WO2018195639A1 - Material pré-fabricado de fibra, seu uso para produção de materiais odontológicos, material odontológico e processo de obtenção - Google Patents
Material pré-fabricado de fibra, seu uso para produção de materiais odontológicos, material odontológico e processo de obtenção Download PDFInfo
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- WO2018195639A1 WO2018195639A1 PCT/BR2018/050139 BR2018050139W WO2018195639A1 WO 2018195639 A1 WO2018195639 A1 WO 2018195639A1 BR 2018050139 W BR2018050139 W BR 2018050139W WO 2018195639 A1 WO2018195639 A1 WO 2018195639A1
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- resin
- dental
- fiber
- prefabricated
- material according
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Classifications
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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
- A61C13/225—Fastening prostheses in the mouth
- A61C13/30—Fastening of peg-teeth in the mouth
-
- 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
-
- 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
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0022—Blanks or green, unfinished dental restoration parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
Definitions
- the present invention relates to the production of a prefabricated fiber material, preferably in block or disc shape, but particularly based on: glass fiber, quartz carbon fiber, polyethylene fiber or fiber. aramid, or combination thereof; BIS-GMA, epoxy or polyester based resin or combination thereof; radiopacifiers such as calcium tungstate, triphenylphosphine, zirconia, zirconia oxide, barium oxide, barium glass, bismuth carbonate, or combinations of, but not limited to, aggregates with the resin or present in the fiber composition.
- the prefabricated material is ready for use in the manufacture of materials for use in dentistry, particularly for manufacturing dental cores, ie cores containing pin and the coronary part in one piece for dental support.
- restoration procedures using prostheses are indicated, for example, when the patient loses the tooth crown (part of the tooth containing the enamel) by caries or trauma, but the root remains. In these cases, there is an indication for a dental prosthesis (artificial tooth).
- the first step in such cases is to do the root canal treatment and then place a dental core inside the canal to support the prosthesis.
- Said dental nucleus is composed of two parts: the pin that is inside the canal and the coronary part that is continuity of the pin and is exposed in the mouth.
- the prosthesis (crown, veneer, inlay, onlay, etc.) is fabricated over the coronary part of said dental nucleus.
- the dental nuclei are made of metal, receiving the name of molten metallic nucleus (NMF). Because it is a traditional technique, it is widespread in dentistry, becoming of general use.
- NMF molten metallic nucleus
- An advantage of the MF is the high retention because it is produced anatomically ie it fits all the walls of the canal ensuring that there is no displacement, which would lead to the fall of the dental core along with the prosthesis that was positioned. about the same. In short, it is manufactured "tailored to the channel".
- NMF has some disadvantages, such as the use of metal as a raw material, which besides being aesthetic can oxidize and generate a metallic taste in the patient's mouth. Another disadvantage is that it causes root fracture leading to tooth loss.
- Fractures occur due to the high modulus of elasticity of the metal (material stiffness). If an excessive force is applied to the tooth containing the metal pin, because it does not suffer flexion due to stiffness, it transfers the forces entirely to the root causing its fracture.
- prefabricated glass fiber posts As an alternative to cores made by the process described above using NMF, prefabricated glass fiber posts (PPFFV) have emerged in recent years.
- the process for using fiberglass pins although having the same function, differs from the metal core as it is performed entirely by the dentist, dispensing the services of a prophetic.
- the dentist buys the prefabricated fiberglass pin on the market, which is available in many designs, shapes and sizes. In the operative procedure the pin that best fits the patient's tooth is selected and cemented into the canal.
- the pin does not have the coronary part, a dense resin is applied over the out-of-the-canal part of the pin exposed in the mouth, creating a substrate; On this substrate the dentist applies the dental resin with spatulas, causes hardening and sculpts with drills, producing the coronary part of the dental core. Finally over the dental core that will be cemented into the canal, the dentist positions the prosthesis (crown, veneer, inlay, onlay, etc.).
- US Patent 5,328,372 issued in 1994, describes a root-crown reconstitution system comprising: producing a pin and a crown.
- the pin being produced by composite material made of resin-embedded carbon fiber.
- the fibers being arranged continuously from one end of the pin to the other end of the pin, parallel to each other and in axial direction of the pin, the fibers may represent from 40% to 80% of the final composite material; and a crown made of self-curing polyurethane acrylic resin filled with small lubricated glass fibers. These small glass fibers being arranged randomly.
- the use of the PPFFV technique has the advantages of being aesthetic and not causing metallic taste as it is made of fiberglass (or even fiber from other materials such as carbon) and therefore does not oxidize.
- the fiberglass pin has a low modulus of elasticity (high flexibility) which, if applied excessive force on the tooth containing it, bends, reducing the tension on the root structure, which for example. in turn greatly reduces the risk of root fracture, which would lead to tooth loss.
- PPFFV has as disadvantage the need for a complex operative technique. Because it is a technique where the pin is prefabricated with predefined diameters, ie not customized, they do not fit all the walls of the channel as is obtained by using the technique of making the molten metal cores. Thus, PPFFV are little retentive. Therefore, due to the lack of good adaptation, it is necessary in the cementation of the pin to create some devices that demand, to fill the empty spaces between the pin and the channel walls, other materials and creativity by the professional, as well as a procedure of extremely accurate cementation to compensate for the lack of a good adaptation of it to the canal walls.
- CAD / CAM computer designed
- CAM equipment
- materials metal, ceramics, resins, waxes, etc.
- Said block is formed of a particulate composite material which comprises a polymeric matrix (this may be or mixtures thereof: polyamides, polyolefins, polyarylates, polyesters, polyimides, polyarylates, etc.), a particulate component (which may be this or mixtures thereof: silica, borosilicate glass, quartz, etc.) and a fibrous material (may be: fiberglass, carbon, graphite , polyamide, polyester, polyamide or a mixture thereof).
- Said particulate material is present in an amount of up to about 30% and said fibrous material may be distributed randomly or evenly in the polymer matrix and in an amount ranging from 20 to 30%.
- TRINIA TM fiberglass discs and blocks are ready for use in CAD / CAM material manufacturing and are intended for use by dental technicians and dentists to make copings, substructures or bars for anterior or posterior crowns, bridges and substructures that can be cemented or non-cemented such as telescopic restorations.
- a prefabricated fiber block or disc to contain from 40 to 85% fibers
- the block or disc can be manufactured in a variety of different sizes and dimensions continuously, including for example, but not limited to, 98mm diameter discs ranging in thickness from 14 to 22mm, or 40x19x15mm rectangular blocks, or any other shape, size or dimension which would be suitable for use in apparatus CAD / CAM or any other machining system.
- the fibers are unidirectionally arranged so that the dental core made from the block or disc has the fibers arranged in their longitudinal direction.
- the present invention aims to propose a prefabricated material, more particularly in the form of prefabricated fiber block or disc, more particularly the fiberglass base, resin and radiopacifier (s), ready for use. in manufacturing via CAD / CAM or manually, including but not limited to, machining, carving, cutting, grinding, engraving and abrasion of dental materials, particularly dental materials which need to be able to withstand high chewing forces, more particularly dental cores, i.e., pin-containing cores and the coronary part in one piece for dental prostheses.
- the prefabricated fiber block or disc may contain from 40 to 85% fiber, wherein they are unidirectionally arranged so that the fabricated core has the fibers disposed in their longitudinal direction.
- a prefabricated fiber material has been developed, more particularly in the form of a block or disc, ready for use in the manufacture of materials for use in dentistry, particularly dental materials which need to be manufactured. able to withstand high forces chewing without fractures, particularly for the manufacture of dental cores, ie dental cores containing pin and the coronary part in one piece for dental prostheses.
- Said prefabricated material consists of fiber (s), resin (s) and radiopacifier (s), wherein the fibers may be: glass fiber, quartz fiber, carbon fiber, polyethylene fiber and aramid fiber or combination thereof and the resins may be any resin, preferably crosslink resin such as, but not limited to BIS-GMA, epoxy, polyester, resin or combination thereof and the radipacifiers may be: calcium tungstate, triphenylphosphine, zirconia, zirconia oxide, barium oxide, barium glass, bismuth carbonate, or combinations thereof, but not limited to them, attached to the resin or present in the fiber composition, wherein the fibers are unidirectionally ordered in said precursor material It is manufactured in such a way that the dental core manufactured from it has the fibers arranged in their longitudinal direction (long axis of the dental core).
- the fibers may be: glass fiber, quartz fiber, carbon fiber, polyethylene fiber and aramid fiber or combination thereof and the resins may be any resin, preferably crosslink resin such as, but not limited
- FIGURE 1 shows a tooth with the channel prepared to receive a dental core.
- FIGURE 2 shows said pre-filled material. manufactured in disc and block form showing the fibers positioned unidirectionally upright.
- FIGURE 3 shows a section of said disc and block shaped prefabricated material, showing the unidirectionally ordered fibers, with the dental material, but particularly the dental core, being fabricated so that the fibers are vertically ordered to the side. its long axis.
- FIGURE 4 shows the dental core manufactured from said prefabricated material, wherein the fibers in the dental core are positioned longitudinally in a vertical direction, which will resist the chewing forces incident on it.
- FIGURE 5 shows the dental core, made from said prefabricated material, wherein the fibers in the dental core are longitudinally positioned in a vertical direction, said core being positioned within the dental canal with its component parts: pin and coronary part.
- the present invention relates to a prefabricated material, but particularly in the form of a fiber block or disc ready for use in the manufacture of materials for use in dentistry, particularly for the manufacture of any dental materials requiring the ability to withstand large chewing efforts without suffer fractures, more particularly for manufacturing dental cores, ie cores containing pin and coronary part in a single piece for dental prostheses.
- Said prefabricated material consisting of fiber (s), resin (s) and radiopacifier (s), wherein the fiber comprises at least one of the fibers of the group consisting of: fiberglass, quartz fiber, fiber of carbon, polyethylene fiber or aramid fiber, or a combination thereof; at least one resin, preferably any crosslink resin such as: but not limited to BIS-GMA, epoxy, polyester, resin or combination thereof; and at least one radipacifier, preferably one of the radiopacifiers of the group consisting of: calcium tungstate, triphenylphosphine, zirconia, zirconia oxide, barium oxide, barium glass, bismuth carbonate, or combinations thereof, but not limited to which are attached to the resin or present in the fiber composition, wherein the fibers are unidirectionally ordered in said prefabricated material such that the dental material manufactured from it has the fibers arranged in the sense that the manufactured dental material is capable of withstand greater strength in use, that is, withstand large chewing efforts without suffering fractures.
- the prefabricated material of the present invention comprises 40% to 85% fiber, 11% to 59% resin and 1% to 4% radiopacifier in its composition, plus particularly 70% to 85% fiber, 11% to 29% resin and 1% to 4% radiopacifier, more particularly 78% to 82% fiber, 14% to 21% resin and 1 % to 4% radiopacifier, wherein the radiopacifier may be aggregated in the resin or fiber composition.
- the resin may be a resin-based formulation, preferably crosslink resin such as, but not limited to BIS-GMA, epoxy, polyester, resin or a combination thereof, which may further comprise at least one hardening agent, at least one accelerating agent, at least one release agent and at least one pigment, which may be chosen from a variety of compounds which exhibit such effects and which are widely known to one skilled in the art.
- crosslink resin such as, but not limited to BIS-GMA, epoxy, polyester, resin or a combination thereof, which may further comprise at least one hardening agent, at least one accelerating agent, at least one release agent and at least one pigment, which may be chosen from a variety of compounds which exhibit such effects and which are widely known to one skilled in the art.
- the at least one hardening agent may be an anhydride-based compound, more particularly from the group consisting of: hexahydrophthalic anhydride (HHPA), tetrahydrophthalic anhydride (THPA), nomadic methyl anhydride (NMA), hydrochloric anhydride (HET) ), phthalic anhydride (PA), or combinations thereof, but not limited to them;
- At least one accelerating agent may be a tertiary amine compound, more particularly from the group consisting of: N, N-dimethylbenzylamine, isophoronadiamine (IPDA), benzyl dimethylamine (BDMA) or combinations thereof, but not limited to Those;
- At least one release agent may be a fatty acid ester compound, more particularly from the group consisting of: Methyl fatty acid ester, Glycerine Monostearate, Glycerol esters or combinations thereof, but not limited thereto;
- At least one pigment may be a metal oxide-based compound, more
- the at least one hardening agent is tetrahydrophthalic anhydride (THPA); at least one accelerating agent is N, N-dimethylbenzylamine; at least one release agent is Glycerin Monostearate; and the at least one pigment is iron oxide and / or titanium oxide.
- THPA tetrahydrophthalic anhydride
- at least one accelerating agent is N, N-dimethylbenzylamine
- at least one release agent is Glycerin Monostearate
- the at least one pigment is iron oxide and / or titanium oxide.
- the resin-based formulation without the aggregate radiopacifier would comprise: from 24 to 66% resin, preferably crosslink resin such as, but not limited to BIS-GMA, epoxy, polyester, resin or combination between them; from 17.5% to 58.5% of at least one hardening agent; from 1.5% to 3.0% of at least one accelerating agent, from 0.5 to 3.0% of at least one release agent and from 5 to 23% of at least one pigment.
- crosslink resin such as, but not limited to BIS-GMA, epoxy, polyester, resin or combination between them
- at least one hardening agent from 1.5% to 3.0% of at least one accelerating agent, from 0.5 to 3.0% of at least one release agent and from 5 to 23% of at least one pigment.
- the resin-based formulation with the added radiopacifier would comprise: from 20 to 60% resin, preferably crosslink resin such as, but not limited to, BIS-GMA, epoxy, polyester, resin or a combination thereof; from 20.0% to 50.0% of at least one hardening agent; from 0.1% to 2.0% of at least one accelerating agent, 0.2 to 2.0% of at least one release agent, 10% to 30% of at least one radiopacifier and 5 to 20% of at least one pigment .
- the fibers are embedded in a resin or resin-based formulation, followed by a polymerization step to form a solid body.
- a resin or resin-based formulation which may be performed by a variety of techniques known in the prior art and incorporated herein by reference, for example, but not limiting to a person skilled in the art, by pultrusion, pressing, injection, compression, preferably pultrusion. or by pressing.
- the block or disc may be manufactured in various sizes and dimensions continuously and including, for example, but not limited to 98mm diameter discs ranging in thickness from 14 to 22mm, or 40x19x15mm rectangular blocks or any other shape, size or dimension which would be suitable for use with a CAD / CAM device or any other machining.
- dental materials particularly dental materials that need to be able to withstand large chewing efforts without fracturing, particularly of dental cores (pin and coronary), via technologies such as CAD / CAM or manually, including but not limited to machining, carving, cutting, grinding, engraving and abrasion.
- the TRINIA TM material comprises the randomly ordered and multidirectional fibers, which fibers are impregnated with resin in several layers.
- the prefabricated material of the present invention comprises unidirectionally ordered fibers and in a concentration ranging from 40% to 85%, preferably from 70% to 85%, more preferably from 78 to 82% of the composition of the final material.
- the prefabricated material was produced in the form of disc or block, with a formulation having 40% fiber. In these tests we expect density results of about 2.10 g / cm3, preferably higher than this value, with results of mechanical strength (flexural strength) and modulus of elasticity also improved compared to the state of the art. In the preferred embodiments used for testing, the prefabricated material was produced in the form of disc or block, with a formulation having 70% to 85% glass fiber in the final composition.
- the resin or resin-based formulation comprised about 11% to 29% of the final composition.
- the resin-based formulation may or may not add the radiopacifier.
- radiopacifier In the absence of radiopacified, it comprised: from 24 to 66% resin (i.e. crosslink type resin such as: BIS-GMA, epoxy, polyester, resin or combination thereof); from 17.5% to 58.5% hardening agent; from 1.5% to 3.0% accelerating agent, 0.5 to 3.0% release agent and 5 to 23% pigment. In this case, from 1% to 4% of radiopacifier, in relation to the final composition, was present in the fiber composition.
- resin i.e. crosslink type resin such as: BIS-GMA, epoxy, polyester, resin or combination thereof
- hardening agent from 1.5% to 3.0% accelerating agent, 0.5 to 3.0% release agent and 5 to 23% pigment.
- radiopacifier in relation to the final composition, was present in the fiber composition.
- the resin-based formulation, with the added radiopacifier comprised: from 20 to 60% resin (i.e. crosslink resin such as: BIS-GMA, epoxy, polyester, resin or a combination thereof) ); from 20.0% to 50.0% hardening agent; from 0.1% to 2.0% of accelerating agent, from 0.2 to 2.0% of release agent, from 10% to 30% of radiopacifier and from 5 to 20% of pigment.
- resin i.e. crosslink resin such as: BIS-GMA, epoxy, polyester, resin or a combination thereof
- hardening agent from 0.1% to 2.0% of accelerating agent, from 0.2 to 2.0% of release agent, from 10% to 30% of radiopacifier and from 5 to 20% of pigment.
- Table 2 shows the result of the Flexural Resistance tests; Flexural Elasticity and Density Module of one of the preferred embodiments of the disk or block prefabricated material of the present invention, compared to the available data of the disk and block TRINIA TM fiberglass.
- the prefabricated material of the present invention comprising up to 85% of undirectionally ordered fibers in longitudinal position, compared to TRINIA TM fiberglass discs and blocks, exhibits a high mechanical strength (flexural strength). ), which is 1100 Mpa in said material against 393 Mpa in TRINIA TM. Moreover, said material has a modulus of elasticity of 25 Gpa in the material refed against 18.8 Gpa in TRINIA TM. Elasticity is important as it gives dental materials, and particularly cores made from the prefabricated material of the present invention, the ability to absorb pressure from the chewing loads that the pin exerts directly on the tooth canal, thus minimizing the possibility of tooth fracture.
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- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dentistry (AREA)
- Plastic & Reconstructive Surgery (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dental Preparations (AREA)
Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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BR112019022372-0A BR112019022372B1 (pt) | 2017-04-27 | 2018-04-27 | Material pré-fabricado de fibra, seu uso para produção de materiais odontológicos, material odontológico e processo de obtenção |
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BRBR102017008932-0 | 2017-04-27 | ||
BR102017008932-0A BR102017008932A2 (pt) | 2017-04-27 | 2017-04-27 | material pré-fabricado de fibra, seu uso para produção de materiais odontológicos, material odontológico e processo de obtenção |
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WO2018195639A1 true WO2018195639A1 (pt) | 2018-11-01 |
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PCT/BR2018/050139 WO2018195639A1 (pt) | 2017-04-27 | 2018-04-27 | Material pré-fabricado de fibra, seu uso para produção de materiais odontológicos, material odontológico e processo de obtenção |
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BR (2) | BR102017008932A2 (pt) |
WO (1) | WO2018195639A1 (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020166667A1 (ja) | 2019-02-14 | 2020-08-20 | クラレノリタケデンタル株式会社 | 歯科用ミルブランク |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991007142A1 (fr) * | 1989-11-20 | 1991-05-30 | Marc Reynaud | Tenon d'ancrage dentaire physiologique en materiau composite et son procede de fabrication |
CN101803958A (zh) * | 2010-03-12 | 2010-08-18 | 北京欧亚瑞康新材料科技有限公司 | 齿科修复用一体化纤维桩及其制备方法 |
WO2017098096A1 (fr) * | 2015-12-10 | 2017-06-15 | Societe De Recherches Techniques Dentaires - Rtd | Disque usinable par cfao pour la fabrication d'inlay core fibres |
-
2017
- 2017-04-27 BR BR102017008932-0A patent/BR102017008932A2/pt not_active Application Discontinuation
-
2018
- 2018-04-27 BR BR112019022372-0A patent/BR112019022372B1/pt active IP Right Grant
- 2018-04-27 WO PCT/BR2018/050139 patent/WO2018195639A1/pt active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1991007142A1 (fr) * | 1989-11-20 | 1991-05-30 | Marc Reynaud | Tenon d'ancrage dentaire physiologique en materiau composite et son procede de fabrication |
CN101803958A (zh) * | 2010-03-12 | 2010-08-18 | 北京欧亚瑞康新材料科技有限公司 | 齿科修复用一体化纤维桩及其制备方法 |
WO2017098096A1 (fr) * | 2015-12-10 | 2017-06-15 | Societe De Recherches Techniques Dentaires - Rtd | Disque usinable par cfao pour la fabrication d'inlay core fibres |
Non-Patent Citations (2)
Title |
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"Postes DentinPost, pg 277", KOMET DENTAL, October 2014 (2014-10-01), XP055528420, Retrieved from the Internet <URL:https://www.kometdental.de/~/media/KometDental/Catalogue/SyncFolder/412106_pdf.pdf?3bdc40fe-c9cc-4938-950d-63b4c33e9e45> * |
FEUSER, L. ET AL.: "Pinos de Fibra - Escolha Corretamente", ARQUIVOS DE ODONTOLOGIA, vol. 41, no. 3, July 2005 (2005-07-01), pages 193 - 272, XP055528420, Retrieved from the Internet <URL:https://www.odonto.ufmg.br/revista/wp-content/uploads/sites/10/2016/06/AEO-v41-n3-arch7-2005.pdf> * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020166667A1 (ja) | 2019-02-14 | 2020-08-20 | クラレノリタケデンタル株式会社 | 歯科用ミルブランク |
JPWO2020166667A1 (ja) * | 2019-02-14 | 2021-12-09 | クラレノリタケデンタル株式会社 | 歯科用ミルブランク |
Also Published As
Publication number | Publication date |
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BR102017008932A2 (pt) | 2018-11-21 |
BR112019022372B1 (pt) | 2023-11-07 |
BR112019022372A2 (pt) | 2020-05-19 |
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