儿童2年中新增龋的相关因素的分析

Factors related to caries incrementa two-year following up in schoolchildren

目的 分析受试者 2年中新增龋的相关因素。方法 对 175名 12～ 14岁儿童 2年中新增龋与基线DMFS、口腔卫生行为、菌斑指数和牙菌斑中无机成分等指标进行纵向观察 ;并对其相关关系进行单因素及多因素分析。结果 基线检查时高龋组受试者两年中有新增龋的比例和新增DMFS显著高于低龋组和无龋组 ,多因素分析显示受试者既往患龋状况 (基线DMFS)是两年中新增龋的危险因素。同时 ,有新增龋者每日吃零食的次数显著多于无新增龋者。结论 在缺乏干预措施 ,口腔健康和卫生行为无明显改变的条件下 ,受试者的龋易感状态具有持续性。

Objective To analyze influence facts on caries increment in a two-year following up in schoolchildren. Methods Subjects were 175 of 12～14 years old schoolchildren.DMFS,plaque scores and oral health behavior were recorded in baseline,year 1 and year 2 examinations.Meanwhile dental plaque were collected and analyzed for Ca,P and F in baseline and year 1.Results By multiple regression and logistic regression past caries experience (DMFS in baseline) was significantly related to caries increment.By Student t-test frequency of snack consumption was more in subjects with new caries than subjects without new caries. Conclusion Without dental care, caries' susceptivity of subjects would continue if oral lealth behavior has not been changed.