Post-Curing Duration on the Mechanical Performance and Surface Quality of LCD-Printed Denture Base Resin

Objective: To investigated how post-curing times of 10 minutes and 20 minutes affect the mechanical properties and surface characteristics of LCD-printed denture base resin. Materials and Methods: Ninety standardized specimens were fabricated and distributed across three experimental groups consisting of an untreated control sample and two groups that received post-curing treatments for 10 minutes and 20 minutes. The three-point bending test evaluated flexural strength through its testing procedure. Vickers microhardness testing in a microhardness indenter was used to measure hardness while digital profilometry assessed surface roughness. Results: A trend for improved mechanical properties were observed with extended post-curing time although not statistically different. Conclusion: The mechanical strength of 3D-printed denture base resins may increase with longer post-curing times, but this method prevents damage to the surface.