Journal
JOURNAL OF ENDODONTICS
Volume 32, Issue 4, Pages 299-306Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.joen.2005.10.050
Keywords
apical periodontitis; endodontic treatment; prognosis; root canal therapy; treatment outcome
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The 4- to 6-year outcome of initial endodontic treatment was assessed for phase III (1998-1999) of the Toronto Study. Of the 532 teeth treated, 248 were from discontinuers (excluded), 142 from dropouts, 10 extracted, and 132 (50% recall) examined for outcome: healed (no apical periodontitis [AP], signs, symptoms) or diseased. Phase III was analyzed alone and combined with phases I, II (n = 373 teeth). Logistic regression performed on the combined phases I-III sample identified significant (p <= 0.05) outcome predictors: preoperative AP (OR = 3.5; Cl 1.7-7.2; healed: absent, 93%; present, 80%), number of roots (OR = 2.2; Cl 1.0-4.7; healed: 1 - 92%; >= 2 - 83%), and intraoperative complications (OR = 2.2; Cl 1.1-4.5; healed: absent, 88%; present, 76%). Treatment technique (OR 2.81 Cl 1.3-6.1; healed: Schilder, 89%; alternative, 73%) was suggested as an outcome predictor in teeth with AP, requiring confirmation from randomized controlled trials.
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