Efeito anti-erosivo de géis experimentais a base de própolis sobre lesões iniciais em dentina cervical radicular bovina

Abstract

Objective: The aim of this study was to evaluate the preventive potential of na experimental propolis-based gels on the inorganic structure of initial dentin erosion lesions. Materials and Methods: Forty bovine cervical dentin samples (4x4x2 mm) were obtained and pre-eroded in a 1% citric acid solution, pH 2.0, for 10 minutes. The samples were then randomized into four groups based on the anti-erosive treatment: G1 – experimental gel without active component; G2 – experimental gel with 0.5% propolis; G3 – experimental gel with 1% propolis; G4 – Ultra EZ desensitizing gel (Ultradent, Indaiatuba, SP, Brazil). Erosion cycling and treatment were performed for 3 days. After cycling, the samples were subjected to 3D profilometry testing to map the surface topography and measure the tooth structure loss (TSL). Scanning electron microscopy (SEM) was then performed for qualitative analysis to assess the surface morphology of the specimens. The One-way ANOVA test, followed by the Tukey post-test, was used to analyze the data. Results: The lowest roughness values were observed in the experimental group G3 (p < 0.05). Additionally, TSL was significantly lower in group G3 compared to the other groups (p < 0.05). The experimental groups G2 and G3 showed obliteration of dentinal tubules. Furthermore, in G3, a high coverage of precipitates on the surface of the samples was observed. Conclusion: Thus, the experimental propolis-based gel at 1% showed promising performance on initial dentin erosion lesions.