Assessment of CAD-CAM polymers for digitally fabricated complete dentures

Statement of problem Information on the mechanical properties materials used for manufacturing computer-engineered complete dentures is scarce. Purpose The purpose this in vitro study was to evaluate 3 prepolymerized polymethyl methacrylate (PMMA) resins fabrication computer-aided design and (CAD-CAM) milled (CDs), as well 2 denture base polymers conventionally fabricated CDs. Material methods Three CAD-CAM were evaluated: Degos Dental L-Temp, IvoBase CAD, Zirkonzahn Temp Basic Tissue. Two manufactured also included controls (Palapress Paladon 65). Each material type sectioned into bars flexural strength, nanohardness, elastic modulus, surface microhardness evaluation (n=8/material). Half specimens stored water 30 days, while other half dry-stored. A 2-way ANOVA conducted detect effect storage evaluated (α=.05). Linear contrasts compare differences among types conventional ones. Results had a significant influence hardness investigated (P<.001). post hoc Scheffé test strength revealed nonsignificant difference interaction between L-Temp (P=1.000). In terms no found when comparing Palapress with Paladon, CAD (P=.575). Conclusions tested showed variation their properties, satisfactory behavior materials. However, results obtained testing suggest that use might still be advisable.