两种窝沟封闭术预防龋齿的疗效比较

摘要

目的：比较窝沟釉质成形封闭术(EST)与普通窝沟封闭术(CST)防治龋齿的临床疗效。方法：选择126例患儿的左下颌第一恒磨牙进行EST(EST 组)，右下颌第一恒磨牙进行 CST(CST 组)，封闭后1、2、3年复查，观察龋齿发生和封闭剂保留情况。结果：126例患者均获得3年以上随访。EST 组1、2、3年的龋病发生率分别为：0.7%、2.4%、4.0%；CST 组分别为：1.6%、4.0%、8.7%。EST 组1、2、3年的封闭剂保存率分别为：94.4%、91.3%、86.5%；，CST 组分别为：91.3%、81.7%、65.1%；两组2、3年龋病发病率及封闭剂保存率比较差异均有统计学意义(P<0.05)。结论：EST 在降低龋病的发病率及提高封闭剂的保存率方面均优于 CST，推荐在有条件的情况下，应尽可能采用 EST。%　　Objective:To compare the effect of enameloplasty sealant technique versus conventional sealant technique for caries prevention. Methods:126 cases of the first permanent molars in the mandibula were sealed by EST and CST.The preservation rate of the sealant was produced after a follow-up of 3 years.Results:126 patients for more than 3 years of follow-up.The incidence of caries EST group for 1,2,3 years were 0.7%,2.4%,4.0% respectively;the CST group caries incidence were 1.6%,4.0% and 8.7% respectively.The preservation rate of sealers EST group for 1,2,3 years were 94.4%,91.3%, 86.5% respectively;the preservation rate of sealers CST group were 91.3%,81.7%,65.1% respectively.The difference was statistically significant in 2,3 years for two groups(P<0.05).Conclusion:EST is superior in reducing the incidence of dental caries and improve the preservation rate of sealers CST,it should be used whenever possible in the case of conditional EST.