广东连南瑶族成人龋病流行病学调查

An epidemiological survey on prevalence of caries among adults of Yao in Liannan in Guangdong

目的调查广东连南瑶族成人（35～44岁年龄组）龋病流行情况，为连南瑶族地区开展龋病防治措施提供依据。方法采用多阶段分层等容量随机抽样的方法，抽取连南县城和各乡镇年龄在35～44岁之间的瑶族人720名，进行龋病流行病学调查。结果连南瑶族成人患龋率为58.33％，乡镇明显高于县城（c2=7.406，P=0.006）；龋均为5.63±4.92，乡镇明显高于县城（u=2.704，P=0.007）；龋齿充填率为7.20％，县城明显高于乡镇（c2=33.962，P＜0.001）；平均失牙数为3.04，乡镇明显高于县城（u=5.000，P＜0.001）。结论连南瑶族成人龋病的流行病学情况城乡差异显著，且龋齿充填率较低，平均失牙数较高。

Objective To explore the prevalence of caries among 35?44 years old adults of Yao in Liannan, North?west of Guangdong, in order to provide basis for the caries prevention. Methods 720 Yao individuals ranged from 35to 44 years old living in Liannan country and township were selected by multistage stratified random sampling. Andthen, a cross?sectional survey of caries was carried out. Results The prevalence of caries among Yao adults of Liannanwas 58.33%. The prevalence of people living in township was higher than those in country (c2 = 7.406, P=0.006). DFT(decay and filled tooth) was 5.63 ± 4.92. DFT of people living in township was higher than those in country (u = 2.704,P = 0.007). The filling rate of caries was 7.20%. The filling rate of people living in country was higher than those intownship (c2 = 33.962, P<0.001). The average number of missing teeth was 3.04. The people living in township hadmore missing teeth than those in country (u=5.000, P<0.001). Conclusion There were significant differences be?tween people living in township and country of Yao residents in Liannan, in caries prevalence, filling rate and missingteeth aspects. The filling rate of caries was low and the average number of missing teeth was high. Therefore, the preven?tion of dental caries should be focused on the people in township. The stomatological human resources should be allocat?ed reasonably. We must intensify the promotion of necessity of caries treatment and carry out treatment of dental caries,in order to increase the filling rate of caries and decrease the number of missing teeth in township of Yao individuals in Liannan, which can improve their living qualities.