Study on the effect of drinking tap water with to prevent children’s dental fluorosis and its influence factors in moderate fluorosis prevalent regions

• 1、Public Health School, Southeast University
• 2、Jiangsu Province Center for Disease Prevention and Control

Abstract：Objective To find out the effect of drinking tap water with low fluoride to prevent children’s dental fluorosis and its influence factors in moderate fluorosis prevalent regions. Methods The children from 4 villages selected were diagnosed for dental fluorosis with Dean′s method and their families were investigated with questionnaire. Results In the village water-improved for 4 years , no effect of dental fluorosis prevention was found in the children who had drunk tap water. In the two villages water-improved for no less than 8 years, the prevalence and severity of dental fluorosis in the children scholars who had drunk tap water significantly decreased and met the control standard. There was no significant difference in the effect of dental fluorosis prevention between the later two groups of children. The economic state of children’s families, the beginning and the length of the period in which children drank tap water were entered in the logistic regression equation. Conclusions In moderate flurosis prevalent regions and in the villages water-improved for no less than 8 years, the effect of dental fluorosis prevention was significant and the prevalence can meet the control standard in the children who had drunk tap water. The economic state of children’s families, the beginning and the length of the period in which children drank tap water were important influence factors on the effect of dental fluorosis prevention.

Keywords： Tap water Dental fluorosis Community fluorosis index Influence factor logistic regression