Surface roughness and stainability of new-generation denture base materials after brushing and coffee thermocycling

Abstract Disk-shaped specimens were prepared from additively (NX and DT), subtractively (MZ), conventionally manufactured denture base resins (CV). Surface roughness color coordinates measured after polishing, simulated brushing, coffee thermocycling, while surface was also before polishing. Polishing reduced the of all materials. Brushing thermocycling increased only DT. CV had highest susceptibility to consecutive brushing as it roughness, which above clinically acceptable threshold. All materials similar stainability; MZ perceptible change brushing. Even though stainability tested similar, or computer-aided design manufacturing (CAD-CAM) smoother surfaces regardless material. Therefore, complete dentures made out these CAD-CAM may have favorable properties in long term. Graphical abstract