Elsevier

Journal of Endodontics

Volume 37, Issue 3, March 2011, Pages 316-320
Journal of Endodontics

Clinical Research
Outcomes of Endodontic Micro-resurgery: A Prospective Clinical Study

https://doi.org/10.1016/j.joen.2010.11.029Get rights and content

Abstract

Introduction

This study examined the outcomes of endodontic resurgery by using current microsurgery techniques on failed teeth with previous endodontic surgery. Another goal was to determine any significant outcome predictors of endodontic surgery by determining the causes of failure in the first endodontic surgery.

Methods

The data were collected from patients in the Department of Conservative Dentistry at the Dental College, Yonsei University in Seoul, Korea between March 2001 and May 2009. All 54 teeth that required surgical retreatment were included in this study. All surgical procedures were performed by using an operating microscope and biocompatible root-end filling materials such as mineral trioxide aggregate (MTA) or Super EBA. The patients were recalled every 6 months for 2 years and every year thereafter to assess the clinical and radiographic signs of healing.

Results

The recall rate was 77.8% (42 of 54 patients). Of the 42 cases recalled, 39 cases were included in the success category, giving an overall success rate of 92.9%. The most common possible causes of failure were no root-end filling and incorrect root-end preparation.

Conclusions

The use of microsurgical techniques and biocompatible materials such as MTA and Super-EBA resulted in a high clinical success rate, even in endodontic resurgery.

Section snippets

Case Selection and Inclusion/Exclusion Criteria

The data were collected from patients in the Department of Conservative Dentistry at the Dental College, Yonsei University in Seoul, Korea between March 2001 and May 2009. All patients were examined for inclusion and a full history, and the clinical and radiographic examinations were undertaken to determine whether the tooth for which they had requested surgical retreatment was suitable.

The clinical criteria were the following: (1) history of a prior surgical treatment according to the

Results

Of the 54 cases treated, 42 cases came for recall after a period of 12 months. A recall rate of 77.8% (42 of 54 patients) was obtained. Table 2 presents the distribution of cases in relation to the recall period. Table 3 lists the distribution of the healing categories. The kappa value was 0.76, which shows the agreement between the 2 examiners was good. Of the 42 cases recalled, 39 cases were included in the success category, 33 and 6 with complete and incomplete healing, respectively. The

Discussion

The meta-analysis reported by Peterson and Gutmann (22) showed a low healing rate of 35.7% after resurgery. However, 5 of the 8 studies included in the analysis were published more than 30 years ago before the advent of microsurgical techniques and more biocompatible materials for root-end fillings. With more recent surgical techniques including magnification loupes (×4.5) and ultrasonic techniques, Gagliani et al (23) compared the outcomes of cases of endodontic surgery with cases of

Acknowledgments

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2010-0021281).

The authors deny any conflicts of interest related to this study.

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