Damage Characterization of Dental Materials in Ceramic-Based Crown-like Layer Structures

摘要

A materials perspective of layered dental material systems representing tooth and crown structures is presented. on this study, failure modes in model bilayers and tri-layers with relatively hard, brittle ceramic (veneer and veneer/core) outer-layers on soft, tough (dentin-like) under-layers are evaluated. Contact testing simulating dental function on model layer systems with selected monolith or double-layer ceramic plates bonded to transparent polycarbonate substrates is used as a means for investigating the evolution of clinically relevant fracture modes.