In vitro evaluation of surface free energy of dentin after treatment with sodium trimetaphosphate associated or not with fluoride, exposed or not to calcium

It has been stated that sodium trimetaphosphate (TMP) promotes a more anionic dentin surface inducing greater calcium and phosphate precipitation. The aim of the present study was to evaluate in vitro the surface free energy ( γs) of dentin after treatment with TMP associated or not with fluoride (F), exposed or not to calcium (Ca), as well as the adsorption of TMP, F, and Ca by dentin. Bovine dentin blocks (n=12 blocks/group) were treated with solutions containing TMP at 0%, 1%, 3% or 9% (w/v) followed or not by the app lication of Ca. These solutions were or were not associated to 1100 ppm F. F, Ca, and TMP were determined in the solutions before and after the treatment to calculate the adsorption by dentin. To analyze the γs of dentin, the apolar (γsLW) and polar (γsAB) components were determined by contact an gle measurement. Data were submitted to two-way ANOVA followed by the Student-Newman-Keuls test (p
Source: Caries Research - Category: Dentistry Source Type: research