Retrieval of Separated Instrument by Trephining Technique in Radix Entomolaris – A Case Report

Sumaiya Dossa                        BDS

Javeria Ali Khan                      BDS, FCPS

Arshad Hasan                          BDS, FCPS

The endodontic treatment of a tooth with radix entomolaris can present significant challenges due to the presence of root curvature. The present report describes the endodontic treatment of a permanent mandibular first molar with type II radix entomolaris and separation of endodontic file in  the  root canal followed by  its  retrieval using the  trephining technique. A 38 years old female patient visited the Department of Operative Dentistry at the Dow University of  Health Sciences with complain of spontaneous and lingering pain and food impaction in tooth #46 since six months. On intraoral examination, tooth #46 had class II cavity. On periapical radiograph, an accessory root was observed. Endodontic treatment of the tooth was initiated. During shaping of the accessory canal, SX separated. The separated file was bypassed and successful retrieval was performed using the trephining technique. Endodontic treatment of the tooth was completed. The tooth was found to be asymptomatic in the followup visits and the patient was referred for a full coverage crown.

KEY WORDS: Radix entomolaris, trephining, Protaper Universal, modified gates glidden, root canal curvature, cyclic fatigue.

HOW TO CITE: Dossa S, Khan JA, Hasan A. retrieval of separated instrument by trephining technique in radix entomolaris- a case report. J Pak Dent Assoc 2019;28(3):143-148.


Received: 31 January 2019, Accepted: 10 March 2019

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