Microhardness and flexural strength of two 3D-printed denture base resins

Objectives: To evaluate the microhardness and flexural strength of printed conventionally produced denture base acrylic resins. Methods: A total 32 parallelepiped specimens (64×10×3.3 mm) were manufactured using two light-cured resins suitable for 3D printing (V-Print Dentbase Denture 3D+) heat-cured conventional production (Probase Hot Villacryl Rapid) (n=8). After 24-h storage in water, Knoop (98.12 mN load 30 s) three-point (1 kN cell, at a crosshead speed 5 mm/min 50 mm between rods) determined. Microhardness data analyzed with one-way ANOVA followed by Tukey post-hoc tests. Flexural submitted to Kruskal-Wallis test. significance level 5% was considered (α=0.05). Results: The showed statistically significant (p<0.001) differences regarding < 3D+ Probase Rapid). No (p=0.527) found four Conclusions: had lower values than resins, but all similar strength.