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Pub. No.:    WO/2009/133913    International Application No.:    PCT/JP2009/058417
Publication Date: 05.11.2009 International Filing Date: 28.04.2009
A61K 6/08 (2006.01)
Applicants: KURARAY MEDICAL INC. [JP/JP]; 1621, Sakazu, Kurashiki-shi, Okayama 7100801 (JP) (For All Designated States Except US).
JGC CATALYSTS AND CHEMICALS LTD. [JP/JP]; 580, Horikawa-cho, Saiwai-ku, Kawasaki-shi, Kanagawa 2120013 (JP) (For All Designated States Except US).
OKUBAYASHI Masaki [JP/JP]; (JP) (For US Only).
OKADA Koichi [JP/JP]; (JP) (For US Only).
TAKAHATA Yusuke [JP/JP]; (JP) (For US Only).
OHTSUKA Keisuke [JP/JP]; (JP) (For US Only)
Inventors: OKUBAYASHI Masaki; (JP).
OKADA Koichi; (JP).
TAKAHATA Yusuke; (JP).
OHTSUKA Keisuke; (JP)
Agent: KAMADA Koichi; (JP)
Priority Data:
2008-117803 28.04.2008 JP
(JA) 歯科用組成物及びコンポジットレジン
Abstract: front page image
(EN)Provided is a dental composition which has good operability as a paste and of which the cured form has excellent light-dispersing properties and transparency as well as excellent mechanical strength and polishing properties.  The dental composition contains (A) polymerizable monomer and (B) amorphous powder of mean particle size from 1 to 20 μm which includes fine silica-based particles and oxide containing zirconium atoms, silicon atoms and oxygen atoms coated on the surface of said fine silica-based particles.  The difference between the refractive indices of the cured form of said polymerizable monomer (A) and said amorphous powder (B) is from 0.005 to 0.03.
(FR)L’invention concerne une composition dentaire qui présente une bonne exploitabilité en tant que pâte et dont la forme durcie présente d’excellentes propriétés de dispersion de la lumière et de transparence, ainsi qu’une excellente résistance mécanique et d’excellentes propriétés de polissage. La composition dentaire contient (A) un monomère polymérisable et (B) une poudre amorphe d’une taille de particule moyenne de 1 à 20 µm, qui comprend de fines particules à base de silice et un oxyde contenant des atomes de zirconium, des atomes de silicium et des atomes d’oxygène enduit sur la surface desdites fines particules à base de silice. La différence entre les indices de réfraction de la forme durcie dudit monomère polymérisable (A) et de ladite poudre amorphe (B) est de 0,005 à 0,03.
(JA) 本発明は、硬化物の光拡散性と透明性とが共に優れつつ機械的強度及び研磨滑沢性にも優れ、かつペーストの操作性が良好な歯科用組成物を提供する。本発明は、重合性単量体(A)、並びにシリカ系微粒子と、該シリカ系微粒子の表面を被覆する、ジルコニウム原子、ケイ素原子及び酸素原子を含有する酸化物とを含む非晶質粉末であって、平均粒子径が1~20μmである非晶質粉末(B)を含む歯科用組成物であって、該重合性単量体(A)の硬化物の屈折率と該非晶質粉末(B)の屈折率との差が0.005~0.03である歯科用組成物である。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)