The goal of this study is to determine the effect of bruxism on the success of posterior composite restorations (PCRs) in endodontically treated teeth (ETT). The null hypotheses of present study were as follows: (1) bruxism would not have a significant effect on the success rate of PCRs in ETT; (2) other demographic and clinical variations, such as frequency of coloring agent usage, smoking habits, presence of pulpal pathology, periapical lesion, periodontal condition, antagonist tooth condition, cavity margin level, quality of endodontic treatment, enamel cracks, temporomandibular joint (TMJ) disorders, lateral occlusion scheme, institution where the restoration was performed, number of restored surfaces, and follow-up period, would not have a significant effect on the success rate of PCRs in ETT; and (3) functional, esthetic, and biological clinical success of PCRs of bruxists would not differ from that of non-bruxists. This cross-sectional, case-control study included 40 case patients (bruxists with PCR post-ETT) and 40 controls (non-bruxists). Sociodemographic characteristics and clinical findings were recorded. The PCRs on the relevant teeth were evaluated according to the revised FDI criteria.
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Rate of Clinical success
Timeframe: 1-5 years-follow up period