广州市白云区6～10岁儿童第一恒磨牙萌出及患龋情况调查

Investigation of tooth eruption and caries status of the first permanent molar in 6-10 year-old children in Baiyun District of Guangzhou City

目的:对广州市白云区6～10岁儿童第一恒磨牙萌出情况、患龋率及龋病的病因进行调查分析。方法:参照第三次全国口腔健康流行病学抽样调查方案随机抽取白云区8所小学共1 048名6～10岁在校学生,对其第一恒磨牙进行龋病流行病学调查。结果:1 048名学生的第一恒磨牙萌出率为86.6%,总患龋率为16.1%,均随着年龄的增长而增长;下颌第一恒磨牙为龋病的好发牙位,患龋率占总数的78.9%。结论:广州市白云区6～10岁儿童第一恒磨牙早期患龋情况严重,需要当地政府和医疗机构投入更多早期预防措施,并建议8岁是本地区开展集体窝沟封闭的较佳年龄。

AIM ： To investigate tooth eruption and caries status of first permanent molar in 6 - 10 years old children in Baiyun District of Guangzhou city. METHODS ： According to the sampling method of the Third National Epidemiological Survey of oral health status, 1048 students from 8 primary schools, aged 6 to 10 years old in Baiyun District Guangzhou city were randomly selected. The first permanent molars were examined. RESULTS： The eruption rate of the first permanent molars was 86.6%. The caries incidence was 16.1%, 78.9% of the carious first permanent molars were on mandibula. Caries incidence and eruption rate both increased with age. CONCLUSION： Caries inci- dence of first permanent molar in 6 - 10 years old children in Baiyun District Guangzhou city is high, more early pre- vention measures should be taken. 8 -year is the appropriate age for pit and fissure sealing.