The Clinical Curative Effect of Root Canal Therapy to Pulpitis and Apical Periodontitis

Objective To explore the clinical curative effect of root canal therapy(RCT) to pulpitis and apical periodontitis.Methods Nine hundred ninety eight patients(1 008 teeth)with pulpitis and apical periodontitis were treated with RCT.Root canal filling quality and treatment period of these teeth were evaluated.Teeth of the total were followed up 2 years and 2-year success rate were evaluated.And to observe the failure factors in RCT.Results ①In 1 008 teeth,the number of adequate filling,underfilling,and overfilling were 783,177 and 48.The ratios of adequate filling,underfilling,and overfilling were 77.68%,17.56% and 4.76%,receptively.②Before the root canal filling was significantly less than molar(P0.01).③Following up 2 years,the failure rate is 12.28% in 1-year,the failure rate is 15.29% until 2-year.Conclusion The clinical curative effect of RCT to pulpitis and apical periodontitis is excellent.The numbers and morphological difference type of root canal,root curvature and calcification have significantly influenced outcome of RCT.