspended from the peripheral edge of each through hole 32 are communicated with each other via a rib 38. With such a configuration, the holding portion 33 can be reinforced. In the present embodiment, the ribs 38 are provided in this way. However, in the case where sufficient strength can be secured without providing the ribs 38 by increasing the thickness of the peripheral wall 36 or the holding portion 33, the ribs 38 are provided. 38 may be omitted.
  • FIG. 12 is a front view showing a state in which the base 1 of the dental work model according to the embodiment is connected to the articulator 70.
  • FIG. 13 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 from above
  • FIG. 14 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50. It is the disassembled perspective view which looked at the state which carried out from the upper side.
  • FIG. 15 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 from below
  • FIG. 16 is a perspective view of the dental work model base 1 mounted to the mount 40 and the packing 50. It is the disassembled perspective view which looked at the connected state from the lower side.
  • a mount 40 and a packing 50 are connected to the base 1 of the dental work model, and are further connected to an articulator 70 by a plaster 60.
  • the peripheral wall 36 hangs from the peripheral edge of the flat surface portion 31, but the support base 30 and the mount 40 are formed on the lower edge of the peripheral wall 36 in the support base 30 and the upper surface of the mount 40.
  • the fitting protrusion 41 and the fitting pinching portion 42 are connected by fitting with each other.
  • the mount 40 is made of, for example, a synthetic resin and has a rectangular plate shape in plan view with an upper surface that is slightly larger than the bottom surface of the support base 30. By providing a top surface that is slightly larger than the bottom surface of the support base 30, the dental work model base 1 can be easily attached to and detached from the articulator 70.
  • the fitting protrusion 41 of the mount 40 is fitted to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30.
  • the four corners of the fitting protrusion 41 are chamfered.
  • the fitting sandwiching portion 42 of the mount 40 is disposed at a position corresponding to the four corners of the lower edge of the peripheral wall 36 in the support base 30 and has a cylindrical shape with an upper end having a hemispherical shape.
  • the chamfered portion of the fitting protrusion 41 and the fitting clamping portion 42 are held in a balanced manner at three points.
  • the shape of the fitting sandwiching portion 42 is not limited to a cylindrical shape.
  • the four corners of the fitting protrusion 41 may not be chamfered, and the shape of the fitting pinching portion 42 may be a quadrangular prism shape, a hemispherical shape, or the like.
  • a cylindrical bonding convex portion 43 to be bonded to the gypsum 60 is formed at the center.
  • the bonding convex portion 43 is formed with bonding grooves 431 vertically and horizontally, and the plaster 60 enters the bonding grooves 431.
  • holding protrusions 44 for holding the packing 50 are vertically provided at the short end edges on both sides.
  • the heights of the bonding projection 43 and the holding projection 44 are the same.
  • the packing 50 is interposed between the mount 40 and the plaster 60 when the articulator 70 is mounted on the plaster 60. It is preferable to give the packing 50 flexibility. For this purpose, for example, a flexible material such as synthetic resin or rubber may be used.
  • the packing 50 has a rectangular plate shape in plan view. Also, the length of the short side of the packing 50 is the same as the length of the short side of the mount 40, and the length of the long side of the packing 50 is between the two holding projections 44 of the mount 40. The length is adjusted so as to be fitted and held.
  • the thickness of the packing 50 is set to be the same as the heights of the adhesive projection 43 and the holding projection 44 of the mount 40. In the center of the packing 50, a fitting hole 51 having the same size as the bonding convex portion 43 of the mount 40 is formed.
  • the packing 50 By using the packing 50, the amount of plaster 60 used when the dental work model base 1 is mounted on the articulator 70 can be suppressed to a minimum amount. Moreover, the packing 50 is provided with flexibility, so that the work of removing the base 1 of the dental work model from the articulator 70 is easy.
  • the groove 35 is formed on the upper surface of the support base 30, but it may be formed on the lower surface of the fixed plate, or the upper surface of the support base and the lower surface of the fixed plate You may make it form in both.
  • these grooves can be formed so as to face each other.
  • the fixing plate 10 and the support base 30 are connected and fixed with sufficient balance by fitting with the pin 20, the through-hole 32, and the holding
  • the pin 20 and the through-hole 32 and the holding portion 33 can be sufficiently fixed, the concave portion 11 and the convex portion 34 may not be provided.
  • the pin 20 can be sufficiently fixed only by fitting with the convex portion 34, it is not essential that the pin 20, the through hole 32, and the holding portion 33 are closely fixed.
  • the peripheral wall 36 of the support base 30 and the holding portion 33 are connected by the rib 38, and the holding portions 33 that are suspended from the peripheral edge of each through hole 32 are communicated with each other via the rib 38.
  • the holding portion 33 is configured to be reinforced.
  • maintenance part 33 is exhibiting rectangular shape evidently from FIG. 2, FIG.
  • a triangular rib can be adopted as a rib for connecting the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction. 17 and 18 show a modification of such a rib.
  • FIG. 17 shows the support base 30 shown in FIG.
  • FIG. 18 shows only the shape of the rib that connects the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction in the base 1 of the dental work model shown in FIG. 17 and 18, the rib 38A that connects the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction has a triangular shape.
  • the rib 38A has a support base on one side. 30 in contact with the peripheral wall 36 of one side, and in contact with the back surface of the flat part 31 of the support base 30 on one side, but is not in contact with the holding part 33 of the support base 30. This is different from the embodiment shown.
  • the holding portion 33 of the support base 30 Since the holding portion 33 of the support base 30 is not in contact, the holding portion 33 can spread on both sides. Therefore, the operation of inserting the pin 20 into the holding portion 33 becomes smoother, and even if there is a slight dimensional error between the pin 20 and the holding portion 33, the holding portion 33 spreads on both sides, and the pin 20 Is expected to be possible.
  • the holding portion 33 can be expanded on both sides, and the reinforcing effect by the fixing rib 38 ⁇ / b> A can be secured to a certain extent.
  • a cylinder 330 as shown in FIG. 11 the entire circumference is continuous so as to surround the entire surface of the pin.
  • the base 1 of the dental work model according to the above embodiment is for a deviated jaw
  • the present invention is also applicable to the entire jaw.
  • the base of the dental work model may be configured in a horseshoe shape. This will be described below with reference to FIGS.
  • the description which overlaps with the content already demonstrated is omitted suitably.
  • the support base 30 is formed on the back surface side of the flat portion 31 from the periphery of the through hole 32 to the inner periphery thereof, as shown in FIG.
  • a plurality of holding portions 33 that slidably hold the pins 20 are provided vertically with respect to one through hole.
  • FIG. 19 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
  • FIG. 20 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
  • the support base 30 is divided into two at the center of the front tooth portion into a support base 30A and a support base 30B.
  • the fitting protrusion 41 that fits to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30 is also replaced with the fitting protrusion 41A and the fitting protrusion 41B. It is divided into two. Except for the above points, there is no difference from the embodiment shown in FIG.
  • FIG. 21 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
  • the support base 30 is divided into three parts: a support base 30C, a support base 30D, and a support base 30E.
  • the fitting protrusion 41 which is fitted to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30 is also fitted with the fitting protrusion 41C and the fitting protrusion 41D.
  • the fitting protrusion 41E is divided into three.
  • the fixed plate 10 includes a fixed plate 10A and a fixed plate 10B, and does not include a portion corresponding to the front tooth portion.
  • a fixed plate 10A is detachably connected to the support base 30C
  • a fixed plate 10B is detachably connected to the support base 30D via pins 20, respectively.
  • the support base 30E corresponds to the front tooth portion, and when the fixed plate 10A and the support base 30C are connected to the fixed plate 10B and the support base 30D via the pins 20, respectively, the upper surface of the fixed plate 10A is fixed.
  • the height is higher than the support base 30C and the support base 30D by the thickness of the fixed plate 10 so that the upper surface of the plate 10B and the upper surface of the support base 30E are flush with each other.
  • the upper surface of the fixed plate 10A, the upper surface of the fixed plate 10B, and the upper surface of the support base 30E are configured to be flush with each other, so that the horseshoe-shaped tooth model can be fixed without difficulty. Except for the above points, there is no difference from the embodiment shown in FIG.
  • FIG. 22 also relates to a base of a three-part horseshoe-shaped dental work model.
  • FIG. 22 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above. However, it differs from the embodiment of FIG. 21 in the following points. That is, in the present embodiment, the support base 30 does not include the support base 30E corresponding to the front tooth portion as in the embodiment shown in FIG. Are provided integrally with the mount 40. Except for the above points, there is no difference from the embodiment shown in FIG.
  • the support base 30 is shown in FIG. It is sufficient to change to the base 30A and the support base 30B, and to change the mount 40 to one having the fitting protrusion 41A and the fitting protrusion 41B, and the fixing plate 10 and the packing 50 are already held. You can use things. Thus, the point that the same member can be used repeatedly including between different embodiments is preferable in terms of cost and waste reduction.
  • the present invention can be widely used for dental work as a base for a dental work model for the production of dental prostheses and the production of dentures.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

Provided is a base for a dental work model, said base being capable of easily improving an error between a pin which is vertically mounted to a fixation plate and a part, into which the pin is to be inserted, of a supporting base. The base (1) for a dental work model comprising a fixation plate (10), on the upper surface of which a tooth model (2) is fixed, pins (20) which are vertically mounted to the lower surface of the fixation plate (10), and a supporting base (30) which is detachably connected to the fixation plate (10) via the pins (20), characterized in that: in a plane part (31) of the supporting base (30), said plane part serving as a connecting part to the fixation plate (10), through holes (32), into which the pins (20) are to be inserted respectively, are formed; and, on the back side of the plane part (31), two or more holding parts (33), for each of the through holes (32), are vertically mounted from the peripheral edge of the through holes (32) so that the pins (20) are slidably held in the inner peripheral surface of the through holes.

Description

歯科作業模型の基台Dental work model base
　本発明は、歯科補綴物等の作製等の歯科作業に用いる歯科作業模型の基台に関する。 The present invention relates to a dental work model base used for dental work such as preparation of a dental prosthesis.
　人間の歯の歯質の一部または大部分が、齲蝕あるいはその他の原因によって欠損している場合に、処置する歯冠は、その全ての面を切削し、鋳造された金属で被覆して、咀嚼その他の生理的機能を回復することを必要とする。そのための修復物は、複雑な形態をもち、さまざまな要件を満たさなければならないため、修復物は、口腔内で直接製作することは不可能である。このために、修復物は、口腔外で製作されなければならないが、その製作のためには口腔内の状態を口腔外に再現した作業模型を必要とする。その作業模型は、支台歯、歯列、欠損部その他の口腔内の形態を正確に再現したものでなければならない。 When part or most of the tooth quality of a human tooth is missing due to caries or other causes, the crown to be treated is cut on all sides and coated with cast metal, It is necessary to restore mastication and other physiological functions. For this purpose, the restoration has a complicated form and must satisfy various requirements, so that the restoration cannot be produced directly in the oral cavity. For this reason, the restoration must be manufactured outside the oral cavity, and in order to manufacture the restoration, a working model that reproduces the state in the oral cavity outside the oral cavity is required. The working model must accurately reproduce the abutment tooth, dentition, missing part, and other oral forms.
　従来、歯科補綴物製作時には、（１）患者の口腔からとった歯形に石膏を流して石膏模型を作製し、（２）前記石膏模型にダウエルピン植立のための孔を形成し、（３）前記孔に瞬間接着剤を流し込んで、ダウエルピンを植立・固定し、（４）さらに回転防止溝を形成し、（５）石膏模型の下面とダウエルピンの表面に離型剤を塗布し、予め石膏泥を充填した支持基台用のシリコーンゴム型に押し込み、石膏ペーストが硬化した後、脱型して歯科作業模型とする。 Conventionally, when producing a dental prosthesis, (1) a gypsum model is made by pouring gypsum into the tooth profile taken from the patient's oral cavity, (2) a hole for dowel pin planting is formed in the gypsum model, (3) Pour the instantaneous adhesive into the holes to plant and fix the dowel pins, (4) further form anti-rotation grooves, (5) apply the mold release agent to the lower surface of the plaster model and the surface of the dowel pins, It is pushed into a silicone rubber mold for a support base filled with mud, and after the gypsum paste has hardened, it is demolded to obtain a dental work model.
　さらに、最近では、作業性を向上させ、また量産性を実現するため、合成樹脂製の歯科作業模型の提案もなされている。
　例えば、土台と固定プレートとの対向面の側部に、互いに嵌着できる複数の柱状凸部と柱状凹部を側縁から離れて設けると共に、土台と固定プレートの長手方向に沿って中央部に所定の間隔離して、ダウエルピンと、このダウエルピンを挿入する連結穴を配設し、ダウエルピンを連結穴に、柱状凸部を柱状凹部に挿入して、固定プレートをプラスチック製の土台の定位置に連結することとして、土台をプラスチックで均一に多量生産しながら、固定プレートを土台の定位置にしっかりと連結できるとされる歯科技工用作業模型が提案されている（特許文献１参照）。
　この技術は、プラスチック製の土台において、連結穴が、直接に挿入するダウエルピンではなく、金型に設けている成形ピンで成形されるために、挿入するダウエルピンに対して形状や位置に誤差ができ、このため、ダウエルピンを連結穴に挿入して固定プレートを土台に連結する状態で、固定プレートを土台の定位置にしっかりと連結するのが難しいという問題を克服するものであるとされる。 Furthermore, recently, a dental work model made of synthetic resin has been proposed in order to improve workability and realize mass productivity.
For example, a plurality of columnar convex portions and columnar concave portions that can be fitted to each other are provided apart from the side edge on the side portion of the opposing surface of the base and the fixed plate, and predetermined in the central portion along the longitudinal direction of the base and the fixed plate. A dowel pin and a connecting hole for inserting the dowel pin are disposed, and the dowel pin is inserted into the connecting hole, the columnar convex portion is inserted into the columnar concave portion, and the fixing plate is connected to a fixed position of the plastic base. As a matter of fact, there has been proposed a dental technician working model capable of firmly connecting a fixed plate to a fixed position of a base while uniformly mass-producing the base with plastic (see Patent Document 1).
In this technology, in the plastic base, the connecting hole is formed by the molding pin provided in the mold, not directly by the dowel pin to be inserted, so that there is an error in the shape and position with respect to the inserted dowel pin. For this reason, it is said that the problem that it is difficult to firmly connect the fixed plate to the fixed position of the base in the state where the dowel pin is inserted into the connecting hole and the fixed plate is connected to the base.
特許第５１６４２３３号公報Japanese Patent No. 5164233
　上記特許文献１に記載の技術は、連結穴が、挿入するダウエルピンに対して形状や位置に誤差ができるということを前提とした上で、それによる固定プレートと土台の位置ずれを改善するべく、柱状凸部と柱状凹部の嵌合により、固定プレートと土台との連結を強固にしようとするものであり、連結穴とダウエルピンとの間の誤差自体を改善するものではない。 The technique described in Patent Literature 1 is based on the premise that the connecting hole can be error in shape and position with respect to the dowel pin to be inserted, and in order to improve the positional deviation between the fixed plate and the base, The fitting between the columnar convex portion and the columnar concave portion is intended to strengthen the connection between the fixing plate and the base, and does not improve the error itself between the connection hole and the dowel pin.
　そこで、本発明は、固定プレートに垂設されたピンと、支持基台（特許文献１の発明でいうところの土台）におけるピンが嵌挿される部分（特許文献１の発明でいうところの連結穴）との誤差自体を改善し得る歯科作業模型の基台を提供することを目的とする。 Therefore, the present invention provides a pin (a connecting hole as referred to in the invention of Patent Document 1) in which a pin suspended from the fixed plate and a pin on a support base (a base referred to in the invention of Patent Document 1) are fitted. It is an object of the present invention to provide a dental work model base that can improve the error itself.
　本発明者らは、上記課題を解決するために鋭意研究を重ね、その結果、特許文献１の歯科技工用作業模型では、ダウエルピンは、土台の筒体内に挿入されることとなっているが、ダウエルピンの周囲全面を囲うこのような筒体を形成するのではなく、支持基台において、固定プレートとの連結部となる平面部にピンが嵌挿される貫通孔を形成し、平面部の裏面側に、前記貫通孔の周縁から、その内周面で前記ピンを摺動可能に保持する保持部が１つの貫通孔に対して複数垂設されるように構成することが有効であることを見出し、本発明を完成するに至った。 In order to solve the above problems, the present inventors have repeated intensive studies, and as a result, in the dental technician work model of Patent Document 1, the dowel pin is to be inserted into the base cylinder, Rather than forming such a cylindrical body surrounding the entire periphery of the dowel pin, a through hole into which the pin is inserted is formed in the flat portion serving as a connecting portion with the fixed plate in the support base, and the back surface side of the flat portion Further, it is found that it is effective to configure a plurality of holding portions that slidably hold the pin on the inner peripheral surface from the periphery of the through hole so as to be suspended from one through hole. The present invention has been completed.
　すなわち、本発明にかかる歯科作業模型の基台は、上面に歯形模型が固定される固定プレートと、前記固定プレートの下面に垂設されたピンと、前記固定プレートに前記ピンを介して着脱自在に連結される支持基台とからなる歯科作業模型の基台であって、前記支持基台は、前記固定プレートとの連結部となる平面部に前記ピンが嵌挿される貫通孔が形成されており、前記平面部の裏面側には、前記貫通孔の周縁から、その内周面で前記ピンを摺動可能に保持する保持部が１つの貫通孔に対して複数垂設されている、ことを特徴とする。 That is, the dental work model base according to the present invention includes a fixed plate to which a tooth model is fixed on an upper surface, a pin suspended from the lower surface of the fixed plate, and a detachable attachment to the fixed plate via the pin. A dental work model base comprising a support base to be connected, wherein the support base is formed with a through-hole into which the pin is inserted into a flat portion serving as a connection portion with the fixed plate. In addition, a plurality of holding portions that slidably hold the pin on the inner peripheral surface from the periphery of the through hole are provided on the back surface side of the flat portion with respect to one through hole. Features.
　本発明によれば、支持基台において、貫通孔の周縁から、その内周面でピンを摺動可能に保持する保持部が１つの貫通孔に対して複数垂設されているので、ピンと保持部との間に寸法誤差があっても、ピンの全周を覆い隠していた従来の筒体とは異なって、その測定誤差を目視によって容易かつ詳細に確認することができ、寸法誤差をどのように是正するべきかを容易に判断することができる。
　しかも、従来の筒体と異なり、複数の保持部によってピンを保持するので、特に、支持基台が樹脂成形品である場合において、金型の設計や調整の際にも、保持部ごとの対応が可能で、的確な箇所のみを微調整することができ、自由度が高い。
　また、保持部と保持部の間に存在する離間部分により、ピンの全周を覆い隠していた従来の筒体と比べて、目視できる領域が広いということは、清掃等が容易であるという利点にも繋がる。 According to the present invention, in the support base, a plurality of holding portions that slidably hold the pin on the inner peripheral surface thereof from the peripheral edge of the through hole are provided vertically with respect to one through hole. Even if there is a dimensional error with the part, unlike the conventional cylinder that covered the entire circumference of the pin, the measurement error can be confirmed easily and in detail by visual inspection. It is easy to determine how to correct this.
In addition, unlike conventional cylinders, the pins are held by a plurality of holding parts, so when the support base is a resin molded product, it is possible to handle each holding part even when designing and adjusting the mold. It is possible to fine-tune only the exact part, and the degree of freedom is high.
In addition, the fact that the visible area is wider compared to the conventional cylinder that covers and covers the entire circumference of the pin due to the separated portion existing between the holding part and the holding part is advantageous in that cleaning and the like are easy. It leads to.
本発明の一実施形態に係る歯科作業模型の基台を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the base of the dental work model concerning one embodiment of the present invention from the upper part. 本発明の一実施形態に係る歯科作業模型の基台を下側から見た分解斜視図である。It is the disassembled perspective view which looked at the base of the dental work model concerning one embodiment of the present invention from the lower side. 本発明の一実施形態に係る歯科作業模型の基台の断面図である。It is sectional drawing of the base of the dental work model which concerns on one Embodiment of this invention. 図３に示す歯科作業模型の基台のＸ－Ｘ線断面図である。FIG. 4 is a cross-sectional view of the base of the dental work model shown in FIG. 3 taken along the line XX. 本発明の一実施形態に係る歯科作業模型の基台から分割模型を取り出した様子を示す分解斜視図である。It is a disassembled perspective view which shows a mode that the division | segmentation model was taken out from the base of the dental work model which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯科作業模型の基台に歯科作業模型を固定した状態において、分割模型を切り出す様子を示す上面図である。It is a top view which shows a mode that a division | segmentation model is cut out in the state which fixed the dental work model to the base of the dental work model which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯科作業模型の基台に歯科作業模型を固定した状態において、分割模型を切り出す様子を示す正面図である。It is a front view which shows a mode that a division | segmentation model is cut out in the state which fixed the dental work model to the base of the dental work model which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯科作業模型の基台に歯科作業模型を固定した状態において、分割模型を切り出す様子を示す上面図である。It is a top view which shows a mode that a division | segmentation model is cut out in the state which fixed the dental work model to the base of the dental work model which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯科作業模型の基台に歯科作業模型を固定した状態において、分割模型を切り出す様子を示す正面図である。It is a front view which shows a mode that a division | segmentation model is cut out in the state which fixed the dental work model to the base of the dental work model which concerns on one Embodiment of this invention. 本発明の一実施形態に係る歯科作業模型の基台の底面図である。It is a bottom view of the base of the dental work model concerning one embodiment of the present invention. 本発明の構成を満たさない歯科作業模型の基台の底面図である。It is a bottom view of the base of the dental work model which does not satisfy the configuration of the present invention. 本発明の一実施形態に係る歯科作業模型の基台を咬合器と連結した状態を示す正面図である。It is a front view which shows the state which connected the base of the dental work model which concerns on one Embodiment of this invention with the articulator. 本発明の一実施形態に係る歯科作業模型の基台をマウント及びパッキンと連結した状態を上側から見た斜視図である。It is the perspective view which looked at the state which connected the base of the dental work model concerning one embodiment of the present invention with the mount and packing from the upper part. 本発明の一実施形態に係る歯科作業模型の基台をマウント及びパッキンと連結した状態を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base of the dental work model concerning one embodiment of the present invention with the mount and packing from the upper part. 本発明の一実施形態に係る歯科作業模型の基台をマウント及びパッキンと連結した状態を下側から見た斜視図である。It is the perspective view which looked at the state which connected the base of the dental work model concerning one embodiment of the present invention with the mount and packing from the lower side. 本発明の一実施形態に係る歯科作業模型の基台をマウント及びパッキンと連結した状態を下側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base of the dental work model which concerns on one Embodiment of this invention with the mount and packing from the lower side. リブの変形例を示す、歯科作業模型の基台の断面図である。It is sectional drawing of the base of a dental work model which shows the modification of a rib. リブの変形例を示す、歯科作業模型の基台の支持基台を下側から見た斜視図である。It is the perspective view which looked at the support base of the base of a dental work model which shows the modification of a rib from the lower side. 本発明の一実施形態に係る馬蹄形の歯科作業模型の基台をマウント及びパッキンと連結した状態を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base of the horseshoe-shaped dental work model which concerns on one Embodiment of this invention with the mount and packing from the upper side. 本発明の一実施形態に係る馬蹄形の歯科作業模型の基台（２分割）をマウント及びパッキンと連結した状態を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base (two divisions) of the horseshoe-shaped dental work model which concerns on one Embodiment of this invention with the mount and packing. 本発明の一実施形態に係る馬蹄形の歯科作業模型の基台（３分割）をマウント及びパッキンと連結した状態を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base (three divisions) of the horseshoe-shaped dental work model which concerns on one Embodiment of this invention with the mount and packing. 本発明の一実施形態に係る馬蹄形の歯科作業模型の基台（３分割）をマウント及びパッキンと連結した状態を上側から見た分解斜視図である。It is the disassembled perspective view which looked at the state which connected the base (three divisions) of the horseshoe-shaped dental work model which concerns on one Embodiment of this invention with the mount and packing.
　以下、本発明にかかる歯科作業模型の基台について、図面を参照しつつ詳しく説明するが、本発明の範囲はこれらの説明に拘束されることはなく、以下の例示以外についても、本発明の趣旨を損なわない範囲で適宜変更実施し得る。 Hereinafter, the base of the dental work model according to the present invention will be described in detail with reference to the drawings. However, the scope of the present invention is not limited to these descriptions, and other than the following examples, Changes can be made as appropriate without departing from the spirit of the invention.
　図１は本発明の一実施形態に係る歯科作業模型を上側から見た分解斜視図、図２は下側から見た分解斜視図、図３は断面図である。図４は、図３におけるＸ－Ｘ線断面図である。 1 is an exploded perspective view of a dental work model according to an embodiment of the present invention as viewed from above, FIG. 2 is an exploded perspective view of the dental work model as viewed from below, and FIG. 3 is a cross-sectional view. 4 is a cross-sectional view taken along line XX in FIG.
　歯科作業模型の基台１は、上面に歯形模型２が固定される固定プレート１０と、固定プレート１０の下面に垂設されたピン２０と、固定プレート１０にピン２０を介して着脱自在に連結される支持基台３０とからなる。 The dental work model base 1 includes a fixed plate 10 to which the tooth model 2 is fixed on the upper surface, a pin 20 suspended from the lower surface of the fixed plate 10, and a detachable connection to the fixed plate 10 via the pin 20. The support base 30 is made up of.
　この実施形態において、固定プレート１０は、歯形模型２の形状に合うように、長方形の平面形状を備えている。 In this embodiment, the fixed plate 10 has a rectangular planar shape so as to match the shape of the tooth model 2.
　固定プレート１０の材料としては、合成樹脂が好ましい。他の材料を混入させずに合成樹脂のみを材料としても良いが、無機材料を混入させた合成樹脂がより好ましい。無機材料を混入させた合成樹脂を材料とすると、石膏製の歯形模型２と固定して一体的に切断する際に、この切断を、違和感なく容易になし得るからである。また、無機材料を混入した場合には及ばないものの、木材の粉（おがくず）などの有機材料を混入させることによっても、類似の効果が得られる。さらに、無機材料と有機材料の両方を混入させても良い。 As the material of the fixing plate 10, a synthetic resin is preferable. A synthetic resin alone may be used as a material without mixing other materials, but a synthetic resin mixed with an inorganic material is more preferable. This is because, when a synthetic resin mixed with an inorganic material is used as a material, the cutting can be easily performed without a sense of incongruity when the gypsum tooth model 2 made of gypsum is fixed and cut integrally. In addition, similar effects can be obtained by mixing organic materials such as wood powder (sawdust), although this is not possible when mixed with inorganic materials. Furthermore, you may mix both an inorganic material and an organic material.
　無機材料を混入させた合成樹脂を材料とする場合において、無機材料の混入割合は、例えば、５０重量％以下であることが好ましく、３０～４０重量％であることが好ましい。また、無機材料は、硬度０．５～２のものが好ましく、具体的には、例えば、石膏、タルク、牡蠣の貝殻の粉などが好ましく挙げられる。
　より具体的には、例えば、ポリスチレン樹脂に、石膏を３０～４０重量％程度混入させ、有機系発泡剤としてアゾジカルボンアミドのセルマイクを０．７重量％の割合で添加し、そのような分散混合物を、射出成形機内で２００～２１０℃で溶融混練したのち、低発泡の射出成形によって作製したものなどが挙げられる。 In the case of using a synthetic resin mixed with an inorganic material as a material, the mixing ratio of the inorganic material is, for example, preferably 50% by weight or less, and more preferably 30 to 40% by weight. The inorganic material preferably has a hardness of 0.5 to 2, and specific examples thereof include gypsum, talc, oyster shell powder, and the like.
More specifically, for example, about 30 to 40% by weight of gypsum is mixed in polystyrene resin, and azodicarbonamide cell microphone is added in an amount of 0.7% by weight as an organic foaming agent. And the like prepared by melt-kneading at 200 to 210 ° C. in an injection molding machine and then by low-foaming injection molding.
　ピン２０は、固定プレート１０に一体的に成形されたものが生産効率等の点で好ましいが、本発明は、固定プレート１０に接着剤などで固定されたり、固定プレート１０に孔を開け、当該孔にピン２０の上端を挿入することにより固定されたりしたものを排除するものではない。 The pin 20 is preferably formed integrally with the fixed plate 10 in terms of production efficiency, but the present invention is fixed to the fixed plate 10 with an adhesive or the like, What is fixed by inserting the upper end of the pin 20 into the hole is not excluded.
　ピン２０の材料は、ピン２０を固定プレート１０と一体的に成形する場合には、固定プレート１０と同様の材料となるが、固定プレート１０にピン２０を植設する場合など、別個に製造する場合においては、固定プレート１０と異なる材料であっても良く、例えば、金属などを材料としたものであってもよい。 The material of the pin 20 is the same material as that of the fixing plate 10 when the pin 20 is formed integrally with the fixing plate 10, but is manufactured separately when the pin 20 is implanted in the fixing plate 10. In some cases, a material different from that of the fixed plate 10 may be used. For example, a metal or the like may be used.
　また、複数のピン２０は、図２に見るように（後述の図１０も参照）、それぞれ、底面視長円状であるが、このように非円状であることで、ピン２０を支持基台３０の貫通孔３２及び保持部３３に挿入したときの固定プレート１０の回転が抑制される。もっとも、ピン２０の底面視形状は、長円状に限られるものではなく、適宜の形状とすることができ、例えば、長方形や楕円形としてもよく、これらの形状を採用した場合も、ピン２０を支持基台３０の貫通孔３２及び保持部３３に挿入したときの固定プレート１０の回転が抑制される。 In addition, as shown in FIG. 2 (see also FIG. 10 described later), each of the plurality of pins 20 has an oval shape when viewed from the bottom. The rotation of the fixed plate 10 when inserted into the through hole 32 and the holding portion 33 of the base 30 is suppressed. However, the bottom view shape of the pin 20 is not limited to an oval shape, and may be an appropriate shape. For example, the shape may be a rectangle or an ellipse, and even when these shapes are adopted, the pin 20 The rotation of the fixed plate 10 is suppressed when the is inserted into the through hole 32 and the holding portion 33 of the support base 30.
　ピン２０は、先細りのテーパ状となっており（特に、図４参照）、これにより、支持基台３０の貫通孔３２及び保持部３３への挿入がスムーズに行い得るものとなっている。
　複数のピン２０は、固定プレート１０の長手方向に沿って一定間隔をあけて、互いに平行な位置関係で垂設されている。
　ここで、歯形模型２は、図５に示すように、各模型歯２ｂの両側に切断されて分割される。
　そのため、各分割模型２ａにピン２０が配置され、分割模型２ａの各々が支持基台３０に着脱自在となるように構成されている。
　固定プレート１０に対する複数のピン２０の位置関係としては、固定プレート１０の長端縁及び短端縁と適宜の間隔をあけて配置されている。 The pin 20 has a tapered shape (refer to FIG. 4 in particular), and thereby, the pin 20 can be smoothly inserted into the through hole 32 and the holding portion 33.
The plurality of pins 20 are suspended in a positional relationship parallel to each other at regular intervals along the longitudinal direction of the fixed plate 10.
Here, as shown in FIG. 5, the tooth model 2 is cut and divided on both sides of each model tooth 2b.
Therefore, the pin 20 is arrange | positioned at each division | segmentation model 2a, and each division | segmentation model 2a is comprised so that attachment or detachment to the support base 30 is possible.
As a positional relationship of the plurality of pins 20 with respect to the fixed plate 10, the fixed plate 10 is arranged with an appropriate interval from the long end edge and the short end edge of the fixed plate 10.
　支持基台３０の材料は、合成樹脂が好ましい。従来の石膏製の支持基台のように、型枠等に石膏を流し込むなどの作業工程が不要であり、また、量産が可能となるからである。
　支持基台３０の材料として、固定プレート１０の材料と同様に、無機材料を混入した合成樹脂を採用することしても良いが、支持基台３０の材料は、固定プレート１０とは異なった材料であることが、両者の適度な嵌合の調節を行う上で有利であることが確認できている。
　従って、好ましくは、支持基台３０の材料は無機材料等を混入しない合成樹脂とし、固定プレート１０の材料は無機材料等を混入した合成樹脂とするのが良い。
　具体的に好ましい例を挙げれば、例えば、ポリスチレン樹脂を射出成形機内で溶融混練したのち、射出成形によって作製したものが挙げられる。 The material of the support base 30 is preferably a synthetic resin. This is because a work process such as pouring gypsum into a mold or the like is not required unlike a conventional support base made of gypsum, and mass production becomes possible.
As the material of the support base 30, a synthetic resin mixed with an inorganic material may be adopted as in the case of the material of the fixed plate 10, but the material of the support base 30 is a material different from that of the fixed plate 10. It has been confirmed that there is an advantage in adjusting the fitting between the two appropriately.
Therefore, it is preferable that the material of the support base 30 is a synthetic resin that does not mix an inorganic material or the like, and the material of the fixing plate 10 is a synthetic resin that mixes an inorganic material or the like.
Specifically, for example, a polystyrene resin prepared by injection molding after melt-kneading in an injection molding machine can be mentioned.
　なお、支持基台３０は合成樹脂を低発泡させたものであってもよく、この場合、発泡剤として公知の物理発泡剤や化学発泡剤を選択することができるが、発泡率上昇に伴って精密度低下が起こり得ることに留意するべきである。 Note that the support base 30 may be a low-foamed synthetic resin. In this case, a known physical foaming agent or chemical foaming agent can be selected as the foaming agent. It should be noted that precision loss can occur.
　支持基台３０は、固定プレート１０との連結部となる平面部３１に、ピン２０が嵌挿される貫通孔３２が形成されている。
　支持基台３０は、平面部３１の裏面側に、貫通孔３２の周縁から保持部３３が垂設されている。
　貫通孔３２の内周形状及び保持部３３の内周形状は、基本的にピン２０の外周形状に沿うように設計されている。
　本実施形態では、保持部３３は、その内周面で底面視長円状のピン２０の両側部のそれぞれを摺動可能に保持するように、１つの貫通孔に対して２つ設けられている。すなわち、保持部３３Ａがピンの側部２０Ａを、保持部３３Ｂがピンの側部２０Ｂを、それぞれ、内周面で摺動可能に保持している。
　このようにして、ピン２０が貫通孔３２及び保持部３３に対し摺動可能となっている。 In the support base 30, a through hole 32 into which the pin 20 is inserted is formed in a flat portion 31 that is a connection portion with the fixed plate 10.
In the support base 30, a holding portion 33 is suspended from the periphery of the through hole 32 on the back surface side of the flat portion 31.
The inner peripheral shape of the through hole 32 and the inner peripheral shape of the holding portion 33 are basically designed so as to follow the outer peripheral shape of the pin 20.
In the present embodiment, two holding portions 33 are provided for one through-hole so as to slidably hold both side portions of the pin 20 having an oval shape when viewed from the bottom on its inner peripheral surface. Yes. That is, the holding portion 33A holds the pin side portion 20A, and the holding portion 33B holds the pin side portion 20B slidably on the inner peripheral surface.
In this way, the pin 20 can slide with respect to the through hole 32 and the holding portion 33.
　なお、貫通孔３２及び保持部３３の合計長さは、ピン２０の全長よりも若干短く設定されている。具体的には、例えば、ピン２０を嵌挿した状態において、ピン２０の先端が保持部３３の先端よりも１ｍｍ程度突出するような寸法となっている（特に、図４参照）。これによれば、当該突出部を下から押し上げることにより、貫通孔３２及び保持部３３からピン２０を取り出す作業がしやすいという利点がある。 Note that the total length of the through hole 32 and the holding portion 33 is set slightly shorter than the total length of the pin 20. Specifically, for example, in a state where the pin 20 is inserted, the tip of the pin 20 has a dimension that protrudes about 1 mm from the tip of the holding portion 33 (see particularly FIG. 4). According to this, there exists an advantage that the operation | work which takes out the pin 20 from the through-hole 32 and the holding | maintenance part 33 is easy by pushing up the said protrusion part from the bottom.
　固定プレート１０は、その長端縁とピン２０との間に、長手方向に沿って、ピン２０の配置間隔と同様の間隔で、凹部１１が設けられている。
　一方、支持基台３０の上面には、固定プレート１０の凹部１１と嵌り合う凸部３４が設けられている。
　この凹部１１と凸部３４との嵌合により、支持基台３０と固定プレート１０の連結が強固なものとなる。
　本実施形態では、凸部３４は、四角柱状の外形を備えているが、これに限定されるものではなく、例えば、円柱状、半球状等であってもよい。
　凹部１１は、凸部３４の外形に適合する形状としている。凸部３４の形状が異なれば、それに応じて凹部１１の形状も異なったものとなる。 The fixing plate 10 is provided with recesses 11 between the long end edges and the pins 20 at intervals similar to the arrangement intervals of the pins 20 along the longitudinal direction.
On the other hand, the upper surface of the support base 30 is provided with a convex portion 34 that fits into the concave portion 11 of the fixed plate 10.
Due to the fitting of the concave portion 11 and the convex portion 34, the connection between the support base 30 and the fixed plate 10 becomes strong.
In the present embodiment, the convex portion 34 has a quadrangular prism-shaped outer shape, but is not limited thereto, and may be, for example, a cylindrical shape, a hemispherical shape, or the like.
The concave portion 11 has a shape that matches the outer shape of the convex portion 34. If the shape of the convex portion 34 is different, the shape of the concave portion 11 is also different accordingly.
　支持基台３０の上面には、溝３５が設けられている。
　この溝３５は、歯形模型２から分割模型２ａを分割するため、歯形模型２及び固定プレート１０を切断する際に有用である。
　すなわち、固定プレート１０と支持基台３０を連結したときに、歯形模型２及び固定プレート１０を切断するための鋸（例えば、石膏切断用の糸鋸）を、刃を上向きにして溝３５に配置し、そこから切り上げていくことができ、そうすることで、分割模型２ａが、確実に一定以上の底面積を備えたものとなる。
　特に、不正配列歯において、各模型歯２ｂの両側に沿って切断するのでは、十分な底面積を確保できないことがあるため、上記のようにして下側から切り上げて一定以上の底面積を確実に確保することの意義は大きい。 A groove 35 is provided on the upper surface of the support base 30.
This groove 35 is useful when cutting the tooth model 2 and the fixed plate 10 in order to divide the divided model 2 a from the tooth model 2.
That is, when the fixed plate 10 and the support base 30 are connected, a saw for cutting the tooth model 2 and the fixed plate 10 (for example, a saw for cutting plaster) is disposed in the groove 35 with the blade facing upward. From there, it can be rounded up, and by doing so, the divided model 2a is surely provided with a certain area or more.
In particular, in an irregularly arranged tooth, cutting along both sides of each model tooth 2b may not ensure a sufficient bottom area. The significance of securing this is significant.
　このことについて、図６～９に基づき、具体的に説明する。
　まず、固定プレート１０と支持基台３０とを連結すると、固定プレート１０の下面に設けた溝３５の部分に空間が生じる。ここに鋸を、歯を上向きにして配置し、そこから鋸を上方に切り上げる。
　この切り上げは、上端まで完結させずに途中で止める。図６，７では、この切り上げ工程における鋸の経路を符号Ａで示した。 This will be specifically described with reference to FIGS.
First, when the fixed plate 10 and the support base 30 are connected, a space is generated in the groove 35 provided on the lower surface of the fixed plate 10. The saw is placed here with the teeth facing upwards, from which the saw is cut up.
This rounding is stopped halfway without being completed to the upper end. 6 and 7, the path of the saw in this rounding-up process is indicated by symbol A.
　他方で、歯形模型２の模型歯２ｂの両側に沿って、鋸の歯を入れ、上方から切り下ろす。その際、上記切り上げ工程における鋸の停止位置に繋がるように切り下ろす。図８，９では、この切り下げ工程における鋸の経路を符号Ｂで示した。 On the other hand, saw teeth are inserted along both sides of the model tooth 2b of the tooth profile model 2 and cut down from above. In that case, it cuts down so that it may lead to the stop position of the saw in the above-mentioned rounding-up process. 8 and 9, the saw path in the cutting-down process is indicated by the symbol B.
　以上のようにすることで、模型歯２ｂの両側に沿って切り出すことができるとともに、一定以上の底面積を確実に確保できる。 By doing as described above, it is possible to cut out along both sides of the model tooth 2b and to ensure a certain area of the bottom.
　固定プレート１０の上面には、歯形模型２を固定するときにピン２０の位置を確認するための位置マーク１２が形成されている。
　位置マーク１２は長円形状の印であるが、これに限定されるものではなく、二重丸印、文字、数字、記号等の形状であってもよい。 A position mark 12 for confirming the position of the pin 20 when the tooth model 2 is fixed is formed on the upper surface of the fixing plate 10.
The position mark 12 is an oval mark, but is not limited thereto, and may be a double circle mark, a letter, a number, a symbol, or the like.
　固定プレート１０の長辺の側部には、位置マーク１２の延長線上に、ラインマーク１３が各々平行に突設されている。
　歯形模型２が固定プレート１０に固定された状態では位置マーク１２は隠れて見えなくなるが、この状態でも、ラインマーク１３によりピン２０の位置が確認できる。
　本実施形態では、固定プレート１０の片側としているが両側に設けても良い。また、本実施形態では、ラインマーク１３は突設されているが、溝状であっても良い。 On the side of the long side of the fixed plate 10, line marks 13 are projected in parallel with the extended lines of the position marks 12.
In the state where the tooth model 2 is fixed to the fixed plate 10, the position mark 12 is hidden and cannot be seen. Even in this state, the position of the pin 20 can be confirmed by the line mark 13.
In the present embodiment, the fixing plate 10 is provided on one side, but may be provided on both sides. In the present embodiment, the line mark 13 is projected, but it may be groove-shaped.
　支持基台３０は、平面部３１の周囲から垂設された周壁３６を備えている。
　周壁３６には、固定プレート１０の位置マーク１２及びラインマーク１３の延長線上に、ラインマーク３７が各々平行に突設されている。
　本実施形態では、支持基台３０の片側としているが、固定プレート１０のラインマーク１３に関して述べたのと同様に、両側に設けても良いし、また、突設ではなく、溝状であっても良い。 The support base 30 includes a peripheral wall 36 that is suspended from the periphery of the flat portion 31.
On the peripheral wall 36, line marks 37 are projected in parallel on the extension lines of the position mark 12 and the line mark 13 of the fixed plate 10.
In this embodiment, it is on one side of the support base 30, but it may be provided on both sides as described with respect to the line mark 13 of the fixed plate 10, and it is grooved instead of protruding. Also good.
　次に、固定プレート１０と支持基台３０の連結部分について、より詳しく説明する。
　図１０は、支持基台３０に固定プレート１０を連結したときの底面図である。
　また、従来の筒体を備えた支持基台３０を用いた場合との違いを示すため、このような筒体２１０を備えた支持基台３００に固定プレートを連結したときの底面図を図１１に示す。 Next, the connecting portion between the fixed plate 10 and the support base 30 will be described in more detail.
FIG. 10 is a bottom view when the fixed plate 10 is connected to the support base 30.
Further, in order to show the difference from the case where the support base 30 provided with the conventional cylindrical body is used, a bottom view when the fixing plate is connected to the support base 300 provided with such a cylindrical body 210 is shown in FIG. Shown in
　図１１に示す歯科作業模型の基台では、支持基台３００に固定プレートを連結した状態において、底面側から観察しても、ピン２００及び筒体３３０の先端部分しか確認できないから、寸法誤差を改善するにしても、その手掛かりを得ることはできない。
　支持基台３００に固定プレートを連結した際の挿入感やぐらつき感といった感覚だけを頼りに、金型の微調整と、支持基台３００と固定プレートとの連結を繰り返して行うことは現実的ではないから、結局、特許文献１に記載のように、支持基台３００と固定プレートの寸法誤差がある程度生じ得ることを前提として、他の嵌合手段を併用することによって固定を強固とするといった手段が模索されてきたのが現状であった。 In the base of the dental work model shown in FIG. 11, since only the tip portion of the pin 200 and the cylindrical body 330 can be confirmed even when observed from the bottom surface side in a state where the fixed plate is connected to the support base 300, a dimensional error is caused. Even if it improves, the clue cannot be obtained.
It is practical to repeat the fine adjustment of the mold and the connection between the support base 300 and the fixed plate, relying only on the sense of insertion and wobbling when the fixed plate is connected to the support base 300. In the end, as described in Patent Document 1, on the premise that a dimensional error between the support base 300 and the fixing plate may occur to some extent, the means for strengthening the fixing by using other fitting means together Has been sought after.
　これに対し、図１０に見るように、本発明の歯科作業模型の基台１では、ピン２０がその周囲全面にわたって保持部３３によって覆われてしまっているわけではないので、各保持部３３間の間隙から、ピン２０と保持部３３との嵌合具合を観察することができる。
　この観察は、目視だけでなく、適宜の測定機器（例えば、テレスコープ、ルーペなど）によって行うこともできるので、嵌合具合を非常に精密に把握することも可能である。 On the other hand, as shown in FIG. 10, in the base 1 of the dental work model of the present invention, the pin 20 is not covered by the holding portion 33 over the entire periphery thereof. From the gap, the degree of fitting between the pin 20 and the holding portion 33 can be observed.
This observation can be performed not only by visual observation but also by an appropriate measuring device (for example, a telescope, a magnifying glass, etc.), so that the fitting condition can be grasped very precisely.
　しかも、複数の保持部３３によってピン２０が保持されるため、筒体３３０のようにピン２００の周囲全体にわたって繋がっている場合と異なり、金型を分割構造として、例えば、目視や測定機器による観察によって調整を要すると評価された保持部３３のみを個別に微調整するといったことも可能となり、金型の設計や調整における自由度が格段に向上するという効果も発揮される。 In addition, since the pin 20 is held by the plurality of holding portions 33, unlike the case where the entire periphery of the pin 200 is connected like the cylindrical body 330, the mold is formed as a divided structure, for example, by visual observation or observation by a measuring instrument. Thus, it is possible to finely adjust only the holding portions 33 evaluated as requiring adjustment individually, and the effect that the degree of freedom in designing and adjusting the mold is greatly improved is also exhibited.
　なお、図１０に見るように、支持基台３０の周壁３６と保持部３３は、リブ３８で連結されている。また、各貫通孔３２の周縁から垂設された保持部３３同士がリブ３８を介して連通されている。
　このような構成によって保持部３３を補強することができる。なお、本実施形態ではこのようにリブ３８を設けているが、周壁３６や保持部３３の厚みを厚くするなどにより、リブ３８を設けなくても十分な強度が確保できる場合などにおいては、リブ３８を設けないこととしても良い。 As shown in FIG. 10, the peripheral wall 36 of the support base 30 and the holding portion 33 are connected by a rib 38. Further, the holding portions 33 suspended from the peripheral edge of each through hole 32 are communicated with each other via a rib 38.
With such a configuration, the holding portion 33 can be reinforced. In the present embodiment, the ribs 38 are provided in this way. However, in the case where sufficient strength can be secured without providing the ribs 38 by increasing the thickness of the peripheral wall 36 or the holding portion 33, the ribs 38 are provided. 38 may be omitted.
　本発明の歯科作業模型の基台１は、咬合器７０に連結して使用することができる。
　図１２は、上記実施形態に係る歯科作業模型の基台１を咬合器７０に連結した状態を示す正面図である。
　図１３は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た斜視図であり、図１４は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た分解斜視図である。
　図１５は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を下側から見た斜視図であり、図１６は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を下側から見た分解斜視図である。 The dental work model base 1 of the present invention can be used by being connected to an articulator 70.
FIG. 12 is a front view showing a state in which the base 1 of the dental work model according to the embodiment is connected to the articulator 70.
FIG. 13 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 from above, and FIG. 14 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50. It is the disassembled perspective view which looked at the state which carried out from the upper side.
FIG. 15 is a perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 from below, and FIG. 16 is a perspective view of the dental work model base 1 mounted to the mount 40 and the packing 50. It is the disassembled perspective view which looked at the connected state from the lower side.
　歯科作業模型の基台１にはマウント４０及びパッキン５０が連結され、さらに石膏６０により咬合器７０と連結されている。 A mount 40 and a packing 50 are connected to the base 1 of the dental work model, and are further connected to an articulator 70 by a plaster 60.
　支持基台３０は、平面部３１の周縁から周壁３６が垂下しているが、支持基台３０とマウント４０とは、支持基台３０における周壁３６の下方端縁とマウント４０の上面に形成された嵌合突状部４１及び嵌合挟持部４２とが嵌り合うことによって連結される。 In the support base 30, the peripheral wall 36 hangs from the peripheral edge of the flat surface portion 31, but the support base 30 and the mount 40 are formed on the lower edge of the peripheral wall 36 in the support base 30 and the upper surface of the mount 40. The fitting protrusion 41 and the fitting pinching portion 42 are connected by fitting with each other.
　マウント４０は、例えば、合成樹脂製であり、支持基台３０の底面より一回り大きな上面を備える平面視長方形の板状である。支持基台３０の底面より一回り大きな上面を備えることで、咬合器７０への歯科作業模型の基台１の装着と取り外しが容易になし得るようになっている。 The mount 40 is made of, for example, a synthetic resin and has a rectangular plate shape in plan view with an upper surface that is slightly larger than the bottom surface of the support base 30. By providing a top surface that is slightly larger than the bottom surface of the support base 30, the dental work model base 1 can be easily attached to and detached from the articulator 70.
　マウント４０の嵌合突状部４１は、支持基台３０における周壁３６の下方端縁の内周面に嵌合する。本実施形態では、嵌合突状部４１の四隅が面取りされている。
　マウント４０の嵌合挟持部４２は、支持基台３０における周壁３６の下方端縁の四隅に対応する位置に配置され、上端が半球状を呈した円柱形状である。
　各四隅部分では、嵌合突状部４１の面取り部分と嵌合挟持部４２によって３点でバランスよく保持される。
　もっとも、嵌合突状部４１の四隅が面取りされていることは必須ではなく、また、嵌合挟持部４２の形状も円柱形状に限られない。例えば、嵌合突状部４１の四隅は面取りされていなくても良いし、嵌合挟持部４２の形状は、四角柱状、半球状などであってもよい。 The fitting protrusion 41 of the mount 40 is fitted to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30. In this embodiment, the four corners of the fitting protrusion 41 are chamfered.
The fitting sandwiching portion 42 of the mount 40 is disposed at a position corresponding to the four corners of the lower edge of the peripheral wall 36 in the support base 30 and has a cylindrical shape with an upper end having a hemispherical shape.
In each of the four corner portions, the chamfered portion of the fitting protrusion 41 and the fitting clamping portion 42 are held in a balanced manner at three points.
However, it is not essential that the four corners of the fitting protrusion 41 are chamfered, and the shape of the fitting sandwiching portion 42 is not limited to a cylindrical shape. For example, the four corners of the fitting protrusion 41 may not be chamfered, and the shape of the fitting pinching portion 42 may be a quadrangular prism shape, a hemispherical shape, or the like.
　マウント４０の下面には、中央に、石膏６０と接着されることとなる円柱状の接着用凸部４３が形成されている。接着用凸部４３は、縦横に接着用溝４３１が形成されており、石膏６０がこの接着用溝４３１に入り込むようになっている。 On the lower surface of the mount 40, a cylindrical bonding convex portion 43 to be bonded to the gypsum 60 is formed at the center. The bonding convex portion 43 is formed with bonding grooves 431 vertically and horizontally, and the plaster 60 enters the bonding grooves 431.
　また、マウント４０の下面には、両側の短端縁に、パッキン５０を保持するための保持用突状部４４が垂設されている。
　接着用凸部４３と保持用突状部４４の高さは同じにしている。 Further, on the lower surface of the mount 40, holding protrusions 44 for holding the packing 50 are vertically provided at the short end edges on both sides.
The heights of the bonding projection 43 and the holding projection 44 are the same.
　パッキン５０は、石膏６０での咬合器７０の装着時において、マウント４０と石膏６０との間に介在することとなる。
　パッキン５０には柔軟性を持たせることが好ましい。そのためには、例えば、合成樹脂やゴム等の柔軟性のある材料で作製すればよい。
　パッキン５０は、平面視長方形の板状である。また、パッキン５０の短辺の長さはマウント４０の短辺の長さと同一であり、パッキン５０の長辺の長さは、パッキン５０がマウント４０の２つの保持用突状部４４の間に嵌まり込んで保持される長さに調整されている。
　パッキン５０の厚みは、マウント４０の接着用凸部４３及び保持用突状部４４の高さと同じにしている。
　パッキン５０の中央には、マウント４０の接着用凸部４３と同一の寸法の嵌合孔５１が穿設されている。 The packing 50 is interposed between the mount 40 and the plaster 60 when the articulator 70 is mounted on the plaster 60.
It is preferable to give the packing 50 flexibility. For this purpose, for example, a flexible material such as synthetic resin or rubber may be used.
The packing 50 has a rectangular plate shape in plan view. Also, the length of the short side of the packing 50 is the same as the length of the short side of the mount 40, and the length of the long side of the packing 50 is between the two holding projections 44 of the mount 40. The length is adjusted so as to be fitted and held.
The thickness of the packing 50 is set to be the same as the heights of the adhesive projection 43 and the holding projection 44 of the mount 40.
In the center of the packing 50, a fitting hole 51 having the same size as the bonding convex portion 43 of the mount 40 is formed.
　パッキン５０により、歯科作業模型の基台１を咬合器７０に装着したときの石膏６０の使用量を最小量に抑えることができる。
　また、パッキン５０が柔軟性を備えることで、歯科作業模型の基台１を咬合器７０から取り外す作業が容易である。 By using the packing 50, the amount of plaster 60 used when the dental work model base 1 is mounted on the articulator 70 can be suppressed to a minimum amount.
Moreover, the packing 50 is provided with flexibility, so that the work of removing the base 1 of the dental work model from the articulator 70 is easy.
　以上、本発明の一実施形態について詳述したが、本発明は、この実施形態に限るものではなく、その技術的思想を逸脱しない限り、種々の変更実施が可能である。
　そのような変形例は、上記説明中においても適時に例示しているが、その他、例えば、以下のような変更実施も可能である。 Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this embodiment, and various modifications can be made without departing from the technical idea thereof.
Such modifications are illustrated in a timely manner in the above description, but, for example, the following modifications can also be made.
　すなわち、例えば、上記実施形態では、溝３５を支持基台３０の上面に形成するようにしたが、固定プレートの下面に形成するようにしても良いし、支持基台の上面と固定プレートの下面の両方に形成するようにしても良い。支持基台の上面と固定プレートの下面の両方に溝を形成する場合には、それらの溝は、互いに対向するように形成することができる。 That is, for example, in the above embodiment, the groove 35 is formed on the upper surface of the support base 30, but it may be formed on the lower surface of the fixed plate, or the upper surface of the support base and the lower surface of the fixed plate You may make it form in both. When grooves are formed on both the upper surface of the support base and the lower surface of the fixed plate, these grooves can be formed so as to face each other.
　また、上記実施形態では、ピン２０と貫通孔３２及び保持部３３との嵌合、並びに凹部１１と凸部３４との嵌合によって、固定プレート１０と支持基台３０とをバランスよく連結固定させるようにしたが、ピン２０と貫通孔３２及び保持部３３との嵌合のみで十分に固定できる場合は、凹部１１と凸部３４を設けないようにしても良く、また、逆に凹部１１と凸部３４との嵌合のみで十分に固定できる場合は、ピン２０と貫通孔３２及び保持部３３とで密に固定されることは必須ではない。 Moreover, in the said embodiment, the fixing plate 10 and the support base 30 are connected and fixed with sufficient balance by fitting with the pin 20, the through-hole 32, and the holding | maintenance part 33, and fitting with the recessed part 11 and the convex part 34. However, if the pin 20 and the through-hole 32 and the holding portion 33 can be sufficiently fixed, the concave portion 11 and the convex portion 34 may not be provided. In the case where the pin 20 can be sufficiently fixed only by fitting with the convex portion 34, it is not essential that the pin 20, the through hole 32, and the holding portion 33 are closely fixed.
　さらに、上記実施形態では、支持基台３０の周壁３６と保持部３３とをリブ３８で連結し、また、各貫通孔３２の周縁から垂設された保持部３３同士をリブ３８を介して連通するようにし、保持部３３を補強するように構成している。
　そして、上記実施形態では、図２、図４などから明らかなように、支持基台３０の周壁３６と保持部３３とを連結するリブ３８は矩形状を呈している。
　これに対して、支持基台３０の周壁３６と保持部３３とを幅方向で連結するリブとして、例えば、三角形状のリブを採用することもできる。図１７及び図１８は、そのようなリブの変形例を示している。
　図１７は、図２に示す支持基台３０において、支持基台３０の周壁３６と保持部３３とを幅方向で連結するリブの形状のみを変更したものである。図１８は、図４に示す歯科作業模型の基台１において、支持基台３０の周壁３６と保持部３３とを幅方向で連結するリブの形状のみを変更したものである。
　図１７及び図１８において、支持基台３０の周壁３６と保持部３３とを幅方向で連結するリブ３８Ａは、三角形状を呈しており、具体的には、リブ３８Ａは、一辺において支持基台３０の周壁３６と接しており、一辺において支持基台３０の平面部３１の裏面と接しているが、支持基台３０の保持部３３とは接していない点で、図２、図４などに示す上記実施形態とは異なる。
　支持基台３０の保持部３３とは接していないことで、保持部３３が両側に拡がり得るものとなる。そのため、ピン２０を保持部３３に挿入する作業がよりスムーズになることや、ピン２０と保持部３３との間に若干の寸法誤差があっても、保持部３３が両側に拡がって、ピン２０の挿入が可能となることが期待される。
　このように、図１７及び図１８に示す変形例では、保持部３３が両側に拡がることを可能としつつ、固定リブ３８Ａによる補強効果も一定程度確保することが可能となっている。
　なお、従来技術における筒体、例えば、図１１に示すような筒体３３０においては、ピンの全面を囲うように全周が連続しているものであるから、外側に拡がるということは考えにくい。 Further, in the above embodiment, the peripheral wall 36 of the support base 30 and the holding portion 33 are connected by the rib 38, and the holding portions 33 that are suspended from the peripheral edge of each through hole 32 are communicated with each other via the rib 38. Thus, the holding portion 33 is configured to be reinforced.
And in the said embodiment, the rib 38 which connects the surrounding wall 36 of the support base 30 and the holding | maintenance part 33 is exhibiting rectangular shape evidently from FIG. 2, FIG.
On the other hand, for example, a triangular rib can be adopted as a rib for connecting the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction. 17 and 18 show a modification of such a rib.
FIG. 17 shows the support base 30 shown in FIG. 2 in which only the shape of the rib that connects the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction is changed. FIG. 18 shows only the shape of the rib that connects the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction in the base 1 of the dental work model shown in FIG.
17 and 18, the rib 38A that connects the peripheral wall 36 of the support base 30 and the holding portion 33 in the width direction has a triangular shape. Specifically, the rib 38A has a support base on one side. 30 in contact with the peripheral wall 36 of one side, and in contact with the back surface of the flat part 31 of the support base 30 on one side, but is not in contact with the holding part 33 of the support base 30. This is different from the embodiment shown.
Since the holding portion 33 of the support base 30 is not in contact, the holding portion 33 can spread on both sides. Therefore, the operation of inserting the pin 20 into the holding portion 33 becomes smoother, and even if there is a slight dimensional error between the pin 20 and the holding portion 33, the holding portion 33 spreads on both sides, and the pin 20 Is expected to be possible.
As described above, in the modification shown in FIGS. 17 and 18, the holding portion 33 can be expanded on both sides, and the reinforcing effect by the fixing rib 38 </ b> A can be secured to a certain extent.
Note that in a conventional cylinder, for example, a cylinder 330 as shown in FIG. 11, the entire circumference is continuous so as to surround the entire surface of the pin.
　また、上記実施形態に係る歯科作業模型の基台１は偏顎用であるが、本発明は、全顎用にも適用可能である。この場合、例えば、歯科作業模型の基台を、馬蹄形に構成すればよい。これについて、以下に、図１９～２２を参照して説明する。
　なお、既に説明した内容と重複する説明については適宜割愛する。例えば、図１９～２２では明示されていないが、支持基台３０には、平面部３１の裏面側において、図１０等に示すのと同様に、貫通孔３２の周縁から、その内周面でピン２０を摺動可能に保持する保持部３３が１つの貫通孔に対して複数垂設されている。 Moreover, although the base 1 of the dental work model according to the above embodiment is for a deviated jaw, the present invention is also applicable to the entire jaw. In this case, for example, the base of the dental work model may be configured in a horseshoe shape. This will be described below with reference to FIGS.
In addition, the description which overlaps with the content already demonstrated is omitted suitably. For example, although not explicitly shown in FIGS. 19 to 22, the support base 30 is formed on the back surface side of the flat portion 31 from the periphery of the through hole 32 to the inner periphery thereof, as shown in FIG. A plurality of holding portions 33 that slidably hold the pins 20 are provided vertically with respect to one through hole.
　図１９に示す実施形態は、馬蹄形の歯科作業模型の基台に関する。
　図１９は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た分解斜視図である。
　固定プレート１０、支持基台３０、マウント４０及びパッキン５０の形状が、長方形の平面形状ではなく、馬蹄形の平面形状であること以外は、図１等で詳述した偏顎用の基台の実施形態と異なるところはない。 The embodiment shown in FIG. 19 relates to a horseshoe-shaped dental work model base.
FIG. 19 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
Implementation of the base for deviating jaws detailed in FIG. 1 etc., except that the shape of the fixed plate 10, the support base 30, the mount 40 and the packing 50 is not a rectangular plane shape but a horseshoe shape. There is no difference from the form.
　図２０に示す実施形態は、２分割タイプの馬蹄形の歯科作業模型の基台に関する。
　図２０は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た分解斜視図である。
　この実施形態では、支持基台３０が、前歯部分中央において、支持基台３０Ａと支持基台３０Ｂに２分割されている。これに対応して、マウント４０において、支持基台３０における周壁３６の下方端縁の内周面に嵌合する嵌合突状部４１も嵌合突状部４１Ａと嵌合突状部４１Ｂに２分割されている。
　以上の点以外は、図１９に示す実施形態と異なるところはない。 The embodiment shown in FIG. 20 relates to a base of a two-split type horseshoe-shaped dental work model.
FIG. 20 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
In this embodiment, the support base 30 is divided into two at the center of the front tooth portion into a support base 30A and a support base 30B. Correspondingly, in the mount 40, the fitting protrusion 41 that fits to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30 is also replaced with the fitting protrusion 41A and the fitting protrusion 41B. It is divided into two.
Except for the above points, there is no difference from the embodiment shown in FIG.
　図２１に示す実施形態は、３分割タイプの馬蹄形の歯科作業模型の基台に関する。
　図２１は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た分解斜視図である。
　この実施形態では、支持基台３０が、支持基台３０Ｃと支持基台３０Ｄと支持基台３０Ｅに３分割されている。これに対応して、マウント４０において、支持基台３０における周壁３６の下方端縁の内周面に嵌合する嵌合突状部４１も嵌合突状部４１Ｃと嵌合突状部４１Ｄと嵌合突状部４１Ｅに３分割されている。
　本実施形態において、固定プレート１０は、固定プレート１０Ａと固定プレート１０Ｂとからなり、前歯部分に相当する部分は備えていない。
　支持基台３０Ｃには固定プレート１０Ａが、支持基台３０Ｄには固定プレート１０Ｂが、それぞれ、ピン２０を介して着脱自在に連結されている。
　支持基台３０Ｅは、前歯部分に相当し、固定プレート１０Ａと支持基台３０Ｃ、固定プレート１０Ｂと支持基台３０Ｄとを、ピン２０を介してそれぞれ連結した場合において、固定プレート１０Ａの上面、固定プレート１０Ｂの上面及び支持基台３０Ｅの上面が面一になるように、その高さが支持基台３０Ｃ及び支持基台３０Ｄよりも、固定プレート１０の厚み分だけ高くなっている。
　このように固定プレート１０Ａの上面、固定プレート１０Ｂの上面及び支持基台３０Ｅの上面が面一となるように構成されていることで、馬蹄形の歯形模型を困難なく固定することができる。
　以上の点以外は、図１９に示す実施形態と異なるところはない。 The embodiment shown in FIG. 21 relates to a base of a three-split type horseshoe-shaped dental work model.
FIG. 21 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
In this embodiment, the support base 30 is divided into three parts: a support base 30C, a support base 30D, and a support base 30E. Correspondingly, in the mount 40, the fitting protrusion 41 which is fitted to the inner peripheral surface of the lower edge of the peripheral wall 36 in the support base 30 is also fitted with the fitting protrusion 41C and the fitting protrusion 41D. The fitting protrusion 41E is divided into three.
In the present embodiment, the fixed plate 10 includes a fixed plate 10A and a fixed plate 10B, and does not include a portion corresponding to the front tooth portion.
A fixed plate 10A is detachably connected to the support base 30C, and a fixed plate 10B is detachably connected to the support base 30D via pins 20, respectively.
The support base 30E corresponds to the front tooth portion, and when the fixed plate 10A and the support base 30C are connected to the fixed plate 10B and the support base 30D via the pins 20, respectively, the upper surface of the fixed plate 10A is fixed. The height is higher than the support base 30C and the support base 30D by the thickness of the fixed plate 10 so that the upper surface of the plate 10B and the upper surface of the support base 30E are flush with each other.
As described above, the upper surface of the fixed plate 10A, the upper surface of the fixed plate 10B, and the upper surface of the support base 30E are configured to be flush with each other, so that the horseshoe-shaped tooth model can be fixed without difficulty.
Except for the above points, there is no difference from the embodiment shown in FIG.
　図２２に示す実施形態も、３分割タイプの馬蹄形の歯科作業模型の基台に関するものである。
　図２２は、歯科作業模型の基台１をマウント４０及びパッキン５０と連結した状態を上側から見た分解斜視図である。
　ただし、以下の点において、図２１の実施形態とは異なる。
　すなわち、本実施形態では、図２１に示す実施形態のように、支持基台３０が前歯部分に相当する支持基台３０Ｅを備えることとするのではなく、これに相当する部材として盛上り部４５をマウント４０に一体的に設けるようにしている。
　以上の点以外は、図１９に示す実施形態と異なるところはない。 The embodiment shown in FIG. 22 also relates to a base of a three-part horseshoe-shaped dental work model.
FIG. 22 is an exploded perspective view of the dental work model base 1 connected to the mount 40 and the packing 50 as viewed from above.
However, it differs from the embodiment of FIG. 21 in the following points.
That is, in the present embodiment, the support base 30 does not include the support base 30E corresponding to the front tooth portion as in the embodiment shown in FIG. Are provided integrally with the mount 40.
Except for the above points, there is no difference from the embodiment shown in FIG.
　以上、馬蹄形の歯科作業模型の基台の例を複数示したが、これらは、共通の部材を用いることが可能であるので、全ての部材をセットで捉える必要はなく、目的に応じて、一部の部材を変えることにより別の実施形態とすることも可能である。
　例えば、図１９に示す固定プレート１０、支持基台３０、マウント４０及びパッキン５０を保有する者において、２分割形態を実施することを検討する場合には、支持基台３０を図２０に示す支持基台３０Ａ及び支持基台３０Ｂに変更し、マウント４０を嵌合突状部４１Ａと嵌合突状部４１Ｂとを備えるものに変更すれば足り、固定プレート１０及びパッキン５０は既に保有している物を利用することができる。
　このように、異なる実施形態間も含めて、同一の部材を繰り返し利用することができるという点は、コスト的にも廃棄物の低減という意味においても好ましいことである。 As described above, a plurality of examples of the base of a horseshoe-shaped dental work model have been shown. However, since it is possible to use a common member, it is not necessary to capture all the members as a set. It is possible to make another embodiment by changing the member of the part.
For example, in a case where a person holding the fixed plate 10, the support base 30, the mount 40, and the packing 50 shown in FIG. 19 is considered to implement the two-divided form, the support base 30 is shown in FIG. It is sufficient to change to the base 30A and the support base 30B, and to change the mount 40 to one having the fitting protrusion 41A and the fitting protrusion 41B, and the fixing plate 10 and the packing 50 are already held. You can use things.
Thus, the point that the same member can be used repeatedly including between different embodiments is preferable in terms of cost and waste reduction.
　本発明は、歯科作業模型の基台として、歯科補綴物の作製や義歯作製のために、広く歯科作業に利用できる。 The present invention can be widely used for dental work as a base for a dental work model for the production of dental prostheses and the production of dentures.
１　　　歯科作業模型の基台
２　　　歯形模型
２ａ　　分割模型
２ｂ　　模型歯
１０，１０Ａ，１０Ｂ　　固定プレート
１１　　凹部
１２　　位置マーク
１３　　ラインマーク
２０　　ピン
３０，３０Ａ～３０Ｅ　　支持基台
３１　　平面部
３２　　貫通孔
３３　　保持部
３４　　凸部
３５　　溝
３６　　周壁
３７　　ラインマーク
３８，３８Ａ　　リブ
４０　　マウント
４１，４１Ａ～４１Ｅ　　嵌合突状部
４２　　嵌合挟持部
４３　　接着用凸部
４３１　接着用溝
４４　　保持用突状部
４５　　盛上り部
５０　　パッキン
５１　　嵌合孔
６０　　石膏
７０　　咬合器 1 Dental Work Model Base 2 Tooth Profile Model 2a Divided Model 2b Model Teeth 10, 10A, 10B Fixing Plate 11 Recess 12 Position Mark 13 Line Mark 20 Pin 30, 30A-30E Supporting Base 31 Planar Portion 32 Through Hole 33 Holding Portion 34 Projection 35 Groove 36 Peripheral wall 37 Line mark 38, 38A Rib 40 Mount 41, 41A-41E Fitting protrusion 42 Fitting clamping part 43 Adhesion protrusion 431 Adhesion groove 44 Holding protrusion 45 Swelling part 50 packing 51 fitting hole 60 gypsum 70 articulator

Claims (4)

  1. 　上面に歯形模型が固定される固定プレートと、前記固定プレートの下面に垂設されたピンと、前記固定プレートに前記ピンを介して着脱自在に連結される支持基台とからなる歯科作業模型の基台であって、
    　前記支持基台は、前記固定プレートとの連結部となる平面部に前記ピンが嵌挿される貫通孔が形成されており、前記平面部の裏面側には、前記貫通孔の周縁から、その内周面で前記ピンを摺動可能に保持する保持部が１つの貫通孔に対して複数垂設されている、
    歯科作業模型の基台。     A dental work model base comprising: a fixed plate to which a tooth model is fixed on the upper surface; a pin suspended from the lower surface of the fixed plate; and a support base detachably connected to the fixed plate via the pin. A stand,
    The support base has a through-hole into which the pin is inserted and inserted into a flat portion serving as a connecting portion with the fixed plate, and the back surface side of the flat portion has an inner periphery from the periphery of the through-hole. A plurality of holding portions that slidably hold the pin on the peripheral surface are vertically provided with respect to one through hole,
    Dental work model base.
  2. 　前記ピンが、底面視長円状、長方形状又は楕円状であり、前記保持部が、その内周面で前記ピンの両側部のそれぞれを摺動可能に保持するように１つの貫通孔に対して２つ垂設されている、請求項１に記載の歯科作業模型の基台。 The pin has an oval shape, a rectangular shape, or an elliptical shape when viewed from the bottom, and the holding portion holds one of the through holes so that each of the both side portions of the pin is slidably held on its inner peripheral surface. The dental work model base according to claim 1, wherein the dental work model base is vertically suspended.
  3. 　前記支持基台が、前記平面部の周囲から垂設された周壁を備えるとともに、前記周壁と前記保持部とがリブで連結されている、請求項１又は２に記載の歯科作業模型の基台。 The dental work model base according to claim 1 or 2, wherein the support base includes a peripheral wall suspended from the periphery of the flat portion, and the peripheral wall and the holding portion are connected by a rib. .
  4. 　前記支持基台の各貫通孔の周縁から垂設された各保持部が連通している、請求項１から３までのいずれかに記載の歯科作業模型の基台。 The dental work model base according to any one of claims 1 to 3, wherein each holding portion suspended from the periphery of each through hole of the support base communicates.
PCT/JP2014/071044 2014-08-08 2014-08-08 Base for dental work model WO2016021050A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2014/071044 WO2016021050A1 (en) 2014-08-08 2014-08-08 Base for dental work model
JP2016539777A JP6381650B2 (en) 2014-08-08 2014-08-08 Dental work model base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/071044 WO2016021050A1 (en) 2014-08-08 2014-08-08 Base for dental work model

Publications (1)

Publication Number Publication Date
WO2016021050A1 true WO2016021050A1 (en) 2016-02-11

Family

ID=55263352

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/071044 WO2016021050A1 (en) 2014-08-08 2014-08-08 Base for dental work model

Country Status (2)

Country Link
JP (1) JP6381650B2 (en)
WO (1) WO2016021050A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6165936B1 (en) * 2016-07-15 2017-07-19 有限会社ダイトク化研 Dental model support base for dental work model

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197874A (en) * 1992-06-19 1993-03-30 Deborah Silva Method and apparatus for fabricating dental models
JPH08322858A (en) * 1995-06-02 1996-12-10 Mikrona Technol Ag Method for manufacturing model, clamping member, model base and positioning plate for dental technique and clamping system for executing this method
JPH11340A (en) * 1997-06-10 1999-01-06 Kazuteru Tominaga Working jig for dental technique
JP2004283259A (en) * 2003-03-19 2004-10-14 Sanesu Sekko Kk Working model table for dental technician
JP2009100880A (en) * 2007-10-22 2009-05-14 Dentasu:Kk Master model for dental technology
WO2010147060A1 (en) * 2009-06-16 2010-12-23 Teramoto Chiemi Base for dental working model and method for manufacturing same, and fitting device for dental working model and method for manufacturing same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197874A (en) * 1992-06-19 1993-03-30 Deborah Silva Method and apparatus for fabricating dental models
JPH08322858A (en) * 1995-06-02 1996-12-10 Mikrona Technol Ag Method for manufacturing model, clamping member, model base and positioning plate for dental technique and clamping system for executing this method
JPH11340A (en) * 1997-06-10 1999-01-06 Kazuteru Tominaga Working jig for dental technique
JP2004283259A (en) * 2003-03-19 2004-10-14 Sanesu Sekko Kk Working model table for dental technician
JP2009100880A (en) * 2007-10-22 2009-05-14 Dentasu:Kk Master model for dental technology
WO2010147060A1 (en) * 2009-06-16 2010-12-23 Teramoto Chiemi Base for dental working model and method for manufacturing same, and fitting device for dental working model and method for manufacturing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6165936B1 (en) * 2016-07-15 2017-07-19 有限会社ダイトク化研 Dental model support base for dental work model
WO2018012124A1 (en) * 2016-07-15 2018-01-18 有限会社ダイトク化研 Tooth form model support base for dental work model
TWI633873B (en) * 2016-07-15 2018-09-01 大德化研有限公司 Support base of dental mold for dental working model

Also Published As

Publication number Publication date
JPWO2016021050A1 (en) 2017-06-01
JP6381650B2 (en) 2018-08-29

Similar Documents

Publication Publication Date Title
US5622497A (en) Tray modeling system and articulator for producing a dental model
US8500448B2 (en) Dental model, articulator and methods for production thereof
ITMI942224A1 (en) APPARATUS AND METHOD TO CREATE A DENTAL MODEL
US20040013998A1 (en) Dental modeling and articulating system and method
US5996963A (en) Dental casting mold device
US6247927B1 (en) Disposable articulator having tray support with opening which accepts a projection from a tray
JP5486650B2 (en) Dental work model fitting device
US7338283B2 (en) Dental prostheses modeling system with symmetric double-well trays slidably mountable to articulator
US6948932B2 (en) Dental modeling and articulating system
JP6381650B2 (en) Dental work model base
KR101849044B1 (en) Tooth model base tool for articulator
KR20050021430A (en) Dental modeling and articulating system and method
US8573973B2 (en) Disposable articulator having at least one continuous opening for acceptance of stabilization means
US11966941B1 (en) Dental tray and articulator
US20180333234A1 (en) Articulator
US20040166465A1 (en) Pin-tray dental prostheses modeling system
RU2404723C2 (en) Method for manufacturing of upper jaw denture with hollow obturator
KR101329732B1 (en) Mould assembly for fabrication of dental model
WO2018012124A1 (en) Tooth form model support base for dental work model
JP3429231B2 (en) Dental impression tray
WO2006091982A2 (en) Dental modeling and articulating system and method
CN203483534U (en) Base specially used for producing false tooth
KR100417880B1 (en) An articurator for the dental model
RU95504U1 (en) DENTAL JAINT
US20070292818A1 (en) Dental casting tray assemblies

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14899079

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2016539777

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14899079

Country of ref document: EP

Kind code of ref document: A1