Comparative Evaluation of Longevity of Fluoride Release From three Different Fluoride Varnishes - An Invitro Study.

Abstract

Fluoride varnishes play a pivotal role in inhibition of dental caries by increasing remineralization. To determine the longevity of fluoride release from 3 different fluoride varnishes over a period of time through salivary fluoride estimation. Twenty four extracted human deciduous anterior teeth were divided into four groups, i.e., ClinproTM XT, Flouritop SR, Flourprotector and Control group. Fluoride varnishes were applied on 3mm x 3mm window on labial surface of the teeth and then the teeth were immersed and stored in artificial saliva. The concentration of fluoride in ppm was measured after 1 week, 1 month, 3 months and 6 months. Fluoride release at each time interval for different groups was statistically analyzed using ANOVA and Post Hoc Tukey's test. Although all the fluoride varnishes released fluoride, with greatest release observed during 1(st) week by Fluoritop SR (66.92±16.30ppm), ClinproTM XT Varnish released consistently and substantially more fluoride than Fluoritop SR and Fluorprotector during 6 months analysis (p<0.05). Fluorprotector showed the lowest rate of F release among all the groups compared. Over a period of 6 months ClinproTM XT Varnish released consistently and substantially more fluoride than other tested products.