Relationship between Fluoride Concentration of Primary Tooth Enamel and Dental Caries

Purpose To compare the difference of fluoride concentrations of surface enamel between caries susceptive teeth and caries inactive teeth. Methods Extracted primary lower central incisors from Shanghai, Beijing and Shenzhen, with clinical data were collected. Using acid etched microsampling technique fluoride distributions in the surface enamel were analyzed. Calcium was also determined. Results There was a decrease in the F concentrations from the enamel surface to the inner part. It was failed to demonstrate an association between enamel fluoride concentration and dental caries. Conclusions No linear correlation was found between enamel fluoride concentration and dental caries.