PROBLEM TO BE SOLVED: To provide a cured product of a curable composition for dental use excellent in both of X-ray imaging property and transparency.SOLUTION: The curable composition for dental use comprises composite nano zirconia particles including nano zirconia particles having an average primary particle diameter of 1 nm to less than 20 nm and organosilane modifying the surfaces of the particles, dispersed in a resin.COPYRIGHT: (C)2009,JPO&INPIT【課題】X線像影性と透明性に共に優れた歯科用硬化性組成物の硬化体を得る。【解決手段】平均一次粒子径が1nm以上20nm未満の範囲にあるナノジルコニア粒子と、その表面を改質するオルガノシランとを有する複合ナノジルコニア粒子を、レジン中に分散させた歯科用硬化性組成物とする。【選択図】なし
