Influence of elastic modulus mismatch between dentin and post-and-core on sequential bonding failure

ConclusionsUsing failure criteria for cement adhesion, sequential changes of adhesion failure between dentin and post-and-cores were observed. Local stress concentrations leading to severe destruction of dentin were caused by not only materials of post-and-cores but their adhesive conditions to dentin. Nonlinear finite element analysis (FEA) using complex structure model which deals with alterations of interfacial condition between components could provide the simulation for the clinical failure of teeth restored with post-and-cores.

Source: Journal of Prosthodontic Research - January 15, 2019 Category: Dentistry Source Type: research