Influence of additional reinforcement of fixed long-term temporary restorations on fracture load.

Purpose: In implant dentistry, temporary restorations (TR) might often be required for up to one year. The aim of this in vitro study was to evaluate the long-time performance of four-unit TRs in the posterior region based on different materials and reinforcement methods.

Methods: One hundred and forty four TRs were manufactured on 16 models simulating an oral situation of two missing posterior teeth.