Christian Bradley, Evans R Wendell
Community Oral Health and Epidemiology, Faculty of Dentistry, University of Sydney, Sydney, NSW 2145, Australia.
Int J Paediatr Dent. 2009 Sep;19(5):330-7. doi: 10.1111/j.1365-263X.2009.00979.x. Epub 2009 Apr 7.
The objectives of this study were to: (i) test the hypothesis that urbanization is a risk factor for dental caries in children aged 6 and 12 years in Kollam, Kerala; and (ii) identify other possible risk factors for dental caries.
A cross-sectional study design was followed. The subjects were stratified by socio-demographic status into urban middle class, urban poor, and rural poor. Caries experience was measured by visual examination of teeth according to the World Health Organization criteria. Data on potential risk factors were collected using a close-ended, structured, and interviewer-administered questionnaire. Data modelling was conducted using logistic regression analyses.
Eight hundred seventy-six children were examined; 53% of 6-year-olds and 90% of 12-year-olds examined were caries free. The caries experience rates were 1.40 decayed, missing, or filled primary teeth and 0.15 Decayed, Missing, and Filled Teeth (DMFT) for the 6- and 12-year-olds, respectively. Urban children did not have a higher caries experience compared with rural children. The only risk factor associated with a significant difference in DMFT scores was the dental visiting pattern. Children who visited the dentist had a significantly higher mean DMFT score (P = 0.009).
There was no evidence that urbanization is a risk factor for dental caries in Kerala. Dental caries experience was low, against any standard, in Kollam. Risk factors for caries were not identified.
本研究的目的是：（i）检验城市化是喀拉拉邦科拉姆6岁和12岁儿童龋齿危险因素这一假设；（ii）确定其他可能的龋齿危险因素。
采用横断面研究设计。根据社会人口统计学状况将受试者分为城市中产阶级、城市贫困阶层和农村贫困阶层。根据世界卫生组织标准通过目视检查牙齿来测量龋齿经历。使用封闭式、结构化且由访谈者管理的问卷收集潜在危险因素的数据。使用逻辑回归分析进行数据建模。
检查了876名儿童；6岁儿童中有53%、12岁儿童中有90%无龋齿。6岁和12岁儿童的龋齿经历率分别为1.40颗乳牙龋、失、补牙和0.15颗恒牙龋、失、补牙（DMFT）。与农村儿童相比城市儿童没有更高的龋齿经历。与DMFT评分有显著差异相关的唯一危险因素是看牙模式。看牙医的儿童平均DMFT评分显著更高（P = 0.009）。
没有证据表明城市化是喀拉拉邦龋齿的危险因素。按照任何标准，科拉姆的龋齿经历率都很低。未确定龋齿的危险因素。
