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1. (WO2019065777) DENTAL MILL BLANK AND METHOD FOR PRODUCING SAME
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Pub. No.: WO/2019/065777 International Application No.: PCT/JP2018/035790
Publication Date: 04.04.2019 International Filing Date: 26.09.2018
IPC:
A61C 13/087 (2006.01) ,A61C 5/77 (2017.01) ,A61C 8/00 (2006.01) ,A61C 13/00 (2006.01) ,A61C 13/01 (2006.01) ,A61C 13/083 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
13
Dental prostheses; Making same
08
Artificial teeth; Making same
087
Artificial resin teeth
[IPC code unknown for A61C 5/77]
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
8
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
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
13
Dental prostheses; Making same
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
13
Dental prostheses; Making same
007
Prostheses with bases, e.g. palates or plates; Making same
01
Bases
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
C
DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
13
Dental prostheses; Making same
08
Artificial teeth; Making same
083
Porcelain or ceramic teeth
Applicants:
クラレノリタケデンタル株式会社 KURARAY NORITAKE DENTAL INC. [JP/JP]; 岡山県倉敷市酒津1621番地 1621, Sakazu, Kurashiki-shi, Okayama 7100801, JP
Inventors:
井上 将史 INOUE Masashi; JP
池田 誠 IKEDA Makoto; JP
石野 博重 ISHINO Hiroshige; JP
Agent:
鎌田 耕一 KAMADA Koichi; JP
田村 康晃 TAMURA Yasuaki; JP
Priority Data:
2017-18542126.09.2017JP
2017-23550207.12.2017JP
Title (EN) DENTAL MILL BLANK AND METHOD FOR PRODUCING SAME
(FR) CARTON MULTIJET POUR DENTISTERIE, ET PROCÉDÉ DE FABRICATION DE CELUI-CI
(JA) 歯科用ミルブランクおよびその製造方法
Abstract:
(EN) The present invention provides a dental mill blank which is suppressed in the occurrence of cracks, while having excellent mechanical strength and aesthetic properties. The present invention relates to a dental mill blank which contains an inorganic filler and a polymer, and which has a porosity of 25 to 35% by volume after two-hour ashing at 600°C. With respect to this dental mill blank, the inorganic filler contains an inorganic filler (A) and an inorganic filler (B); and if a (μm) is the average primary particle diameter of the inorganic filler (A) and b (μm) is the average primary particle diameter of the inorganic filler (B), it is preferable that a and b satisfy formulae (I) and (II) below. It is also preferable that (content of inorganic filler (A) (volume))/(content of inorganic filler (B) (volume)) is from 5/95 to 50/50. (I): 0.12 ≤ a ≤ 0.70 (II): 3 ≤ b/a
(FR) L'invention fournit un carton multijet pour dentisterie qui présente peu de risques d'apparition de fissures, et qui se révèle excellent en termes de résistance mécanique et de propriétés esthétiques. Plus précisément, l'invention concerne un carton multijet pour dentisterie qui contient un matériau de charge inorganique et un polymère, et qui présente une porosité après incinération pendant deux heures à 600°C comprise entre 25 et 35% en volume. De préférence, ce carton multijet pour dentisterie est tel que le matériau de charge inorganique contient un matériau de charge inorganique (A) et un matériau de charge inorganique (B), les formules (I) et (II) étant satisfaites lorsque le diamètre moyen de particules primaires du matériau de charge inorganique (A) est représenté par aμm, et le diamètre moyen de particules primaires du matériau de charge inorganique (B) est représenté par bμm. En outre, de préférence, le rapport teneur en matériau de charge inorganique (A) / teneur en matériau de charge inorganique (B) (volume/volume), est compris entre 5/95 et 50/50. 0,12 ≦ a ≦ 0,70 (I) 3 ≦ b/a (II)
(JA) 本発明は、クラックの発生が少なく、機械的強度および審美性に優れる歯科用ミルブランクを提供する。本発明は、無機充填材および重合体を含み、600℃で2時間灰化した後の空隙率が25~35体積%である、歯科用ミルブランクに関する。当該歯科用ミルブランクにおいては、無機充填材が無機充填材(A)および無機充填材(B)を含み、無機充填材(A)の平均一次粒子径をaμm、無機充填材(B)の平均一次粒子径をbμmとしたときに、以下の式(I)および(II)を満たすことが好ましく、無機充填材(A)の含有量/無機充填材(B)の含有量(体積/体積)が5/95~50/50であることが好ましい。 0.12 ≦ a ≦ 0.70 (I) 3 ≦ b/a (II)
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)