In vitro comparison of the surface microhardness of three nanohybrid resin composites immersed in different pigmented beverages for varying exposure times

Ayala-Amaya W.; Castro-Ramirez L.; Santander-Rengifo F.; Alvino-Vales M.; Turpo-Claudio D.; Cayo-Rojas C. · Journal of Clinical and Experimental Dentistry (2025) · DOI: 10.4317/jced.62640

Resumen

Background: To assess the surface microhardness (SMH) of three nanohybrid resin composites after immersion in different pigmented beverages for varying exposure times. Material and Methods: This in vitro longitudinal experimental study consisted of 120 samples equally distributed for Filtek Z350XT, Tetric N-Ceram, and Brillant NG resin composites. These were immersed for 1, 4, and 7 days in burgundy wine, ground coffee, purple corn beverage, and artificial saliva (control). For statistical analysis, the Kruskal-Wallis H-test and Friedman’s test with Bonferroni’s post hoc test were used. The significance level was p<0.05. Results: When comparing the SMH on days 1, 4, and 7 of immersion in different beverages, it was evident that there were no significant differences in the composite resins Filtek Z350XT (p = 0.678, p = 0.731, and p = 0.225; respectively) and Tetric N-Ceram (p = 0.214, p = 0.382, and p = 0.521; respectively). However, there were significant differences in Brilliant NG resin composite (p = 0.010, p = 0.011, and p = 0.006; respectively), showing that coffee significantly decreased the SMH of this resin compared to artificial saliva (p = 0.012, p = 0.007, and p = 0.004; respectively). In addition, burgundy wine, ground coffee, and purple corn significantly decreased the SMH of the three composite resins over time (p<0.001). Conclusions: Brilliant NG resin composite significantly decreased its SMH on days 1, 4 and 7 of immersion in all beverages compared to Filtek Z350XT and Tetric N-Ceram resin composites. On the other hand, over time, burgundy wine, ground coffee, and purple corn significantly decreased the SMH of all three resin composites, while artificial saliva did not. © Medicina Oral S. L. C.I.F. B 96689336

Instituciones: Universidad Privada San Juan Bautista