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目的 了解学龄儿童第一恒磨牙患龋情况 ,为提高口腔健康水平 ,制定实施积极有效的预防和治疗措施提供指导和依据。方法 对 173 1名 7～ 12岁小学生的第一恒磨牙龋坏情况进行调查 ,所得数据进行统计分析。结果 173 1例样本第一恒磨牙平均患龋率为 3 2 64 %。龋均 0 48。女性第一恒磨牙患龋率为 3 7 85 % ,龋均为 0 5 5均高于男性 ,7岁组患龋率和龋均均低于其它年龄组 ,第一恒磨牙的龋损以牙合面窝沟点隙龋最多见 ,龋损率为 73 5 2 %。结论 第一恒磨牙患龋情况不容忽视 ,且好发于窝沟点隙。因此 ,适时进行窝沟封闭是预防第一恒磨牙患龋的有效措施
Objective To understand the prevalence of dental caries in the first permanent molars of school-age children and to provide guidance and evidence for the development of effective and effective preventive and curative measures in order to improve the oral health. Methods 173 cases of dental caries of primary molars aged from 7 to 12 years were surveyed, and the data were statistically analyzed. Results 173 The average caries prevalence of the first permanent molars in 1 case was 3264%. Caries were 0 48. The prevalence of dental caries in the first permanent molars was 37.7%, while that in the caries was 0.55, both were higher than those in the male. The caries prevalence and caries in the 7-year-old group were lower than those in other age groups. The most common caries pit fissure caries, caries loss rate of 73 5 2%. Conclusion The first permanent molar tooth caries can not be ignored, and occur in the pit gap. Therefore, the timely pit and fissure sealant is to prevent the first permanent molar caries effective measures