Clinical ResearchPrognostic Factors Relating to the Outcome of Endodontic Microsurgery
Section snippets
Case Selection
Clinical records of all patients who had undergone an endodontic microsurgery over a 6-year period (January 1997–December 2003) at the National Dental Centre of Singapore were examined. All teeth had been assessed before surgery by endodontists for adequacy of previous root canal treatment and necessity for endodontic microsurgery. Anterior and posterior permanent teeth with a recall period after surgery of between 1 and 2 years were selected for this study. Teeth with previous root-end
Results
Of the 243 patients who had undergone an endodontic microsurgery during the study period, the following exclusions were made: teeth with vertical root fractures (1.2%), root resorption (1.2%), and perforations (1.6%); teeth with previous apical surgery (15%); and teeth not in the recall period after surgery of 1–2 years (43%).
Finally, 93 teeth (38%) were eligible for the study and subjected to further analysis. A univariate description of patient characteristics and preoperative,
Discussion
The percentage of healed and healing teeth in this study was found to be 78.5% after a recall period of 1–2 years. This percentage is lower than results published in other studies using modern techniques including the use of an SOM; ultrasonic surgical tips; and root-end filling materials such as Super EBA, IRM, or MTA 8, 11. A 1- to 2-year recall period was chosen because previous studies have shown that outcomes at 1 year are highly predictive of future outcomes, and teeth healed at 1 year
Conclusions
The use of modern endodontic surgical techniques and materials resulted in 78.5% healed and healing teeth with a recall period of 1–2 years. Regression analysis showed that females had higher success rates than males. Surgery performed on maxillary anterior teeth had a significantly higher success rate than mandibular anterior teeth. Preoperative probing depths of ≤3 mm were associated with a higher success rate.
Acknowledgments
The authors wish to thank Dr John Allen, Duke-NUS Graduate Medical School Singapore, for his quantitative contribution.
The authors deny any conflicts of interests related to this study.
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