introduction: decayed teeth are one of the diseases of civilization. intraoral factors which interact with the others such as heredity, cultural and social factors are involved in the initiation of the disease. among social factors, health care is particularly important. the aim of the present study was to evaluate dmft, dmft and gingivitis in the first-year students of elementary, guidance and...

background: catheter ablation is widely used for treatment of atrial fibrillation. the use of fluoroscopic and non-fluoroscopic mapping systems in catheter ablation is common. this study conducted to investigate the safety and effectiveness of navx non-fluoroscopic mapping system.   methods : in this study, the appropriate electronic databases including cochrane library and ovid medline searche...