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本文对中原镇华侨中学６５２名１３～１９岁中学生龋齿患病情况及病因进行调查分析，结果是患龋率为６６．２６％，受检者龋均１．５３．患者龋均２．３１。女生患龋率显著高于男生。恒龋好发部位为下颌两侧，其中六龄牙龋齿占龋牙总数的７４．７０％。龋齿的患病因素分析发现，龋齿患病率与刷牙方式和次数，睡前吃零食习惯，锻练身体情况，家庭成员患龋情况有密切的关系。据此提出要提倡早晚刷牙，睡前不吃零食和经常参加体育锻炼等，以提高防龋能力。
In this paper, 652 middle school students in Zhongyuan Town, aged from 13 to 19, were investigated for caries status and etiology. The results showed that the prevalence of caries was 66.26% and caries were 1.53. Patients caries were 2.31. The caries prevalence of girls was significantly higher than that of boys. Constant caries spot prone to jaw on both sides, of which six dental caries accounted for 74.70% of the total number of dental caries. The prevalence of dental caries analysis found that the prevalence of dental caries and brushing the way and frequency, eating habits before going to bed, exercise the physical condition, family members suffering from caries are closely related. Accordingly proposed to promote morning and evening brushing, not eating snacks before going to bed and often participate in physical exercise, etc., in order to improve the ability of anti-caries.