EFFECT OF MOUTHWASH WITH CETYLPYRIDINE CHLORIDE ON THE SURFACE MICROHARDNESS OF SELF-CURING, HEAT-CURING AND CAD CAM POLYMETHYL METHACRYLATE. IN VITRO STUDY

Meza Zegarra K.M.; López Flores A.I. · Revista Cientifica Odontologica (2025) · DOI: 10.21142/2523-2754-1301-2025-227

Resumen

Objective: To evaluate the effect of Vitis CPC Protect mouthwash on the surface microhardness of three types of polymethylmethacrylate (PMMA): self-curing (Alike), thermocuring (Vitalloy) and CAD/CAM (Telium CAD). Methodology: 90 PMMA discs were manufactured, divided into three groups of 30 discs, with dimensions of 2 mm thick and 10 mm in diameter. Each group was subdivided into three subgroups (n = 10): The first subgroup to measure baseline microhardness, the second was immersed in distilled water as a control, and the third in Vitis CPC Protect mouthwash. The discs were kept in 20 ml solutions for 6 hours at 37°C, simulating daily use of rinsing twice a day for 6 months. Vickers surface microhardness was measured before and after immersion using a Vickers durometer with a load of 50 g. Subsequently, the data were statistically analyzed using the One-Way ANOVA test and Tukey's Multiple Comparisons test. Results: The initial microhardness values were: self-curing 14.05 ± 0.31, thermocuring 18.00 ± 0.60, and CAD/CAM 20.35 ± 1.80. After immersion in mouthwash, the values were: self-curing 13.81 ± 0.20, thermocuring 17.20 ± 0.38, and CAD/CAM 19.21 ± 0.60. ANOVA analyses and Tukey's test revealed statistically significant differences in the microhardness of thermocured PMMA. ©Las autoras, 2025. Publicado por la Universidad Científica del Sur (Lima, Perú).

Instituciones: Universidad Científica del Sur