Avaliação do efeito preventivo de materiais remineralizadores em lesões de erosão dentária pela técnica Speckle: uma análise in vitro

Abstract

Evidence shows that the presence of erosion is growing steadily, which makes it important to diagnose early tooth wear in both children and adults so that adequate preventive measures are taken. Knowing the preventive power of oral hygiene products used in daily life and of dental materials used in clinical practice is important so that the best results are achieved. Therefore, the objective of this work was to evaluate the preventive effect of some materials in relation to acid erosion by means of the speckle coherent light scattering method (speckle laser images generated by healthy and injured dental tissues) for each material. 40 bovine teeth divided into 4 groups (10 samples in each group) were used. In each group, the samples were divided into 3 regions: control; with preventive treatment and erosive challenge; without preventive treatment and with erosive challenge. For each group a different dental material was used (MI Paste®, Duraphat® Fluoride Varnish, Regenerate ™ Enamel Science and Elmex® Protection Enamel Toothpaste). Preventive treatment was first performed in each group and then the erosive challenge with Sprite® Zero refrigerant (pH 2.58). After the erosive challenge, the samples were evaluated using the speckle coherent light scattering method and the results were statistically analyzed by the Two-Factor Variance Analysis (ANOVA) and the T-Pair Test, using a significance level of 95% (p<0.05). It was observed that there was a statistically significant difference between erosion regions with and without preventive treatment, however, there was no statistically significant difference between the preventive materials tested. The results of this study lead us to conclude that all the preventive materials tested were efficient in erosion prevention and that it is also possible to evaluate the preventive capacity of dental materials for professional use and daily use in relation to erosion through the standard speckle scattering.