PROBLEM TO BE SOLVED: To obtain a polymerization-curable composition for dental uses, excellent in plugging operability of the uncured paste thereof, excellent in the surface lubricity and abrasion resistance of the cured products thereof and capable of becoming a composite repair material for dental uses, having high transparency and so easily adjustable to almost colorless hue.SOLUTION: This curable composition for dental uses is obtained by including a monomer composition comprising an organic/inorganic complex filler and a polymerizable monomer, wherein a fluorescent whitening agent such as 2,5- thiophen-diyl(5-tert-butyl-1,3-benzoxazole) is added to the organic/inorganic complex filler.COPYRIGHT: (C)2002,JPO【課題】 硬化前ペーストの充填操作性、硬化体の表面滑沢性、耐磨耗性に優れ、透明性が高く無色に近い色調を容易に調整できる歯科用複合修復材となり得る歯科用重合硬化性組成物を提供する。【解決手段】 有機無機複合フィラー及び重合性単量体を含むモノマー組成物を含有してなる歯科用硬化性組成物において、有機無機複合フィラー中に2,5-チオフェンジイル(5-tert-ブチル-1,3-ベンゾキサゾール)等の蛍光増白剤を添加する。