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目的调查某高校附小二三年级学生第1恒磨牙患龋和萌出情况,为儿童龋病防治保健工作提供依据。方法对2所高校附小共252名二三年级学生的第1恒磨牙进行流行病学调查。结果 252名受检学生,二年级132名,三年级120名,总患龋率11.90%,男、女生患龋率分别为9.22%和15.32%(χ2=2.200,P>0.05)。二、三年级患龋率分别为7.58%和16.67%(χ2=4.953,P<0.05)。二、三年级第1恒磨牙萌出率分别为69.51%和87.92%,二年级男、女生萌出率分别为67.81%和71.61%;三年级男、女生萌出率分别为87.13%和88.94%。结论高校附小二三年级学生第1恒磨牙患龋率相对较低,但三年级学生患龋率明显比二年级学生高,应进一步加强对学生和家长的龋病宣教工作。
Objective To investigate the prevalence of caries and eruption of the first permanent molars in the second and third graders attached to a university and to provide evidence for the prevention and treatment of caries in children. Methods The first molars of 252 sophomores in two universities were investigated by epidemiological survey. Results There were 252 subjects, 132 in second grade and 120 in third grade. The total caries prevalence was 11.90%. The prevalence of caries was 9.22% and 15.32% for boys and girls respectively (χ2 = 2.200, P> 0.05). The prevalence of dental caries in grades two and three was 7.58% and 16.67%, respectively (χ2 = 4.953, P <0.05). The first and second molars eruption rates were 69.51% and 87.92%, respectively. The second and third year boys and girls were 67.81% and 71.61% respectively. The third and third years boys and girls were 87.13% and 88.94% respectively. Conclusions The prevalence of dental caries in the first molar of second and third graders is relatively low, but the prevalence of dental caries in third graders is significantly higher than that of second graders. The dental caries training for students and parents should be further strengthened.