West China Journal of Stomatology ›› 2021, Vol. 39 ›› Issue (4): 458-463.doi: 10.7518/hxkq.2021.04.013

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A retrospective study of endodontic microsurgery about 302 patients

Chen Yiyan(), Pradan Siras Prasad, Yang Jinbo()   

  1. State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Dept. of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
  • Received:2020-10-21 Revised:2021-02-19 Online:2021-08-01 Published:2021-08-10
  • Contact: Yang Jinbo E-mail:995900181@qq.com;15884485592@163.com

Abstract: Objective

To investigate the outcome of endodontic microsurgery and analyze the potential prognostic factors, and to evaluate the value of surgical classification by Kim and Kratchman.


Collecting clinical examination and radiographical examination of endodontic microsurgery cases (which were followed up at least 1 year), which were classified according to Kim and Kratchman, and we analyzed the outcome of endodontic microsurgery and its potential prognostic factors.


302 patients (400 teeth) who received endodontic microsurgery were included. The one year success rate of endodontic microsurgery was 94.25%. Different classification had significant influences on the outcome of endodontic microsurgery (P<0.05), and the success rate of class B and C were better than those of class D, E, and F. The position of teeth had significant influences on the outcome of endodontic microsurgery (P<0.05). The success rate of maxillary teeth was higher than that of mandibular teeth. The success rate of anterior teeth was higher than that of posterior teeth (P<0.05). The quality of root end filling and first or second surgery had no effect on the outcome (P>0.05).


Endodontic microsurgery is an effective treatment method for saving affected teeth, and it can get a good result. Tooth position and classification are the potential prognostic factors. The surgical classification of Kim and Kratchman can help to predict the outcome of endodontic microsurgery.

Key words: endodontic microsurgery, outcome, influence factor, retrospective study

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