中原镇中学生龋齿患病情况及其病因调查

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。

A SURVEY OF THE PREVALENCE AND ETIOLGY OF CARIES IN HIGH SCHOOL STUDENTS AT ZHONGYUAN TOWNSHIP

The prevalence and etiology of dental caries were surveyed in 652 students aged from 13 to 19 at the Overseas Chinese High Schcol at Zhongyuan township.The incidence was 66.26% with 1.53 teeth for each of the students examined and 2.31 teeth per student inflicted with caries on the average.The incidence rate in girls was evidently higher than that in boys. The caries of the six-year molar were 74.70% of the total and caries in the permanent teeth were liable to occur on both sides of the mandibula. Analysis of the etiology revealed that the prevalence of caries was closely related to the ways arid times of toothbrushing,habits of eating refreshments,exercising,and family history of caries.It is thus advised that brushing the teeth both in the morning and before going to bed,eating no refreshments before bedtime,and regular exercising would all help prevent caries.