含氟封闭剂三年临床防龋效果观察

The observation of the contained fluoride sealant on caries prevention for 3 years

该研究主要观察含氟封闭剂的临床防龋效果，并将它同其它几种防龋方法进行比较。作者将上海市786名6～8岁儿童分成四组，分别作四种处理。它们是：含氟封闭剂、普通封闭剂、APFI凝胶、普通封闭剂加APFI凝胶。封闭剂在研究开始时使用于第一恒磨牙，APFI凝胶每半年使用一次。3年后观察这四种防龋方法对儿童牙齿的保护作用，结果显示；含氟封闭剂对受封闭牙面的防龋效果较普通封闭剂和APFI凝胶为高；对口腔中未封闭牙齿的保护作用也较普通封闭剂和APFI凝胶强；不同防龋措施对女学生的保护作用不如男学生。以上结果提示含氟封闭剂具有氟化物和封闭剂的双重作用，并能对周围未封闭牙齿起保护作用。

Pit and fissure sealant is an effective method for preventing pit and fissurecaries, though it has less effect in smooth surface teeth. But the contained fluoride sealant is ef-fective on caries prevention both in pit and fissure area and in smooth surface. The aim of thepresent research was observeing the clinic results of the contained fluoride sealant on cariesprevention. 786 children aged 6~8 years old were divided into four groups. The first perma-nent molars in group 1 were sealed by the contained fluoride sealant and those in group 2 wereused the conventional sealant. The same molars in group 3 were used the conventional sealantplus the APFI gel and those in group 4 were only used the APFI gel. APFI gel was used onetime per half year. The results showed the caries preventive effect of the contained fluoridesealant was significant higher than the conventional sealant or the APFI gel in first molarswhich had been sealed for three years. The caries incidence of the unsealed teeth in group 1was lower than that in the other groups. The results also indicated the caries preventive effectof all above methods was less in female than in male.