Survival rates against fracture of endodontically treated posterior teeth restored with full-coverage crowns or resin composite restorations: a systematic review

This systematic review aims to summarize the current clinical studies that investigated survival rates against fracture of endodontically treated posterior teeth restored with crowns or resin composite restorations. Literature search were performed using keywords. Publications from 1980 to 2016 were searched in PubMed, ScienceDirect, Web of Science, MEDLINE, and SCOPUS. Included studies were selected based on inclusion and exclusion criteria. Three clinical studies were included: 1 randomized controlled trial and 1 prospective and 1 retrospective cohort studies. Pooled survival rates ranged from 94%–100% and 91.9%–100% for crowns and resin composite, respectively. The majority of teeth had no more than 3 surface loss of tooth structure. The studies included were heterogeneous, and were not appropriate for further meta-analysis. Current evidence suggested that the survival rates against the fracture of endodontically treated posterior teeth restored with crowns or resin composites were not significantly different in the teeth with minimum to moderate loss of tooth structure.

Potential effectiveness of health warning labels among employees in Thailand.

OBJECTIVE: Explore and investigate the perceptions and responses of employees regarding the effects of a Health Warning Label (HWL) on their decision to encourage quitting and stages of change in smoking behavior. MATERIAL AND METHOD: One thousand six hundred thirty seven employees in workplaces from four regions, including Bangkok city, were studied during the year 2005-2006. Six hundred nine employees (both non- or cigarette smokers) were part of a cohort study using qualitative and quantitative approaches. Questionnaires were used to sample the cohort twice and two individuals per factory were interviewed in-depth. RESULTS: The New-HWL that made the best impression was the "cancer caused by cigarette smoking" and 3.8% stopped smoking after seeing the New-HWL. Moreover, New-HWL increased employees "pro" attitudes about smoking cessation. Decisional balance that reflected different "con" to quit, among non-quitting and quitting smokers. CONCLUSION: New-HWL significantly increased attitudes about smoking cessation.