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A retrospective comparison of outcome of root canal treatment using two different protocols
Susan E Hoskinson1, Yuan-Ling Ng, Anthony E Hoskinson
1Department of Conservative Dentistry, Eastman Denatal Institute for Oral Healthcare Sciences, University College London, United Kingdom.
Objectives:
This retrospective study (1) compared the outcome of root canal treatment performed by an endodontist using 1 of 2 different protocols and (2) evaluated the influence of factors affecting outcome.
Study Design:
A total of 200 teeth and 489 roots (Protocol A, 83 teeth/200 roots; Protocol B, 117 teeth/289 roots) treated nonsurgically with root canal 4 to 5 years previously were examined clinically and radiographically according to strict criteria. Generalized estimating equations were used to perform logistic regression to analyze data.
Results:
The rate of complete healing for Protocol A (78%) was similar to that of Protocol B (76%). The pulpal status (odds ratio = 2.399, P =.040) and presence (odds ratio = 1.696, P = 0.015) and size (odds ratio = 0.823, P <.001) of periapical lesion were the only factors significantly affecting treatment outcome.
Conclusion:
The preoperative status of the pulp and the presence and extent of periapical periodontitis were important prognostic determinants of treatment outcome in this study.