WO2017056180A1 - Block for medical material fabrication, block for dental prosthesis fabrication, and method for fabricating block for medical material fabrication - Google Patents

Block for medical material fabrication, block for dental prosthesis fabrication, and method for fabricating block for medical material fabrication Download PDF

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Publication number
WO2017056180A1
WO2017056180A1 PCT/JP2015/077454 JP2015077454W WO2017056180A1 WO 2017056180 A1 WO2017056180 A1 WO 2017056180A1 JP 2015077454 W JP2015077454 W JP 2015077454W WO 2017056180 A1 WO2017056180 A1 WO 2017056180A1
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Prior art keywords
medical material
block
dental prosthesis
chuck
cut
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PCT/JP2015/077454
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French (fr)
Japanese (ja)
Inventor
邦夫 村中
慎二 高林
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株式会社プラクティブ
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Priority to JP2016558230A priority Critical patent/JPWO2017056180A1/en
Priority to PCT/JP2015/077454 priority patent/WO2017056180A1/en
Publication of WO2017056180A1 publication Critical patent/WO2017056180A1/en

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    • 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
    • A61C13/08—Artificial teeth; Making same
    • A61C13/087—Artificial resin teeth

Definitions

  • the present invention relates to a medical material manufacturing block, a dental prosthesis manufacturing block, and a method of manufacturing a medical material manufacturing block.
  • dental prostheses such as inlays, crowns, bridges, dentures, implants, etc. have been made to the individual patients manually by a dental technician.
  • a technology has been used in which three-dimensional CAD data is acquired from three-dimensional images obtained by MRI, CT or the like, and a numerically controlled machine tool manufactures dental prostheses tailored to individual patients.
  • a metal dental prosthesis with a machine tool for example, a cylindrical metal is fixed to the machine tool and cutting is performed.
  • a dental prosthesis made of engineering plastic with a machine tool for example, as shown in Patent Document 1
  • a workpiece made of engineering plastic is bonded to a pedestal of a metal chuck gripper. Cutting is performed using the cutting complex.
  • the cutting composite 705 exemplified in Patent Document 1 has a prismatic form having a size close to the final dental prosthesis 706 from the disc-like block 701 made of engineering plastic.
  • the cut object 703 is cut out and bonded to a pedestal 704 of a metal chuck gripper 702.
  • the dental prosthesis 706 is manufactured by fixing the chuck gripping portion 702 of the cutting complex 705 to the chuck of a cutting device such as a numerically controlled machine tool and cutting the object 703.
  • the present invention can shorten the time required for manufacturing medical materials by reducing the number of steps in manufacturing medical materials such as dental prostheses, and also recovers engineering plastic after shaving out the medical materials. It is an object of the present invention to provide a medical material manufacturing block, a dental prosthesis manufacturing block, and a method of manufacturing a medical material manufacturing block, which are also easy.
  • the means for solving the problem is (1) It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of engineering plastic. It is a block for producing a medical material characterized by
  • the preferable aspect of said (1) is as follows.
  • the to-be-cut portion has at least one pair of flat surfaces parallel to each other and parallel to the axis of the chuck grip extending in the direction of insertion into the chuck.
  • the engineering plastic is polyetheretherketone.
  • the means for solving the other problem is (4) It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of engineering plastic. It is a block for producing a dental prosthesis characterized by
  • the means for solving the other problem is (5) The method for producing a medical material production block according to any one of the above (1) to (3), which is produced by injection molding. It is.
  • the chuck grip portion and the cut portion are not formed of different materials, but are integrally formed of engineering plastic.
  • the number of steps in manufacturing a medical material, in particular a dental prosthesis can be reduced by cutting, and as a result, the time required for manufacturing a medical material, in particular a dental prosthesis, can be shortened.
  • the medical material manufacturing block and the dental prosthesis manufacturing block according to the present invention after scraping out the medical material, in particular the dental prosthesis, collecting cutting chips and the chuck grip after cutting and recovering the engineering plastic It is easy to recover engineering plastics.
  • the method of manufacturing a medical material manufacturing block according to the present invention since the medical material manufacturing block is manufactured by injection molding, the medical material manufacturing block having a complicated shape having a chuck gripping portion and a cut portion It can be manufactured integrally with engineering plastics.
  • FIG. 1 is a six-sided view of a dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention.
  • FIG. 1 (a) is a front view of a dental prosthesis manufacturing block.
  • FIG. 1 (b) is a left side view of the dental prosthesis manufacturing block.
  • FIG. 1 (c) is a right side view of the dental prosthesis manufacturing block.
  • FIG. 1 (d) is a rear view of a dental prosthesis manufacturing block.
  • FIG. 1 (e) is a plan view of a dental prosthesis manufacturing block.
  • FIG. 1 (f) is a bottom view of the dental prosthesis manufacturing block.
  • FIG. 2 is an explanatory view showing an example of a cutting device.
  • FIG. 1 (a) is a front view of a dental prosthesis manufacturing block.
  • FIG. 1 (b) is a left side view of the dental prosthesis manufacturing block.
  • FIG. 1 (c) is a right side view of the dental prosthesis manufacturing block.
  • FIG. 3 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention.
  • FIG. 3 (a) is a front view of a medical material manufacturing block.
  • FIG. 3B is a left side view of the medical material manufacturing block.
  • FIG. 3C is a right side view of the medical material manufacturing block.
  • FIG. 3D is a rear view of the medical material manufacturing block.
  • FIG. 3E is a plan view of a medical material manufacturing block.
  • FIG. 3F is a bottom view of the medical material manufacturing block.
  • FIG. 4 is a six-sided view of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention.
  • FIG. 4A is a front view of a medical material manufacturing block.
  • FIG. 4A is a front view of a medical material manufacturing block.
  • FIG. 4B is a left side view of the medical material manufacturing block.
  • FIG. 4C is a right side view of the medical material manufacturing block.
  • FIG. 4 (d) is a rear view of the medical material manufacturing block.
  • FIG. 4E is a plan view of the medical material manufacturing block.
  • FIG. 4 (f) is a bottom view of the medical material manufacturing block.
  • FIG. 5 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention.
  • FIG. 5 (a) is a front view of a medical material manufacturing block.
  • FIG. 5 (b) is a left side view of the medical material manufacturing block.
  • FIG. 5C is a right side view of the medical material manufacturing block.
  • FIG. 5D is a rear view of the medical material manufacturing block.
  • FIG. 5 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention.
  • FIG. 5 (a) is a front view of a medical material manufacturing
  • FIG. 5E is a plan view of the medical material manufacturing block.
  • FIG. 5F is a bottom view of the medical material manufacturing block.
  • FIG. 6 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention.
  • FIG. 6A is a front view of a medical material manufacturing block.
  • FIG. 6 (b) is a left side view of the medical material manufacturing block.
  • FIG. 6C is a right side view of the medical material manufacturing block.
  • FIG. 6D is a rear view of the medical material manufacturing block.
  • FIG. 6 (e) is a plan view of the medical material manufacturing block.
  • FIG. 6F is a bottom view of the medical material manufacturing block.
  • FIG. 7 is an explanatory view for explaining a manufacturing process of a conventional dental prosthesis.
  • the medical material manufacturing block of the present invention is used to manufacture a medical material having a desired shape by being fixed to a cutting device and being cut.
  • medical materials include alternative materials such as bones, teeth, and valves, parts for fixing them, and the like, which are used by being embedded in the body.
  • the medical materials include not only materials for treatment but also materials for cosmetic surgery and the like.
  • a bone substitute material for example, a nasal bone, artificial bones such as phalanges, artificial joints, artificial spines and the like can be mentioned.
  • dental prostheses such as inlays, crowns, bridges, dentures, dental implants and the like can be mentioned.
  • the dental implant includes an implant to be implanted in the bone of the jaw, an upper structure, which is also called an artificial tooth instead of a crown, and an abutment connecting these.
  • an implant to be implanted in the bone of the jaw an upper structure, which is also called an artificial tooth instead of a crown, and an abutment connecting these.
  • leaflets used for mitral valve, aortic valve and the like can be mentioned.
  • FIG. 1 is a six-sided view of a dental prosthesis manufacturing block which is an example of a dental prosthesis manufacturing block according to the present invention.
  • FIG. 2 is an explanatory view showing an example of a cutting device.
  • the dental prosthesis manufacturing block 1 has a chuck holding portion 2 fixed to the chuck 11 of the cutting device 10 and a cut portion 3 cut by the cutting tool 12. 2 and the to-be-cut part 3 are integrally formed of engineering plastic.
  • the chuck gripping portion 2 and the portion to be cut 3 are not formed by separately forming the chuck gripping portion 2 and the portion to be cut 3 and then bonding them, but are integrally formed by injection molding or the like, There is no joint part joining the part 2 and the part 3 to be cut.
  • the chuck gripping portion 2 and the portion to be cut 3 are an integral body made of engineering plastic. Although it is preferable that the chuck gripping portion 2 and the portion to be cut 3 are made of the same material, as long as they are integrally formed, a part may be made of another material.
  • the chucking portion 2 may contain a fiber reinforced material, and the cut portion 3 may not contain a fiber reinforced material.
  • the engineering plastic has a strength that can be attached to at least a cutting device to perform cutting. Also, it is preferred that the engineering plastic has mechanical properties similar to the living bone or teeth at the site of application.
  • the engineering plastic has, for example, a flexural modulus of 3 to 30 GPa and a flexural strength of 50 to 300 MPa, although it varies depending on the part to be applied.
  • Engineering plastics include, for example, polyetheretherketone, polyetheretherketoneketone, polyetherketoneketone, aromatic polyetherketone such as polyetherketoneetherketone ketone, polyamide, polyamideimide, polyetherimide, polyphenylene sulfide, and the like Mention may be made of thermoplastic engineering plastics, such as liquid crystal polymers, and thermosetting engineering plastics, such as melamine, silicone and phenol.
  • the dental prosthesis manufacturing block 1 may be formed of one type of engineering plastic, or may be formed of two or more types in combination. Among these, polyetheretherketone (PEEK) excellent in biocompatibility is preferable as the material of the block 1 for producing a dental prosthesis.
  • PEEK polyetheretherketone
  • the engineering plastic may be a fiber reinforced engineering plastic mixed with fibers.
  • fibers contained in fiber reinforced engineering plastics include carbon fibers such as carbon nanotubes, glass fibers, ceramic fibers such as silicon carbide and alumina, metal fibers such as tungsten and molybdenum, and organic fibers such as polyester and polyamide Etc. can be mentioned. These fibers may be contained singly or in combination of two or more.
  • the engineering plastic may be a particle-containing engineering plastic including particles made of the same material as the above-described fiber material.
  • the engineering plastic may contain, if necessary, conventionally known various additives such as a color pigment, an antioxidant, an antibacterial agent, a stabilizer, and a discoloration inhibitor.
  • the chuck gripping portion 2 is a portion fixed to the chuck 11 of the cutting device 10.
  • the shape and size of the chuck 2 are not particularly limited as long as they can be fixed to the chuck 11.
  • the chuck grip 2 preferably has a rotationally symmetrical shape about the axis O as viewed from the direction of the axis O extending in the direction of insertion into the chuck 11.
  • the chuck grip 2 has a strength that can be fixed to the chuck 11 and cut.
  • the chuck grip 2 preferably has a thickness of 3 mm or more.
  • the chuck gripping portion 2 shown in FIG. 1 has a substantially cylindrical rod portion 4 and a disk portion 5 larger in diameter than the rod portion 4.
  • the rod-like portion 4 has a neck portion 6 smaller in diameter than the other portions at the central portion in the direction of the axis O thereof.
  • the disc portion 5 has a notch 7 cut out from the outer peripheral surface of the disc portion 5 to the vicinity of the outer peripheral surface of the rod portion 4 when viewed from the bottom.
  • the notch 7 is positioned by being fitted to a protrusion provided on the chuck 11 of the cutting device 10, and used to fix the dental prosthesis manufacturing block 1 so as not to rotate about the axis O Be Since the dental prosthesis manufacturing block 1 can be non-rotatably fixed to the chuck 11 by other means, when the cutting device 10 does not have a projection, the disk 5 having the notch 7 is not present. May be
  • the portion to be cut 3 is a portion which is cut by the cutting tool 12 and the dental prosthesis is cut out.
  • the size and shape of the portion to be cut 3 are not particularly limited as long as the size and shape are such that the final product dental prosthesis can be cut out.
  • the portion to be cut 3 shown in FIG. 1 is a square prism and has a width larger than the diameter of the disk portion 5 of the chuck gripping portion 2.
  • the dimensions of the portion 3 to be cut are, for example, 8 to 16 mm in length, 8 to 16 mm in width, and 12 to 20 mm in height in the case of dental use.
  • this portion to be cut 3 is a square prism, two planes 8a and 8b of the four side surfaces are disposed parallel to the axis O and parallel to each other, and the other two planes 9a and 9b are also parallel to the axis O And are arranged parallel to one another. Since the to-be-cut portion 3 has two pairs of parallel flat surfaces 8a, 8b, 9a, 9b, it is possible to use an automatic work changer equipped with a jig having a pair of holding portions that perform opening and closing operations. The side surface of the portion 3 to be cut can be reliably held. Therefore, the dental prosthesis manufacturing block 1 having the portion to be cut 3 can efficiently produce a dental prosthesis using a machining center equipped with an automatic work changer.
  • the cutting device 10 is not particularly limited as long as it can fix the chuck gripping portion 2 in the dental prosthesis manufacturing block 1 and can cut the portion to be cut 3 to cut out the dental prosthesis.
  • Examples of the cutting device include a common lathe, a numerically controlled machine tool, and a machining center.
  • the numerically controlled machine tool is a machine that commands and automatically processes relative motion between the cutting tool 12 and the dental prosthesis manufacturing block 1 by numerical information.
  • the machining center is an apparatus equipped with an automatic tool changer capable of performing a plurality of operations such as milling and drilling in a single attachment to a numerically controlled machine tool, preferably an automatic work changer further performing automatic attachment of a work. Equipped with
  • the cutting device 10 shown in FIG. 2 is a machining center having a main body 13 having a chuck 11 for fixing the dental prosthesis manufacturing block 1, a cutting portion 14 having a cutting tool 12, and a computer 15.
  • the computer 15 sets an NC data creation unit that sets cutting conditions from the input three-dimensional CAD data to create NC data, and a control unit that controls the operation of the main unit 13 and the cutting unit 14 based on the NC data.
  • the three-dimensional CAD data may be input to the computer 15 by communication means such as the Internet, or may be stored and transported in a portable memory and taken into the computer 15.
  • the structure of the chuck 11 is not particularly limited as long as the chuck grip 2 can be attached along the main axis of the chuck 11.
  • the cutting tool 12 can use the well-known cutting tool used by a lathe, for example, a cutting tool, an end mill, etc. can be mentioned.
  • the cutting device 10 can automatically process the dental prosthesis manufacturing block 1 fixed to the chuck 11 to cut out a dental prosthesis having a shape adapted to an individual patient.
  • the cutting device 10 has an automatic tool changer and an automatic work changer for automatically changing the dental prosthesis manufacturing block 1 and the cutting tool 12 respectively, the production efficiency can be improved. it can.
  • this dental prosthesis manufacturing block 1 is integrally formed of engineering plastic, there is no work of bonding an object made of engineering plastic to a metal chuck gripper as in the prior art. Therefore, since there is no center alignment at the time of bonding the chuck grip and the object to be cut, there is no variation in the size of each block for manufacturing a dental prosthesis. Therefore, there is no need to adjust the cutting device 10 that is caused by the dimensional variation. In addition, since there is no variation in the dimensions of each dental prosthesis manufacturing block, a dental prosthesis with high dimensional accuracy can be manufactured. In addition, as in the prior art, there is no work to remove the object remaining on the pedestal of the chuck holder after cutting out the dental prosthesis from the object.
  • the dental prosthesis manufacturing block 1 the number of steps in manufacturing the dental prosthesis can be reduced by cutting, and as a result, the time required for manufacturing the dental prosthesis can be shortened. Also, a dental prosthesis with high dimensional accuracy can be manufactured. In addition, it is possible to recover the remaining material including the chuck grip, which is produced after cutting the dental prosthesis or the like from the dental prosthesis manufacturing block, and to reuse the engineering plastic.
  • the manufacturing method of the dental prosthesis manufacturing block 1 is not particularly limited as long as the chuck gripping portion 2 and the portion to be cut 3 are integrally formed of an engineering plastic.
  • the dental prosthesis manufacturing block 1 can be manufactured, for example, by injection molding or the like.
  • a mold having a cavity having an inner peripheral surface having the same shape as the outer peripheral surface of the dental prosthesis manufacturing block 1 is prepared.
  • a engineering plastic melted by heating to a temperature above the melting point is injected into the cavity of the mold under application of a predetermined injection pressure. For example, in the case of PEEK, it is heated to about 380 ° C. and injected into the mold cavity.
  • the engineering plastic is solidified by cooling the mold and then demolded.
  • the molding after demolding has not only the target dental prosthesis manufacturing block 1 but also the engineering plastic filled in sprues, which is an inlet path for injecting the molten engineering plastic. Therefore, the dental prosthesis manufacturing block 1 is obtained by cutting the engineering plastic filled in the sprue from the molding.
  • a model of a dental prosthesis such as a crown is prepared and scanned to acquire three-dimensional CAD data.
  • Three-dimensional CAD data is input to the computer 15 of the cutting device 10, and the computer 15 sets cutting conditions such as the type of the cutting tool, feed rate, rotational speed, position and the like from the three-dimensional CAD data.
  • Create NC data that is
  • the side of the portion 3 to be cut of the dental prosthesis manufacturing block 1 is held by a robot having a holding portion, and the chuck holding portion 2 is inserted into the chuck 11 of the cutting device 10. It fixes so that the axis line O of the block 1 for thing manufacture may correspond. This operation is preferably performed automatically by a robot or the like in terms of production efficiency.
  • the main body 13 and the cutting portion 14 are operated to obtain a dental prosthesis having a desired shape.
  • the obtained dental prosthesis is subjected to polishing processing and the like as needed.
  • the dental prosthesis manufacturing block after the dental prosthesis has been cut may be discarded as it is, but may be reused.
  • the dental prosthesis manufacturing block 1 is manufactured by injection molding, the complex-shaped dental prosthesis manufacturing block 1 having the chuck holding portion 2 and the cut portion 3 is engineered It can be manufactured integrally with plastic. Further, since the dental prosthesis is manufactured using the dental prosthesis manufacturing block 1 integrally formed of the engineering plastic, the time required for manufacturing the dental prosthesis can be shortened, and the dental having high dimensional accuracy can be obtained. Prostheses can be manufactured.
  • a dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention, and a manufacturing method of a dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention are the embodiments described above.
  • the present invention is not limited to the embodiment, and various modifications are possible as long as the object of the present invention can be achieved.
  • the medical material manufacturing block 101 of the second embodiment has the same configuration as that of the medical material manufacturing block 1 of the first embodiment except that the portion to be cut 103 has a substantially cylindrical shape. As shown in FIGS. 3 (e) and 3 (f), the medical material manufacturing block 101 has a pair of flat surfaces 108a and 108b parallel to the axis O 1 and parallel to each other, and the other side is circular in cross section. It is a curved surface.
  • Third Embodiment Medical materials for producing block 201 of the third embodiment has the same configuration as the medical material manufactured block 1 of the first embodiment .
  • this medical material manufacturing block 201 is composed of three pairs of flat surfaces 208a, 208b, 209a, 209b, 210a, 210b parallel to the axis O 2 and parallel to each other. Have.
  • Fourth Embodiment Medical materials for producing block 301 of the fourth embodiment has the same configuration as medical materials for producing block 1 of the first embodiment .
  • the medical material production block 301 is parallel to the axis O 3 and mutually parallel pair of flat 308a, 308b, 309a, 309b, 310a, 310b, 311a, There are four sets of 311b.
  • the medical material production block 401 is parallel to the axis O 4 and a pair of parallel planes 408a together, 408b, 409a, 409b, 410a , 410b, 411a, There are five sets of 411b, 412a, 412b, 413a, and 413b.

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  • 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

The present invention addresses the problem of providing blocks for medical material fabrication, blocks for dental prosthesis fabrication, and a method for fabricating the blocks for medical material fabrication which can shorten the time required to fabricate medical material by reducing the number of steps in the fabrication of medical material such as dental prosthesis, and for which engineering plastics can be collected easily after the medical material has been scraped out. The blocks for medical material fabrication and the blocks for dental prosthesis fabrication are characterized in that: the blocks include a chuck holding part to be fixed to a chuck of a cutting device and a part to be cut that is to be cut by a cutting tool; and the chuck holding part and the part to be cut are formed integrally by an engineering plastic. The method for fabricating the blocks for medical material fabrication is characterized in that the blocks are fabricated by ejection molding.

Description

医療材料製造用ブロック、歯科補綴物製造用ブロック、及び医療材料製造用ブロックの製造方法Medical material manufacturing block, dental prosthesis manufacturing block, and method of manufacturing medical material manufacturing block
　この発明は医療材料製造用ブロック、歯科補綴物製造用ブロック、及び医療材料製造用ブロックの製造方法に関する。 The present invention relates to a medical material manufacturing block, a dental prosthesis manufacturing block, and a method of manufacturing a medical material manufacturing block.
　骨や歯の代替材料として、ＳＵＳ３１６、Ｃｏ－Ｃｒ合金、Ｔｉ合金等の金属が知られている。一方で、医療におけるＭＲＩやＣＴの多様化によって、金属材料による磁性の発生、発熱、応力の発生等の問題が看過できない状況になってきている。そのため、骨や歯の代替材料として、非金属及び非磁性の材料であるエンジニアリングプラスチックが注目されるようになり、これらの中でもポリエーテルエーテルケトン（ＰＥＥＫ）は骨や歯に近い力学的特性を有し、生体適合性にも優れていることから、特に技術開発が進んでいる。 As alternatives to bones and teeth, metals such as SUS316, Co-Cr alloy, Ti alloy and the like are known. On the other hand, with the diversification of MRI and CT in medical treatment, problems such as the generation of magnetism, heat generation, and stress due to metal materials can not be overlooked. Therefore, engineering plastics, which are nonmetals and nonmagnetic materials, are attracting attention as substitutes for bones and teeth. Among them, polyetheretherketone (PEEK) has mechanical properties close to those of bones and teeth. In particular, technological development is advanced because of its excellent biocompatibility.
　従来、インレー、クラウン、ブリッジ、義歯、インプラント等の歯科補綴物は、歯科技工士の手作業により個々の患者に合わせて作製されていた。近年、ＭＲＩやＣＴ等により得られる３次元画像から３次元ＣＡＤデータを取得し、数値制御工作機械によって、個々の患者に合わせた歯科補綴物を製造する技術が使用されるようになっている。 Heretofore, dental prostheses such as inlays, crowns, bridges, dentures, implants, etc. have been made to the individual patients manually by a dental technician. In recent years, a technology has been used in which three-dimensional CAD data is acquired from three-dimensional images obtained by MRI, CT or the like, and a numerically controlled machine tool manufactures dental prostheses tailored to individual patients.
　金属製の歯科補綴物を工作機械で製造する際には、例えば、円柱状の金属を工作機械に固定して、切削が行われる。一方、エンジニアリングプラスチック製の歯科補綴物を工作機械で製造する際には、例えば、特許文献１に示されるように、金属製のチャック把持体の台座にエンジニアリングプラスチック製の被切削物を接着してなる切削用複合体を用いて、切削が行われる。 When manufacturing a metal dental prosthesis with a machine tool, for example, a cylindrical metal is fixed to the machine tool and cutting is performed. On the other hand, when manufacturing a dental prosthesis made of engineering plastic with a machine tool, for example, as shown in Patent Document 1, a workpiece made of engineering plastic is bonded to a pedestal of a metal chuck gripper. Cutting is performed using the cutting complex.
特開２０１５－６７５４３号公報JP, 2015-67543, A
　ところで、図７に示すように、特許文献１に例示される切削用複合体７０５は、エンジニアリングプラスチック製の円盤状ブロック７０１から、最終物の歯科補綴物７０６に近い大きさを有する角柱状の被切削物７０３を切り出し、これを金属製のチャック把持体７０２の台座７０４に接着して製造される。歯科補綴物７０６は、切削用複合体７０５のチャック把持部７０２を数値制御工作機械等の切削装置のチャックに固定し、被切削物７０３を切削することにより製造される。チャック把持体７０２の台座７０４に被切削物７０３を接着する際には、歯科補綴物７０６の寸法精度が低下しないように、チャック把持体７０２と被切削物７０３とのセンターを一致させる調整を行う必要がある。また、被切削物７０３から歯科補綴物７０６を削り出した後には、チャック把持体７０２の台座７０４に歯科補綴物７０６を削り出した後のエンジニアリングプラスチックが接着した状態になっているので、チャック把持体７０２を再利用するにしても破棄するにしても、台座７０４からエンジニアリングプラスチックを、薬品又は切削等により取り除く必要がある。
　このように、いくつもの工程を経て切削加工を行っていたことから、エンジニアリングプラスチック製の歯科補綴物は、金属製の歯科補綴物に比べて手間がかかり、製造に要する時間もかかっていた。
　更に、エンジニアリングプラスチックは高価であることにより、切削により生じる切削屑を集めて再利用を図る必要があり、そうすると台座７０４にこびりついたエンジニアリングプラスチックを完全に除去して回収することを余儀なくされていた。 By the way, as shown in FIG. 7, the cutting composite 705 exemplified in Patent Document 1 has a prismatic form having a size close to the final dental prosthesis 706 from the disc-like block 701 made of engineering plastic. The cut object 703 is cut out and bonded to a pedestal 704 of a metal chuck gripper 702. The dental prosthesis 706 is manufactured by fixing the chuck gripping portion 702 of the cutting complex 705 to the chuck of a cutting device such as a numerically controlled machine tool and cutting the object 703. When bonding the object to be cut 703 to the pedestal 704 of the chuck holding body 702, adjustment is made to match the centers of the chuck holding body 702 and the object to be cut 703 so that the dimensional accuracy of the dental prosthesis 706 does not decrease. There is a need. Further, after cutting out the dental prosthesis 706 from the object to be cut 703, the engineering plastic after cutting out the dental prosthesis 706 adheres to the pedestal 704 of the chuck holding body 702, so Whether the body 702 is reused or discarded, it is necessary to remove the engineering plastic from the pedestal 704 by means of chemicals or cutting.
As described above, since the cutting process is performed through several processes, the dental prosthesis made of engineering plastic takes more time and time than the metallic dental prosthesis, and it takes time for manufacturing.
Furthermore, the high cost of engineering plastics necessitates collection and reuse of cutting chips generated by cutting, which necessitates complete removal and recovery of engineering plastics stuck to the pedestal 704.
　この発明は、歯科補綴物等の医療材料を製造する際の工程数を減らすことにより医療材料の製造に要する時間を短縮することができ、また、医療材料を削り出した後におけるエンジニアリングプラスチックの回収も容易である、医療材料製造用ブロック、歯科補綴物製造用ブロック、及び医療材料製造用ブロックの製造方法を提供することを目的とする。 The present invention can shorten the time required for manufacturing medical materials by reducing the number of steps in manufacturing medical materials such as dental prostheses, and also recovers engineering plastic after shaving out the medical materials. It is an object of the present invention to provide a medical material manufacturing block, a dental prosthesis manufacturing block, and a method of manufacturing a medical material manufacturing block, which are also easy.
　前記課題を解決するための手段は、
（１）　切削装置のチャックに固定されるチャック把持部と切削工具により切削される被切削部とを有し、前記チャック把持部と前記被切削部とはエンジニアリングプラスチックにより一体に形成されてなることを特徴とする医療材料製造用ブロックである。 The means for solving the problem is
(1) It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of engineering plastic. It is a block for producing a medical material characterized by
　前記（１）の好適な態様は、以下の通りである。
（２）　前記被切削部は、前記チャックに挿入する方向に延在する前記チャック把持部の軸線に平行でかつ互いに平行な一対の平面を少なくとも１組有する。
（３）　前記（１）又は前記（２）に記載の医療材料製造用ブロックにおいて、前記エンジニアリングプラスチックは、ポリエーテルエーテルケトンである。 The preferable aspect of said (1) is as follows.
(2) The to-be-cut portion has at least one pair of flat surfaces parallel to each other and parallel to the axis of the chuck grip extending in the direction of insertion into the chuck.
(3) In the medical material manufacturing block according to (1) or (2), the engineering plastic is polyetheretherketone.
　前記別の課題を解決するための手段は、
（４）　切削装置のチャックに固定されるチャック把持部と切削工具により切削される被切削部とを有し、前記チャック把持部と前記被切削部とはエンジニアリングプラスチックにより一体に形成されてなることを特徴とする歯科補綴物製造用ブロックである。 The means for solving the other problem is
(4) It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of engineering plastic. It is a block for producing a dental prosthesis characterized by
　前記別の課題を解決するための手段は、
（５）　前記（１）～前記（３）のいずれか一つに記載の医療材料製造用ブロックの製造方法であって、射出成形により製造することを特徴とする医療材料製造用ブロックの製造方法である。 The means for solving the other problem is
(5) The method for producing a medical material production block according to any one of the above (1) to (3), which is produced by injection molding. It is.
　この発明に係る医療材料製造用ブロック及び歯科補綴物製造用ブロックは、チャック把持部と被切削部とがそれぞれ別の材料により形成されるのではなく、エンジニアリングプラスチックにより一体に形成されているので、従来のように、エンジニアリングプラスチック製の被切削物を金属製のチャック把持体に接着する作業がない。そのため、チャック把持体と被切削物とを接着する際のセンター合わせもないので、医療材料製造用ブロック毎及び歯科補綴物製造用ブロック毎の寸法にばらつきがない。また、従来のように、被切削物から歯科補綴物を削り出した後に、チャック把持体の台座に残っている被切削物を除去する作業もない。したがって、この発明によると、切削加工により医療材料特に歯科補綴物を製造する際の工程数を減らすことができ、その結果、医療材料特に歯科補綴物の製造に要する時間を短縮することができる。
　この発明に係る医療材料製造用ブロック及び歯科補綴物製造用ブロックは、医療材料特に歯科補綴物を削り出した後には、切削屑と切削後のチャック把持部とを集めてエンジニアリングプラスチックを回収することができるので、エンジニアリングプラスチックの回収作業が容易である。
　また、この発明に係る医療材料製造用ブロックの製造方法によると、医療材料製造用ブロックを射出成形により製造するので、チャック把持部と被切削部とを有する複雑な形状の医療材料製造用ブロックをエンジニアリングプラスチックで一体に製造することができる。 In the medical material manufacturing block and the dental prosthesis manufacturing block according to the present invention, the chuck grip portion and the cut portion are not formed of different materials, but are integrally formed of engineering plastic. As in the prior art, there is no work of bonding an engineering plastic workpiece to a metal chuck gripper. Therefore, since there is no center alignment at the time of bonding the chuck grip and the object to be cut, there is no variation in the dimensions of each block for manufacturing a medical material and each block for manufacturing a dental prosthesis. In addition, as in the prior art, there is no work to remove the object remaining on the pedestal of the chuck holder after cutting out the dental prosthesis from the object. Therefore, according to the present invention, the number of steps in manufacturing a medical material, in particular a dental prosthesis, can be reduced by cutting, and as a result, the time required for manufacturing a medical material, in particular a dental prosthesis, can be shortened.
In the medical material manufacturing block and the dental prosthesis manufacturing block according to the present invention, after scraping out the medical material, in particular the dental prosthesis, collecting cutting chips and the chuck grip after cutting and recovering the engineering plastic It is easy to recover engineering plastics.
Further, according to the method of manufacturing a medical material manufacturing block according to the present invention, since the medical material manufacturing block is manufactured by injection molding, the medical material manufacturing block having a complicated shape having a chuck gripping portion and a cut portion It can be manufactured integrally with engineering plastics.
図１は、この発明に係る医療材料製造用ブロックの一例である歯科補綴物製造用ブロックの６面図である。図１（ａ）は、歯科補綴物製造用ブロックの正面図である。図１（ｂ）は、歯科補綴物製造用ブロックの左側面図である。図１（ｃ）は、歯科補綴物製造用ブロックの右側面図である。図１（ｄ）は、歯科補綴物製造用ブロックの背面図である。図１（ｅ）は、歯科補綴物製造用ブロックの平面図である。図１（ｆ）は、歯科補綴物製造用ブロックの底面図である。FIG. 1 is a six-sided view of a dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention. FIG. 1 (a) is a front view of a dental prosthesis manufacturing block. FIG. 1 (b) is a left side view of the dental prosthesis manufacturing block. FIG. 1 (c) is a right side view of the dental prosthesis manufacturing block. FIG. 1 (d) is a rear view of a dental prosthesis manufacturing block. FIG. 1 (e) is a plan view of a dental prosthesis manufacturing block. FIG. 1 (f) is a bottom view of the dental prosthesis manufacturing block. 図２は、切削装置の一例を示す説明図である。FIG. 2 is an explanatory view showing an example of a cutting device. 図３は、この発明に係る医療材料製造用ブロックの一例である医療材料製造用ブロックの６面図である。図３（ａ）は、医療材料製造用ブロックの正面図である。図３（ｂ）は、医療材料製造用ブロックの左側面図である。図３（ｃ）は、医療材料製造用ブロックの右側面図である。図３（ｄ）は、医療材料製造用ブロックの背面図である。図３（ｅ）は、医療材料製造用ブロックの平面図である。図３（ｆ）は、医療材料製造用ブロックの底面図である。FIG. 3 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention. FIG. 3 (a) is a front view of a medical material manufacturing block. FIG. 3B is a left side view of the medical material manufacturing block. FIG. 3C is a right side view of the medical material manufacturing block. FIG. 3D is a rear view of the medical material manufacturing block. FIG. 3E is a plan view of a medical material manufacturing block. FIG. 3F is a bottom view of the medical material manufacturing block. 図４は、この発明に係る医療材料製造用ブロックの一例である医療材料製造用ブロックの６面図である。図４（ａ）は、医療材料製造用ブロックの正面図である。図４（ｂ）は、医療材料製造用ブロックの左側面図である。図４（ｃ）は、医療材料製造用ブロックの右側面図である。図４（ｄ）は、医療材料製造用ブロックの背面図である。図４（ｅ）は、医療材料製造用ブロックの平面図である。図４（ｆ）は、医療材料製造用ブロックの底面図である。FIG. 4 is a six-sided view of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention. FIG. 4A is a front view of a medical material manufacturing block. FIG. 4B is a left side view of the medical material manufacturing block. FIG. 4C is a right side view of the medical material manufacturing block. FIG. 4 (d) is a rear view of the medical material manufacturing block. FIG. 4E is a plan view of the medical material manufacturing block. FIG. 4 (f) is a bottom view of the medical material manufacturing block. 図５は、この発明に係る医療材料製造用ブロックの一例である医療材料製造用ブロックの６面図である。図５（ａ）は、医療材料製造用ブロックの正面図である。図５（ｂ）は、医療材料製造用ブロックの左側面図である。図５（ｃ）は、医療材料製造用ブロックの右側面図である。図５（ｄ）は、医療材料製造用ブロックの背面図である。図５（ｅ）は、医療材料製造用ブロックの平面図である。図５（ｆ）は、医療材料製造用ブロックの底面図である。FIG. 5 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention. FIG. 5 (a) is a front view of a medical material manufacturing block. FIG. 5 (b) is a left side view of the medical material manufacturing block. FIG. 5C is a right side view of the medical material manufacturing block. FIG. 5D is a rear view of the medical material manufacturing block. FIG. 5E is a plan view of the medical material manufacturing block. FIG. 5F is a bottom view of the medical material manufacturing block. 図６は、この発明に係る医療材料製造用ブロックの一例である医療材料製造用ブロックの６面図である。図６（ａ）は、医療材料製造用ブロックの正面図である。図６（ｂ）は、医療材料製造用ブロックの左側面図である。図６（ｃ）は、医療材料製造用ブロックの右側面図である。図６（ｄ）は、医療材料製造用ブロックの背面図である。図６（ｅ）は、医療材料製造用ブロックの平面図である。図６（ｆ）は、医療材料製造用ブロックの底面図である。FIG. 6 is six views of a medical material manufacturing block which is an example of the medical material manufacturing block according to the present invention. FIG. 6A is a front view of a medical material manufacturing block. FIG. 6 (b) is a left side view of the medical material manufacturing block. FIG. 6C is a right side view of the medical material manufacturing block. FIG. 6D is a rear view of the medical material manufacturing block. FIG. 6 (e) is a plan view of the medical material manufacturing block. FIG. 6F is a bottom view of the medical material manufacturing block. 図７は、従来の歯科補綴物の製造工程を説明するための説明図である。FIG. 7 is an explanatory view for explaining a manufacturing process of a conventional dental prosthesis.
　この発明の医療材料製造用ブロックは、切削装置に固定されて切削されることにより、所望の形状を有する医療材料を製造するのに使用される。医療材料としては、骨、歯、弁等の代替材料及びこれらを固定する部品等を挙げることができ、体内に埋設等されて使用される。医療材料としては、治療のための材料だけでなく、美容整形等のための材料も含まれる。骨の代替材料としては、例えば、鼻骨、指骨等の人工骨、人工関節、及び人工脊椎等を挙げることができる。歯の代替材料としては、例えば、インレー、クラウン、ブリッジ、義歯、歯科インプラント等の歯科補綴物を挙げることができる。歯科インプラントには、顎の骨に埋め込むインプラントと、歯冠の代わりとなり人工歯とも称される上部構造と、これらを連結するアバットメントとが含まれる。弁の代替材料としては、例えば、僧帽弁、大動脈弁等に用いられるリーフレット等を挙げることができる。 The medical material manufacturing block of the present invention is used to manufacture a medical material having a desired shape by being fixed to a cutting device and being cut. Examples of medical materials include alternative materials such as bones, teeth, and valves, parts for fixing them, and the like, which are used by being embedded in the body. The medical materials include not only materials for treatment but also materials for cosmetic surgery and the like. As a bone substitute material, for example, a nasal bone, artificial bones such as phalanges, artificial joints, artificial spines and the like can be mentioned. As substitutes for teeth, for example, dental prostheses such as inlays, crowns, bridges, dentures, dental implants and the like can be mentioned. The dental implant includes an implant to be implanted in the bone of the jaw, an upper structure, which is also called an artificial tooth instead of a crown, and an abutment connecting these. As an alternative material of the valve, for example, leaflets used for mitral valve, aortic valve and the like can be mentioned.
（第１実施形態）
　以下において、この発明に係る医療材料製造用ブロックの一実施形態として、歯科補綴物を製造するのに用いられる歯科補綴物製造用ブロックの一例を、図面を参照しつつ説明する。図１は、この発明に係る歯科補綴物製造用ブロックの一例である歯科補綴物製造用ブロックの６面図である。図２は、切削装置の一例を示す説明図である。 First Embodiment
Hereinafter, an example of a dental prosthesis manufacturing block used to manufacture a dental prosthesis as one embodiment of a medical material manufacturing block according to the present invention will be described with reference to the drawings. FIG. 1 is a six-sided view of a dental prosthesis manufacturing block which is an example of a dental prosthesis manufacturing block according to the present invention. FIG. 2 is an explanatory view showing an example of a cutting device.
　図１に示すように、歯科補綴物製造用ブロック１は、切削装置１０のチャック１１に固定されるチャック把持部２と切削工具１２により切削される被切削部３とを有し、チャック把持部２と被切削部３とはエンジニアリングプラスチックにより一体に形成されてなる。 As shown in FIG. 1, the dental prosthesis manufacturing block 1 has a chuck holding portion 2 fixed to the chuck 11 of the cutting device 10 and a cut portion 3 cut by the cutting tool 12. 2 and the to-be-cut part 3 are integrally formed of engineering plastic.
　チャック把持部２と被切削部３とは、チャック把持部２と被切削部３とを別々に形成した後に接合して形成されているのではなく、射出成形等により一体に形成され、チャック把持部２と被切削部３とを接合する接合部を有さない。チャック把持部２と被切削部３とは、エンジニアリングプラスチックを素材とする一体物である。チャック把持部２と被切削部３とは、同一の材料により形成されるのが好ましいが、一体に形成されている限り、一部が別の材料で形成されていてもよい。例えば、チャック把持部２に繊維強化材料が含有され、被切削部３には繊維強化材料が含有されていない態様であってもよい。 The chuck gripping portion 2 and the portion to be cut 3 are not formed by separately forming the chuck gripping portion 2 and the portion to be cut 3 and then bonding them, but are integrally formed by injection molding or the like, There is no joint part joining the part 2 and the part 3 to be cut. The chuck gripping portion 2 and the portion to be cut 3 are an integral body made of engineering plastic. Although it is preferable that the chuck gripping portion 2 and the portion to be cut 3 are made of the same material, as long as they are integrally formed, a part may be made of another material. For example, the chucking portion 2 may contain a fiber reinforced material, and the cut portion 3 may not contain a fiber reinforced material.
　エンジニアリングプラスチックは、少なくとも切削装置に取り付けて切削加工を行うことができる強度を有する。また、エンジニアリングプラスチックは、適用される部位の生体骨又は歯に類似の力学的特性を有することが好ましい。適用される部位により異なるが、エンジニアリングプラスチックは、例えば、曲げ弾性率が３～３０ＧＰａであり、曲げ強度が５０～３００ＭＰａである。エンジニアリングプラスチックとしては、例えば、ポリエーテルエーテルケトン、ポリエーテルエーテルケトンケトン、ポリエーテルケトンケトン、ポリエーテルケトンエーテルケトンケトン等の芳香族ポリエーテルケトン、ポリアミド、ポリアミドイミド、ポリエーテルイミド、ポリフェニレンサルファイド、及び液晶ポリマー等の熱可塑性エンジニアリングプラスチック、並びに、メラミン、シリコーン、及びフェノール等の熱硬化性エンジニアリングプラスチックを挙げることができる。歯科補綴物製造用ブロック１は、１種類のエンジニアリングプラスチックで形成されてもよいし、また、２種以上を併用して形成されてもよい。歯科補綴物製造用ブロック１の素材としては、これらの中でも生体適合性に優れたポリエーテルエーテルケトン（ＰＥＥＫ）が好ましい。 The engineering plastic has a strength that can be attached to at least a cutting device to perform cutting. Also, it is preferred that the engineering plastic has mechanical properties similar to the living bone or teeth at the site of application. The engineering plastic has, for example, a flexural modulus of 3 to 30 GPa and a flexural strength of 50 to 300 MPa, although it varies depending on the part to be applied. Engineering plastics include, for example, polyetheretherketone, polyetheretherketoneketone, polyetherketoneketone, aromatic polyetherketone such as polyetherketoneetherketone ketone, polyamide, polyamideimide, polyetherimide, polyphenylene sulfide, and the like Mention may be made of thermoplastic engineering plastics, such as liquid crystal polymers, and thermosetting engineering plastics, such as melamine, silicone and phenol. The dental prosthesis manufacturing block 1 may be formed of one type of engineering plastic, or may be formed of two or more types in combination. Among these, polyetheretherketone (PEEK) excellent in biocompatibility is preferable as the material of the block 1 for producing a dental prosthesis.
　エンジニアリングプラスチックは、繊維が混合された繊維強化エンジニアリングプラスチックであってもよい。繊維強化エンジニアリングプラスチックに含有される繊維としては、例えば、カーボンナノチューブ等の炭素繊維、ガラス繊維、炭化ケイ素、アルミナ等のセラミック繊維、タングステン、モリブデン等の金属繊維、並びに、ポリエステル、ポリアミド等の有機繊維等を挙げることができる。これらの繊維は、１種単独で含有されてもよいし、２種以上の混合物が含有されてもよい。また、エンジニアリングプラスチックは、前述した繊維の素材と同様の素材からなる粒子を含む粒子含有エンジニアリングプラスチックであってもよい。 The engineering plastic may be a fiber reinforced engineering plastic mixed with fibers. Examples of fibers contained in fiber reinforced engineering plastics include carbon fibers such as carbon nanotubes, glass fibers, ceramic fibers such as silicon carbide and alumina, metal fibers such as tungsten and molybdenum, and organic fibers such as polyester and polyamide Etc. can be mentioned. These fibers may be contained singly or in combination of two or more. In addition, the engineering plastic may be a particle-containing engineering plastic including particles made of the same material as the above-described fiber material.
　エンジニアリングプラスチックは、必要に応じて、着色顔料、酸化防止剤、抗菌剤、安定化剤、及び変色防止剤等の従来公知の各種添加剤を含有してもよい。 The engineering plastic may contain, if necessary, conventionally known various additives such as a color pigment, an antioxidant, an antibacterial agent, a stabilizer, and a discoloration inhibitor.
　チャック把持部２は、切削装置１０のチャック１１に固定される部位である。チャック把持部２の形状及び大きさは、チャック１１に固定可能である限り特に限定されない。チャック把持部２は、チャック１１に挿入する方向に延在する軸線Ｏ方向からみて軸線Ｏを中心にして回転対称な形状を有するのが好ましい。また、チャック把持部２は、チャック１１に固定して切削可能な強度を有する。歯科補綴物製造用ブロック１の素材によっても異なるが、例えば、チャック把持部２は３ｍｍ以上の太さを有することが好ましい。図１に示すチャック把持部２は、略円柱状の棒状部４と棒状部４よりも大径の円盤部５とを有する。棒状部４は、図１（ａ）～（ｄ）に示すように、その軸線Ｏ方向の中央部にその他の部位よりも小径の括れ部６を有する。円盤部５は、図１（ｆ）に示すように、底面から見て円盤部５の外周面から棒状部４の外周面付近まで切り欠かれた切欠き部７を有する。切欠き部７は、切削装置１０のチャック１１に設けられている突起部に嵌め合わせることにより位置決めし、歯科補綴物製造用ブロック１が軸線Ｏを中心にして回転しないように固定するのに用いられる。他の手段により歯科補綴物製造用ブロック１が回転不能にチャック１１に固定可能であるため、切削装置１０が突起部を有していない場合には、切欠き部７を有する円盤部５はなくてもよい。 The chuck gripping portion 2 is a portion fixed to the chuck 11 of the cutting device 10. The shape and size of the chuck 2 are not particularly limited as long as they can be fixed to the chuck 11. The chuck grip 2 preferably has a rotationally symmetrical shape about the axis O as viewed from the direction of the axis O extending in the direction of insertion into the chuck 11. In addition, the chuck grip 2 has a strength that can be fixed to the chuck 11 and cut. Although different depending on the material of the dental prosthesis manufacturing block 1, for example, the chuck grip 2 preferably has a thickness of 3 mm or more. The chuck gripping portion 2 shown in FIG. 1 has a substantially cylindrical rod portion 4 and a disk portion 5 larger in diameter than the rod portion 4. As shown in FIGS. 1 (a) to 1 (d), the rod-like portion 4 has a neck portion 6 smaller in diameter than the other portions at the central portion in the direction of the axis O thereof. As shown in FIG. 1F, the disc portion 5 has a notch 7 cut out from the outer peripheral surface of the disc portion 5 to the vicinity of the outer peripheral surface of the rod portion 4 when viewed from the bottom. The notch 7 is positioned by being fitted to a protrusion provided on the chuck 11 of the cutting device 10, and used to fix the dental prosthesis manufacturing block 1 so as not to rotate about the axis O Be Since the dental prosthesis manufacturing block 1 can be non-rotatably fixed to the chuck 11 by other means, when the cutting device 10 does not have a projection, the disk 5 having the notch 7 is not present. May be
　被切削部３は、切削工具１２により切削されて、歯科補綴物が削り出される部位である。被切削部３の大きさ及び形状は、最終製造物である歯科補綴物を削り出すことができる大きさ及び形状である限り特に限定されない。図１に示す被切削部３は、正四角柱であり、チャック把持部２の円盤部５の直径よりも大きい幅を有する。被切削部３の寸法は、歯科用の場合、例えば、縦８～１６ｍｍ、横８～１６ｍｍ、高さ１２～２０ｍｍである。この被切削部３は正四角柱であるので、４つの側面のうちの２つの平面８ａ，８ｂは軸線Ｏに平行でかつ互いに平行に配置され、他の２つの平面９ａ，９ｂも軸線Ｏに平行でかつ互いに平行に配置されている。この被切削部３は、２組の互いに平行な一対の平面８ａ，８ｂ，９ａ，９ｂを有するので、開閉動作をする一対の挟持部を有する治具を備えた自動ワーク交換装置を使用して、被切削部３の側面を確実に挟持することができる。したがって、この被切削部３を有する歯科補綴物製造用ブロック１は、自動ワーク交換装置を備えたマシニングセンタを使用して効率的に歯科補綴物を製造することができる。 The portion to be cut 3 is a portion which is cut by the cutting tool 12 and the dental prosthesis is cut out. The size and shape of the portion to be cut 3 are not particularly limited as long as the size and shape are such that the final product dental prosthesis can be cut out. The portion to be cut 3 shown in FIG. 1 is a square prism and has a width larger than the diameter of the disk portion 5 of the chuck gripping portion 2. The dimensions of the portion 3 to be cut are, for example, 8 to 16 mm in length, 8 to 16 mm in width, and 12 to 20 mm in height in the case of dental use. Since this portion to be cut 3 is a square prism, two planes 8a and 8b of the four side surfaces are disposed parallel to the axis O and parallel to each other, and the other two planes 9a and 9b are also parallel to the axis O And are arranged parallel to one another. Since the to-be-cut portion 3 has two pairs of parallel flat surfaces 8a, 8b, 9a, 9b, it is possible to use an automatic work changer equipped with a jig having a pair of holding portions that perform opening and closing operations. The side surface of the portion 3 to be cut can be reliably held. Therefore, the dental prosthesis manufacturing block 1 having the portion to be cut 3 can efficiently produce a dental prosthesis using a machining center equipped with an automatic work changer.
　切削装置１０は、歯科補綴物製造用ブロック１におけるチャック把持部２を固定し、被切削部３を切削して歯科補綴物を削り出すことができる限り、特に限定されない。切削装置としては、普通旋盤、数値制御工作機械、及びマシニングセンタ等を挙げることができる。数値制御工作機械は、切削工具１２と歯科補綴物製造用ブロック１との間の相対運動を数値化した情報によって指令し、自動加工する機械である。マシニングセンタは、数値制御工作機械にさらに、１回の取り付けでフライス削りや穴あけ等の複数の作業ができる自動工具交換装置を備えた装置であり、好ましくはさらにワークの自動取り付けを行う自動ワーク交換装置を備える。 The cutting device 10 is not particularly limited as long as it can fix the chuck gripping portion 2 in the dental prosthesis manufacturing block 1 and can cut the portion to be cut 3 to cut out the dental prosthesis. Examples of the cutting device include a common lathe, a numerically controlled machine tool, and a machining center. The numerically controlled machine tool is a machine that commands and automatically processes relative motion between the cutting tool 12 and the dental prosthesis manufacturing block 1 by numerical information. The machining center is an apparatus equipped with an automatic tool changer capable of performing a plurality of operations such as milling and drilling in a single attachment to a numerically controlled machine tool, preferably an automatic work changer further performing automatic attachment of a work. Equipped with
　図２に示す切削装置１０は、歯科補綴物製造用ブロック１を固定するチャック１１を有する本体部１３と、切削工具１２を有する切削部１４と、コンピュータ１５とを有するマシニングセンタである。コンピュータ１５は、入力された３次元ＣＡＤデータから切削条件を設定してＮＣデータを作成するＮＣデータ作成部と、ＮＣデータに基づいて本体部１３及び切削部１４の動作を制御する制御部とを有する。３次元ＣＡＤデータはインターネット等の通信手段によりコンピュータ１５に入力されてもよいし、可搬性のメモリーに保存して搬送し、コンピュータ１５に取り込むようにしてもよい。また、ＮＣデータ作成部と制御部とが別々のコンピュータとして離れた場所に設置され、ＮＣデータ作成部で作成されたＮＣデータが通信手段等により制御部を有するコンピュータに送信されるようにしてもよい。チャック１１の構造は、チャック１１の主軸に沿ってチャック把持部２を取り付けることができる限り特に限定されず、例えば、３つづめ連動チャック、４つづめ単動チャック等を挙げることができる。切削工具１２は、旋盤で使用される公知の切削工具を使用することができ、例えば、バイト、エンドミル等を挙げることができる。この切削装置１０は、チャック１１に固定された歯科補綴物製造用ブロック１を自動加工して、個々の患者に合わせた形状を有する歯科補綴物を切り出すことができる。図２には示していないが、切削装置１０は、歯科補綴物製造用ブロック１及び切削工具１２をそれぞれ自動交換する自動工具交換装置及び自動ワーク交換装置を有するので、生産効率を向上させることができる。 The cutting device 10 shown in FIG. 2 is a machining center having a main body 13 having a chuck 11 for fixing the dental prosthesis manufacturing block 1, a cutting portion 14 having a cutting tool 12, and a computer 15. The computer 15 sets an NC data creation unit that sets cutting conditions from the input three-dimensional CAD data to create NC data, and a control unit that controls the operation of the main unit 13 and the cutting unit 14 based on the NC data. Have. The three-dimensional CAD data may be input to the computer 15 by communication means such as the Internet, or may be stored and transported in a portable memory and taken into the computer 15. Also, even if the NC data creation unit and the control unit are installed as separate computers separated from each other and the NC data created by the NC data creation unit is transmitted to the computer having the control unit by communication means or the like. Good. The structure of the chuck 11 is not particularly limited as long as the chuck grip 2 can be attached along the main axis of the chuck 11. For example, a three-stroke interlocking chuck or a four-stroke single-action chuck can be mentioned. The cutting tool 12 can use the well-known cutting tool used by a lathe, for example, a cutting tool, an end mill, etc. can be mentioned. The cutting device 10 can automatically process the dental prosthesis manufacturing block 1 fixed to the chuck 11 to cut out a dental prosthesis having a shape adapted to an individual patient. Although not shown in FIG. 2, since the cutting device 10 has an automatic tool changer and an automatic work changer for automatically changing the dental prosthesis manufacturing block 1 and the cutting tool 12 respectively, the production efficiency can be improved. it can.
　この歯科補綴物製造用ブロック１は、エンジニアリングプラスチックにより一体に形成されているので、従来のように、エンジニアリングプラスチック製の被切削物を金属製のチャック把持体に接着する作業がない。そのため、チャック把持体と被切削物とを接着する際のセンター合わせもないので、歯科補綴物製造用ブロック毎の寸法にばらつきがない。したがって、寸法のばらつきによって生じる切削装置１０の調整をする必要がない。また、歯科補綴物製造用ブロック毎の寸法にばらつきがないので、寸法精度の高い歯科補綴物を製造することができる。また、従来のように、被切削物から歯科補綴物を削り出した後に、チャック把持体の台座に残っている被切削物を除去する作業もない。したがって、この歯科補綴物製造用ブロック１によると、切削加工により歯科補綴物を製造する際の工程数を減らすことができ、その結果、歯科補綴物の製造に要する時間を短縮することができ、また、寸法精度の高い歯科補綴物を製造することができる。
　しかも、歯科補綴物製造用ブロックから歯科補綴物等を切削した後に生じる、チャック把持体を含む残り物はそのまま回収してエンジニアリングプラスチックの再利用を図ることができる。 Since this dental prosthesis manufacturing block 1 is integrally formed of engineering plastic, there is no work of bonding an object made of engineering plastic to a metal chuck gripper as in the prior art. Therefore, since there is no center alignment at the time of bonding the chuck grip and the object to be cut, there is no variation in the size of each block for manufacturing a dental prosthesis. Therefore, there is no need to adjust the cutting device 10 that is caused by the dimensional variation. In addition, since there is no variation in the dimensions of each dental prosthesis manufacturing block, a dental prosthesis with high dimensional accuracy can be manufactured. In addition, as in the prior art, there is no work to remove the object remaining on the pedestal of the chuck holder after cutting out the dental prosthesis from the object. Therefore, according to the dental prosthesis manufacturing block 1, the number of steps in manufacturing the dental prosthesis can be reduced by cutting, and as a result, the time required for manufacturing the dental prosthesis can be shortened. Also, a dental prosthesis with high dimensional accuracy can be manufactured.
In addition, it is possible to recover the remaining material including the chuck grip, which is produced after cutting the dental prosthesis or the like from the dental prosthesis manufacturing block, and to reuse the engineering plastic.
　次に、歯科補綴物製造用ブロック１の製造方法の一例について説明する。
　歯科補綴物製造用ブロック１は、チャック把持部２と被切削部３とがエンジニアリングプラスチックにより一体に形成される限り、その製造方法は特に限定されない。歯科補綴物製造用ブロック１は、例えば、射出成形等により製造することができる。 Next, an example of a method of manufacturing the dental prosthesis manufacturing block 1 will be described.
The manufacturing method of the dental prosthesis manufacturing block 1 is not particularly limited as long as the chuck gripping portion 2 and the portion to be cut 3 are integrally formed of an engineering plastic. The dental prosthesis manufacturing block 1 can be manufactured, for example, by injection molding or the like.
　射出成形により歯科補綴物製造用ブロック１を製造する方法では、まず、歯科補綴物製造用ブロック１の外周面の形状と同じ形状の内周面を有するキャビティを備えた金型を準備する。この金型のキャビティ内に融点以上の温度に加熱して溶融したエンジニアリングプラスチックを所定の射出圧を加えて射出する。例えば、ＰＥＥＫの場合には、約３８０℃に加熱して金型のキャビティ内に射出する。次いで、金型を冷却することによりエンジニアリングプラスチックを固化させて、脱型する。脱型した後の成形物は、目的とする歯科補綴物製造用ブロック１だけでなく、溶融したエンジニアリングプラスチックを注入する入口路であるスプルーに充填されたエンジニアリングプラスチックを有する。したがって、成形物からスプルーに充填されたエンジニアリングプラスチックを切除することにより、歯科補綴物製造用ブロック１が得られる。 In the method of manufacturing the dental prosthesis manufacturing block 1 by injection molding, first, a mold having a cavity having an inner peripheral surface having the same shape as the outer peripheral surface of the dental prosthesis manufacturing block 1 is prepared. A engineering plastic melted by heating to a temperature above the melting point is injected into the cavity of the mold under application of a predetermined injection pressure. For example, in the case of PEEK, it is heated to about 380 ° C. and injected into the mold cavity. Then, the engineering plastic is solidified by cooling the mold and then demolded. The molding after demolding has not only the target dental prosthesis manufacturing block 1 but also the engineering plastic filled in sprues, which is an inlet path for injecting the molten engineering plastic. Therefore, the dental prosthesis manufacturing block 1 is obtained by cutting the engineering plastic filled in the sprue from the molding.
　次に、歯科補綴物製造用ブロック１を切削装置１０に装着して、歯科補綴物を製造する方法の一例について説明する。 Next, an example of a method of manufacturing the dental prosthesis by mounting the dental prosthesis manufacturing block 1 on the cutting device 10 will be described.
　まず、クラウン等の歯科補綴物の模型を作製し、これをスキャニングして３次元ＣＡＤデータを取得する。３次元ＣＡＤデータを切削装置１０のコンピュータ１５に入力し、コンピュータ１５において、３次元ＣＡＤデータから切削工具の種類、送り速度、回転数、位置等の切削条件を設定し、切削装置１０の加工プログラムであるＮＣデータを作成する。 First, a model of a dental prosthesis such as a crown is prepared and scanned to acquire three-dimensional CAD data. Three-dimensional CAD data is input to the computer 15 of the cutting device 10, and the computer 15 sets cutting conditions such as the type of the cutting tool, feed rate, rotational speed, position and the like from the three-dimensional CAD data. Create NC data that is
　一方、挟持部を有するロボット等で歯科補綴物製造用ブロック１の被切削部３の側面を挟持して、チャック把持部２を切削装置１０のチャック１１に挿入し、チャック１１の主軸と歯科補綴物製造用ブロック１の軸線Ｏとが一致するように固定する。この操作は、ロボット等により自動で行われるのが生産効率の点で好ましい。 On the other hand, the side of the portion 3 to be cut of the dental prosthesis manufacturing block 1 is held by a robot having a holding portion, and the chuck holding portion 2 is inserted into the chuck 11 of the cutting device 10. It fixes so that the axis line O of the block 1 for thing manufacture may correspond. This operation is preferably performed automatically by a robot or the like in terms of production efficiency.
　次いで、コンピュータ１５におけるＮＣデータに基づいて、本体部１３及び切削部１４を作動させることにより、所望の形状を有する歯科補綴物が得られる。得られた歯科補綴物は、必要に応じて研磨加工等が行われる。歯科補綴物が切り出された後の歯科補綴物製造用ブロックは、そのまま破棄してもよいが、再利用することもできる。 Then, based on the NC data in the computer 15, the main body 13 and the cutting portion 14 are operated to obtain a dental prosthesis having a desired shape. The obtained dental prosthesis is subjected to polishing processing and the like as needed. The dental prosthesis manufacturing block after the dental prosthesis has been cut may be discarded as it is, but may be reused.
　この歯科補綴物の製造方法によると、歯科補綴物製造用ブロック１を射出成形により製造するので、チャック把持部２と被切削部３とを有する複雑な形状の歯科補綴物製造用ブロック１をエンジニアリングプラスチックで一体に製造することができる。また、エンジニアリングプラスチックで一体に形成された歯科補綴物製造用ブロック１を用いて歯科補綴物を製造するので、歯科補綴物の製造に要する時間を短縮することができ、また、寸法精度の高い歯科補綴物を製造することができる。 According to this method of manufacturing a dental prosthesis, since the dental prosthesis manufacturing block 1 is manufactured by injection molding, the complex-shaped dental prosthesis manufacturing block 1 having the chuck holding portion 2 and the cut portion 3 is engineered It can be manufactured integrally with plastic. Further, since the dental prosthesis is manufactured using the dental prosthesis manufacturing block 1 integrally formed of the engineering plastic, the time required for manufacturing the dental prosthesis can be shortened, and the dental having high dimensional accuracy can be obtained. Prostheses can be manufactured.
　この発明に係る医療材料製造用ブロックの一例である歯科補綴物製造用ブロック、及びこの発明に係る医療材料製造用ブロックの製造方法の一例である歯科補綴物製造用ブロックの製造方法は、前記実施形態に限定されず、この発明の目的を達成することができる範囲において、種々の変更が可能である。 A dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention, and a manufacturing method of a dental prosthesis manufacturing block which is an example of a medical material manufacturing block according to the present invention are the embodiments described above. The present invention is not limited to the embodiment, and various modifications are possible as long as the object of the present invention can be achieved.
（第２実施形態）
　第２実施形態の医療材料製造用ブロック１０１は、被切削部１０３が略円柱状であること以外は、第１実施形態の医療材料製造用ブロック１と同様の構成を有する。図３（ｅ）及び（ｆ）に示すように、この医療材料製造用ブロック１０１は、軸線Ｏ１に平行でかつ互いに平行な一対の平面１０８ａ，１０８ｂを有し、その他の側面は断面円形の曲面である。 Second Embodiment
The medical material manufacturing block 101 of the second embodiment has the same configuration as that of the medical material manufacturing block 1 of the first embodiment except that the portion to be cut 103 has a substantially cylindrical shape. As shown in FIGS. 3 (e) and 3 (f), the medical material manufacturing block 101 has a pair of flat surfaces 108a and 108b parallel to the axis O 1 and parallel to each other, and the other side is circular in cross section. It is a curved surface.
（第３実施形態）
　第３実施形態の医療材料製造用ブロック２０１は、被切削部２０３が軸線Ｏ２方向から見て六角形であること以外は、第１実施形態の医療材料製造用ブロック１と同様の構成を有する。図４（ｅ）及び（ｆ）に示すように、この医療材料製造用ブロック２０１は、軸線Ｏ２に平行でかつ互いに平行な一対の平面２０８ａ，２０８ｂ，２０９ａ，２０９ｂ，２１０ａ，２１０ｂを３組有する。 Third Embodiment
Medical materials for producing block 201 of the third embodiment, except that the cutting portion 203 is hexagonal as viewed from the axial O 2 direction, has the same configuration as the medical material manufactured block 1 of the first embodiment . As shown in FIGS. 4 (e) and 4 (f), this medical material manufacturing block 201 is composed of three pairs of flat surfaces 208a, 208b, 209a, 209b, 210a, 210b parallel to the axis O 2 and parallel to each other. Have.
（第４実施形態）
　第４実施形態の医療材料製造用ブロック３０１は、被切削部３０３が軸線Ｏ３方向から見て八角形であること以外は、第１実施形態の医療材料製造用ブロック１と同様の構成を有する。図５（ｅ）及び（ｆ）に示すように、この医療材料製造用ブロック３０１は、軸線Ｏ３に平行でかつ互いに平行な一対の平面３０８ａ，３０８ｂ，３０９ａ，３０９ｂ，３１０ａ，３１０ｂ，３１１ａ，３１１ｂを４組有する。 Fourth Embodiment
Medical materials for producing block 301 of the fourth embodiment, except that the cutting portion 303 is octagonal as viewed from the axis O 3 direction, has the same configuration as medical materials for producing block 1 of the first embodiment . As shown in FIG. 5 (e) and (f), the medical material production block 301 is parallel to the axis O 3 and mutually parallel pair of flat 308a, 308b, 309a, 309b, 310a, 310b, 311a, There are four sets of 311b.
（第５実施形態）
　第５実施形態の医療材料製造用ブロック４０１は、被切削部４０３が軸線Ｏ４方向から見て十二角形であること以外は、第１実施形態の医療材料製造用ブロック１と同様の構成を有する。図６（ｅ）及び（ｆ）に示すように、この医療材料製造用ブロック４０１は、軸線Ｏ４に平行でかつ互いに平行な一対の平面４０８ａ，４０８ｂ，４０９ａ，４０９ｂ，４１０ａ，４１０ｂ，４１１ａ，４１１ｂ，４１２ａ，４１２ｂ，４１３ａ，４１３ｂを５組有する。 Fifth Embodiment
Medical materials for producing block 401 of the fifth embodiment, except that the cutting portion 403 is dodecagon as viewed from the axial O 4 direction, the same configuration as medical materials for producing block 1 of the first embodiment Have. As shown in FIG. 6 (e) and (f), the medical material production block 401 is parallel to the axis O 4 and a pair of parallel planes 408a together, 408b, 409a, 409b, 410a , 410b, 411a, There are five sets of 411b, 412a, 412b, 413a, and 413b.
１　　医療材料製造用ブロック、歯科補綴物製造用ブロック
１０１、２０１、３０１、４０１　　医療材料製造用ブロック
２、１０２、２０２、３０２、４０２　　チャック把持部
３、１０３、２０３、３０３、４０３　　被切削部
４　　棒状部
５　　円盤部
６　　括れ部
７　　切欠き部
８ａ，８ｂ，９ａ，９ｂ，１０８ａ，１０８ｂ，２０８ａ，２０８ｂ，２０９ａ，２０９ｂ，２１０ａ，２１０ｂ，３０８ａ，３０８ｂ，３０９ａ，３０９ｂ，３１０ａ，３１０ｂ，３１１ａ，３１１ｂ，４０８ａ，４０８ｂ，４０９ａ，４０９ｂ，４１０ａ，４１０ｂ，４１１ａ，４１１ｂ，４１２ａ，４１２ｂ，４１３ａ，４１３ｂ　　平面
１０９　　曲面
１０　　切削装置
１１　　チャック
１２　　切削工具
１３　　本体部
１４　　切削部
１５　　コンピュータ 1 Medical material manufacturing block, Dental prosthesis manufacturing block 101, 201, 301, 401 Medical material manufacturing block 2, 102, 202, 302, 402 Chuck gripping portion 3, 103, 203, 303, 403 Cutting portion 4 Rod portion 5 Disk portion 6 Convex portion 7 Notches 8a, 8b, 9a, 9b, 108a, 108b, 208a, 208b, 209a, 209b, 210a, 210b, 308a, 308b, 309a, 309b, 310a, 310b, 311a, 311 311b, 408a, 408b, 409a, 409b, 410a, 410b, 411a, 411b, 412a, 412b, 413a, 413b, flat surface 109, curved surface 10, cutting device 11, chuck 12, cutting tool 13, main body portion 14, cutting portion 15, computer

Claims (5)

  1. 　切削装置のチャックに固定されるチャック把持部と切削工具により切削される被切削部とを有し、前記チャック把持部と前記被切削部とはエンジニアリングプラスチックにより一体に形成されてなることを特徴とする医療材料製造用ブロック。 It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of an engineering plastic. Medical material manufacturing block.
  2. 　前記被切削部は、前記チャックに挿入する方向に延在する前記チャック把持部の軸線に平行でかつ互いに平行な一対の平面を少なくとも１組有することを特徴とする請求項１に記載の医療材料製造用ブロック。 The medical material according to claim 1, wherein the portion to be cut has at least one pair of flat surfaces parallel to each other and parallel to an axis of the chuck grip extending in a direction to be inserted into the chuck. Manufacturing block.
  3. 　前記エンジニアリングプラスチックは、ポリエーテルエーテルケトンであることを特徴とする請求項１又は２に記載の医療材料製造用ブロック。 The block for manufacturing a medical material according to claim 1 or 2, wherein the engineering plastic is polyetheretherketone.
  4. 　切削装置のチャックに固定されるチャック把持部と切削工具により切削される被切削部とを有し、前記チャック把持部と前記被切削部とはエンジニアリングプラスチックにより一体に形成されてなることを特徴とする歯科補綴物製造用ブロック。 It has a chuck grip portion fixed to a chuck of a cutting device and a cut portion cut by a cutting tool, and the chuck grip portion and the cut portion are integrally formed of an engineering plastic. Blocks for manufacturing dental prostheses.
  5. 　請求項１～３のいずれか一項に記載の医療材料製造用ブロックの製造方法であって、射出成形により製造することを特徴とする医療材料製造用ブロックの製造方法。 The method for producing a medical material production block according to any one of claims 1 to 3, which is produced by injection molding.
PCT/JP2015/077454 2015-09-29 2015-09-29 Block for medical material fabrication, block for dental prosthesis fabrication, and method for fabricating block for medical material fabrication WO2017056180A1 (en)

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PCT/JP2015/077454 WO2017056180A1 (en) 2015-09-29 2015-09-29 Block for medical material fabrication, block for dental prosthesis fabrication, and method for fabricating block for medical material fabrication

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019044470A1 (en) * 2017-08-31 2019-03-07 三井化学株式会社 Dental composition, dental mill blank, dental member and production method therefor, denture base and production method therefor, and plate denture and production method therefor
JP7512045B2 (en) 2020-02-14 2024-07-08 Ｄｇｓｈａｐｅ株式会社 Retention attachment for denture abutment, cutting machine, and method for manufacturing denture abutment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238957A (en) * 1996-03-04 1997-09-16 Technol Res Assoc Of Medical & Welfare Apparatus Manufacture of dental prosthesis and material for processing the same
JPH105249A (en) * 1996-03-29 1998-01-13 Siemens Ag Raw material used for producing dental forming member
WO1999061202A1 (en) * 1998-05-28 1999-12-02 Kabushiki Kaisya Advance Method and device for machining prosthetic appliance and prosthetic block
JP2007229127A (en) * 2006-02-28 2007-09-13 Gc Corp Block holder for dental prosthesis
JP2009513174A (en) * 2003-07-07 2009-04-02 ジロナ デンタール システムス ゲゼルシャフト ミット ベシュレンクテル ハフツング Blank for manufacturing a dental technical molded part and method for manufacturing the molded part

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665551A5 (en) * 1984-03-06 1988-05-31 Werner Hans Dr Med De Moermann BLANK FOR THE MANUFACTURE OF DENTAL TECHNOLOGY MOLDED PARTS.
WO2015059761A1 (en) * 2013-10-22 2015-04-30 株式会社ユニックスジャパン Dental abutment and dental resin material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09238957A (en) * 1996-03-04 1997-09-16 Technol Res Assoc Of Medical & Welfare Apparatus Manufacture of dental prosthesis and material for processing the same
JPH105249A (en) * 1996-03-29 1998-01-13 Siemens Ag Raw material used for producing dental forming member
WO1999061202A1 (en) * 1998-05-28 1999-12-02 Kabushiki Kaisya Advance Method and device for machining prosthetic appliance and prosthetic block
JP2009513174A (en) * 2003-07-07 2009-04-02 ジロナ デンタール システムス ゲゼルシャフト ミット ベシュレンクテル ハフツング Blank for manufacturing a dental technical molded part and method for manufacturing the molded part
JP2007229127A (en) * 2006-02-28 2007-09-13 Gc Corp Block holder for dental prosthesis

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019044470A1 (en) * 2017-08-31 2019-03-07 三井化学株式会社 Dental composition, dental mill blank, dental member and production method therefor, denture base and production method therefor, and plate denture and production method therefor
JP7512045B2 (en) 2020-02-14 2024-07-08 Ｄｇｓｈａｐｅ株式会社 Retention attachment for denture abutment, cutting machine, and method for manufacturing denture abutment

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