PROBLEM TO BE SOLVED: To provide a bleaching material which has good long shelf stability and is easily applied to a discolored tooth in practical use and further imparts enough bleaching effect without decreasing initial photocatalytic activity and has good safety for a human body.SOLUTION: The bleaching material comprises two liquids, an aqueous mixed liquid of titanium dioxide which generates photocatalytic action by an inorganic thickener and with light irradiation, and a mixed liquid of a compound generating hydrogen peroxide in a water solution with a phosphoric aid and a condensed phosphoric salt.COPYRIGHT: (C)2002,JPO【課題】 長期の保存安定性が良好で、実際の使用に際し変色歯牙への塗布が容易であり、且つ本来の光触媒活性を低下させずに十分な漂白効果が得られ、更に安全性にも優れた漂白材を提供する。【解決手段】 無機増粘剤と光照射により光触媒作用を生じる二酸化チタンの水系混合液と水溶液中で過酸化水素を発生する化合物とリン酸および縮合リン酸塩の混合水溶液の2液からなることを特徴とする歯牙漂白材である。
