Prevalence of dental fluorosis among 12 to 15 years - old students

fluoride is used as an anticaries agent in dentistry and Dental fluorosis is one of the side effects of chronic exposure to fluoride. The aim of this study was to determine prevalence of dental fluorosis among 12 to 15 years – old students in Mahmood Abad city. In this cross sectional study 504 Students of 12-15 years in the city of Mahmud abad of ghazvin form were sampled randomly. Inspection of teeth was done in the form of direct observation and regarding to WHO recommendation, Dean index was used for classification fluorosis severity in our study.In order to accessing the data,variance and regression analysis also t & x2 tests have been used. 464 (92.1 percent) students of 504 students had dental fluorosis (246 girls and 218 boys). In this study: there was no significant relationship between fluorosis prevalence and gender(P=0.202), but there was significant relationship with age (P = 0.005). The prevalence of fluorosis varied in different teeth, so that the prevalence of fluorosis in Second molars, premolars and canines was higher than first molars, central and lateral tha was statistically significant.(p value=0.005) Regard to the results of this study,It is recommended that dentists dont use therapeutic fluoride in their treatment plan, because it can be contributed to increasing fluorosis severity in this region.