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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*; et al.
JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 85, 2012/01
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.
-PIGE/PIXE system小松 久憲*; 山本 洋子*; 松田 康裕*; 木地村 太基*; 衣川 道彦*; 奥山 克史*; 能町 正治*; 安田 啓介*; 佐藤 隆博; 及川 将一*
Nuclear Instruments and Methods in Physics Research B, 269(20), p.2274 - 2277, 2011/10
被引用回数：18 パーセンタイル：78.71(Instruments & Instrumentation)The purpose of this study was to determine F uptake into enamel around FCMs under different pH-cycling using the in-air -PIGE/PIXE system at TIARA. After pH-cycling, the caries progression in all materials was analyzed using transverse microradiography (TMR). The F and calcium distributions of the lesion in each specimen of FCMs were evaluated using PIGE/PIXE system. The amount of F in the outer 150 m of the lesion was then calculated for comparing F uptake. As a result, there was a difference in the caries progression between materials. In clinical setting, it is important to select FCM according to the caries risk. From F analysis, there was no significant difference in the F uptake from each material between the solutions, though there was significant difference between the materials.
