作者为了阐明用Duraphat和新型的氟化物涂料(CDB)后其牙釉质和根部牙本质氟化物摄入情况,对离体牙进行研究。研究材料为离体尖牙,颊舌向纵切后治疗组、对照组各一半。治疗组标本浸于人工唾液,对照组浸于生理盐水。标本首先去除牙骨质以暴露根部牙本质,用乙醇干燥,再用毛刷处理氟化物涂料10秒钟 In order to elucidate the intake of dentin fluoride in enamel and root after Duraphat and a novel fluorinated coating (CDB), the authors studied the isolated teeth. The study materials were isolated fangs, and the treatment group and the control group were half in each group. The treatment group was immersed in artificial saliva, while the control group was immersed in saline. Specimens were first removed cementum to expose the root dentin, dried with ethanol, and then treated with a brush fluoride paint for 10 seconds