Treatment outcome in endodontics: the Toronto Study. Phase III: initial treatment.
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 < or = 0.05) outcome predictors: preoperative AP (OR = 3.5; CI 1.7-7.2; healed: absent, 93%; present, 80%), number of roots (OR = 2.2; CI 1.0-4.7; healed: 1 - 92%; > or =2 - 83%), and intraoperative complications (OR = 2.2; CI 1.1-4.5; healed: absent, 88%; present, 76%). Treatment technique (OR = 2.8; CI 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.
MSc Program in Endodontics, Department of Graduate Endodontics, University of Toronto, Toronto, Ontario, Canada.
Vincent L
VL
Marquis
Thuan
T
Dao
Mahsa
M
Farzaneh
Sarah
S
Abitbol
Shimon
S
Friedman
D000328:Adult; D016009:Chi-Square Distribution; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009864:Ontario; D010485:Periapical Periodontitis / Q000000981:diagnostic imaging / Q000628:therapy*; D011379:Prognosis; D011446:Prospective Studies; D011859:Radiography; D012389:Root Canal Obturation / Q000379:methods*; D018915:Root Canal Preparation / Q000379:methods; D016896:Treatment Outcome