Investigation on Prevalence and Influencing Factors of Dental Fluorosis in School-age Children in Countryside with High Level of Fluoride in Drinking water in Ji'ning / 环境与健康杂志

ABSTRACT

Objective To explore the risk factors for school age chidren dental fluorosis in high fluoride rural areas.Methods Based on the fluoride screening results of rural drinking water in Shandong in 2006,three villages of Jiaxiang counties were selected as the survey sites,12 drinking water samples were collected and pH value,fluoride,hardness were determined,110 school-age children were chosen among high fluoride countryside in May,2008.Dental fluorosis was examined,and a questionnaire survey was performed.Results The average levels of pH value,fluoride content and hardness were 7.01,1.24,494.00 mg/L respectively,and the of dental fluorosis was 63.6%.Simple Logistic regression analysis showed that the prevalence of dental fluorosis was associated with Lower family income,lower education level of parents,lower nutrition knowledge score and few kinds of daily food.Multiple Logistic regression analysis showed that the prevalence of dental fluorosis was positively associated with family income,education level of father and consumption of meat,milk,eggs,fresh vegetables and fruit.Conclusion The rate of dental fluorosis among school-age children in the investigated area is higher.Family income,parents'education and nutritional deficiency are related to the prevalence of dental fluorosis.