Analysis on results of endodontic treatment and influencing factors / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To assess the clinical outcome of root canal therapy (RCT) and the various factors that may influence the outcome of RCT.</p><p><b>METHODS</b>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.</p><p><b>RESULTS</b>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.</p><p><b>CONCLUSIONS</b>The pre-operative periapical status, quality of root filling and the integrity of coronal restoration are main predictors of outcome in RCT.</p>