Protective effect of three different fluoride pretreatments on artificially induced dental erosion in primary and permanent teeth

Objective: To assess the effect of acidulated phosphate fluoride gel (APF), sodium fluoride varnish (NaF) and casein phosphopeptide-amorphous calcium phosphate fluoride paste (CPP-ACPF) on the dental erosion produced by coca cola in primary and permanent teeth. Design: Sixty extracted human primary molars (n = 30) and young permanent premolars (n = 30) were used in this study. The coronal portion of each tooth was sectioned mesio-distally. Specimens were prepared by embedding the crown sections in acrylic resin blocks leaving the enamel surfaces exposed. Specimens were ground, polished and randomly assigned to one of three groups each of 10 according to the protective agent used: APF gel (1.23% F), NaF varnish (0.1%F), and CPP-ACPF paste (0.2%F). Half of the exposed enamel surface was protected with adhesive tape during the treatment of the remaining surface according to their group. Six daily demineralization–remineralization cycles of 5 minutes of immersion in a cola drink (pH 2.3) and 30 minutes in artificial saliva were conducted for 14 days. Surface Vickers Micro-hardness readings were recorded at baseline and 14 days later for both halves. Percentage surface microhardness reduction (%SMHR) was then calculated. Data were analyzed using ANOVA and Duncan’s post-hoc test ( p < 0.05). Results: All of the tested fluoride treatments were able to reduce erosive enamel loss in both primary and permanent groups. In primary teeth only APF gel showed significantly higher anti-erosive effect than both fluoride varnish and CPPACPF paste. In permanent teeth both CPP-ACPF paste and APF gel showed significantly higher protective antierosive effect than fluoride varnish. Conclusions: under the conditions of this study, all of the tested fluoride treatments were able to reduce erosive enamel loss in both primary and permanent teeth. Primary and permanent enamel substrates reacted differently to different fluoridated compounds. CPP-ACPF paste is a promising remineralizing material. [Sherine B Y Badr 1 , Mohamed A Ibrahim. Protective effect of three different fluoride pretreatments on artificially induced dental erosion in primary and permanent teeth. Journal of American Science 2010;6(11):442-451]. (ISSN: 1545-1003).