Wear, Occlusal

This randomized clinical trial aims to to evaluate and compare the 24-month surface wear of the restoration and the surface wear of the opposing natural tooth structure of CAD/CAM Hybrid Ceramic (SHOFU Hard blocks) versus Resin-based Composite (BRILLIANT Crios) overlays, utilizing a digital subtraction methodology (Intraoral Scanner and Geometrical Subtraction Software) in endodontically treated molar teeth.

Wear resistance is one of the most important physical properties of teeth, and wear resistance of zirconia against artificial acrylic, enamel and composite resin denture teeth has not been clearly established. Implant-supported dental restorations present a higher threshold for occlusion perception when compared to natural teeth, which can occlusal overload mechanisms or lead to wear of rehabilitation materials or the antagonist arch. In clinical conditions, however, many other factors influence the complex interaction between dental enamel and opposing substrates: patient-related factors such as dietary habits, dysfunctional occlusion, masticatory forces, and bruxism contribute to accelerated enamel loss of antagonist teeth.