Effect of Different Fluoride Dentifrices on Enamel Microhardness and Fluoride Uptake of Deciduous Teeth (In Vitro Study

Abstract

Dental caries remains the most common preventable chronic oral disease. The protective and tooth resisting modalities against dental caries include fluoride ions incorporation into the developing hydroxyappatite crystals and the incipient caries. Fluoride incorporation into the crystalline lattice of the dental hard tissues makes it less soluble in acidic environment. This can be achieved through daily tooth brushing with fluoride tooth pastes. The fluoride bioavailability has a very important effect in caries prevention, it depends on the solubility of fluoride containing compounds, which leads to the adhesion of the fluoride compound to the tooth surface. Fluoride reactivity is characterized by fluoride uptake, surface micro-hardness and lesion mineral content. Accordingly, pH cycling models were developed to evaluate carious lesions and mineral changes in dental hard tissues.