窝沟封闭防龋二年临床效果观察

CLINICAL EFFECT OF PIT AND FISSURE SEALANT IN PREVENTION OF CARIES A TWO-YEAR-FOLLOW-UP STUDY

本文介绍窝沟封闭防龋效果、封闭剂保留率和窝沟封闭剂的成本－效果分析。以Ｓ小学１５１名６岁儿童为实验组，进行双侧下颌六龄牙窝沟封闭，Ｗ小学１４８名６岁学生不作窝沟封闭为对照组，每年检查一次。观察结果，实验组学生的患龋率和龋均与对照组比较１年后分别减少了４８．８４％和４５．８３％；２年后减少了５７．９３％和５１．６２％，均有显著差异。封闭剂保留率１年后为９０．０７％，２年后为８１．２１％，质量符合全国牙病防治指导组的质控标准。由于窝沟封闭是一项新技术，应由口腔专业人员进行操作。窝沟封闭预防儿童恒牙龋有肯定疗效，值得推广。

This paper reports the effect, retention rate and cost-effectiveness of pit and fissure sealant in the prevention of caries. 151 six-year-old pupils from one primary school were taken as an experimental group, with their six-year-teeth in bilateral lower jaws sealed. And 146 pupils of the same age from another primary school constituted the control group, for whom no sealing was done. Annual examination for two years revealed an incidence of caries and mean number of caries decreased by 48.8%and 45.8%respectively, and went further down by 57.9%and 51.0%two years later. There was a clear difference. The 1 and 2 year sealant retention yielded a percentage of 90.1%and 81.2%. The effective value came up to the standards by the National Committee Oral Health.The authors suggest that as a new technique, pit and fissure sealant should be carried out by professional dentists. Owing to its definite effect in the prevention of permanent caries in children, it deserves wide application.