Measurement of fluorine distribution in carious enamel around 1.5-year aged fluoride-containing materials

1.5年経過したフッ素含有材料周辺の腐食したエナメル中のフッ素分布の測定

小松 久憲*; 小島 健太郎*; 船戸 良基*; 松田 康裕*; 木地村 太基*; 奥山 克史*; 山本 洋子*; 岩見 行晃*; 恵比須 繁之*; 能町 正治*; 安田 啓介*; 佐藤 隆博; 江夏 昌志

Komatsu, Hisanori*; Kojima, Kentaro*; Funato, Yoshiki*; Matsuda, Yasuhiro*; Kijimura, Taiki*; Okuyama, Katsushi*; Yamamoto, Hiroko*; Iwami, Yukiteru*; Ebisu, Shigeyuki*; Nomachi, Masaharu*; Yasuda, Keisuke*; Sato, Takahiro; Koka, Masashi

The fluoride contained in some restorative material was demonstrated as a great benefit source for preventing dental caries. However, long-term caries preventive effect of fluoride- containing materials (FCMs) is still a matter of debate, since the amount of fluoride released from FCM decreases with time. The purpose of this study was to measure the fluorine (F) distribution in carious enamel around aged FCMs using an in-air micro-PIGE/PIXE system at TIARA. As a result, no difference in F uptake among the materials in 1.5-year storage indicated that there was no difference in long-term caries preventive effect among the materials used in the present study. Short-term caries preventive effect of FCM could not predict the existence of long-term effect.