0977 Increased Prevalence of Dental Fluorosis after Twenty Years A. RICHARDS1, M. LARSEN1, L. MAARE2, and H. HEDEBOE2, 1Aarhus University, Faculty of Health Sciences, Denmark, 2Præstø School Dental Service, Denmark Objectives: To describe the prevalence and severity of dental fluorosis among all tooth types in children born and reared in an area with drinking water with (regularly monitored, naturally-occurring) fluoride concentrations of 1 ppm and compare with data recorded for a similar group of children examined in the same way and residing in the same area 20 years ago. Methods: Dental fluorosis was recorded in 2004. Teeth were isolated with cotton wool rolls and dried before scoring fluorosis using the system developed by Thylstrup and Fejerskov (1978) for all schoolchildren (n=74, age 12-15 yrs) living in the area. The results were compared with data recorded in the same way in 39 children, of similar ages, examined in the same area in 1984. Results: The prevalence and severity of fluorosis varied between tooth types so that the later in childhood the teeth are mineralized the higher the prevalence of dental fluorosis. When the data were compared to those collected 20 years previously, the prevalence of dental fluorosis in the first molars, incisors and canines (the early formed teeth) had increased significantly since 1984 (p<0.05., 0.01 and 0.001, Chi square test). There were no statistically significant differences in the prevalences of dental fluorosis between 1984 and 2004 in the (later formed) premolars and second molars. Conclusions: A significant increase in fluorosis prevalence has occurred over the last 20 years due to increased fluoride exposure of pre-school children. These findings may be explained by increased use of fluoride toothpaste by this age group from the seventees to the ninetees.
84th General Session and Exibition of Iadr, 2006
Main Research Area:
Increased Prevalence of Dental Fluorosis after Twenty Years, 2006