title: [Analysis on results of endodontic treatment and influencing factors].
abstract: OBJECTIVE
  To assess the clinical outcome of root canal therapy (RCT) and the various factors that may influence the outcome of RCT.
  
  
  METHODS
  A total of 695 teeth from 357 patients were retrospectively studied three years after endodontic treatment. Pre- and intra-operative information was collected from the original patient records. The post-operative sign or symptom, periapical status and coronal restoration integrity were examined 3 years after obturation. Data were subjected to bivariate and multivariate analysis.
  
  
  RESULTS
  The cure rate for 695 teeth was 75.1%, 96.0% of which was considered to be functional. The tooth group, pre-operative pulp and periapical status, quality of root filling and integrity of coronal restoration were revealed by means of bivariate analysis to exert a significant influence on treatment outcome. The logistic analysis indicated that the odds for cure in the teeth with pre-operative periapical radiolucency, underfilling and "open" coronal restoration were significantly lower by 2 folds, 3 folds and 1.6 folds than their counterparts, respectively.
  
  
  CONCLUSIONS
  The pre-operative periapical status, quality of root filling and the integrity of coronal restoration are main predictors of outcome in RCT.
authors.affiliation: Department of Cariology and Endodontology, School of Stomatology, Wuhan University, Wuhan 430079, China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Cheng
authors.forename: Bin
authors.initials: B
authors.lastname: Peng
authors.forename: Ya
authors.initials: Y
authors.lastname: Shen
authors.forename: Zhuan
authors.initials: Z
authors.lastname: Bian
authors.forename: Ming-wen
authors.initials: MW
authors.lastname: Fan
mesh_terms: D000328:Adult; D000368:Aged; D003788:Dental Pulp Diseases / Q000628:therapy; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D010485:Periapical Periodontitis / Q000628:therapy; D012389:Root Canal Obturation; D012390:Root Canal Therapy; D016896:Treatment Outcome