Journal article

Complications associated with fractured file removal using an ultrasonic technique

NJ Souter, HH Messer

JOURNAL OF ENDODONTICS | ELSEVIER SCIENCE INC | Published : 2005

Abstract

A technique utilizing modified Gates Glidden burs and ultrasonics has recently been advocated to remove fractured instruments from root canals. Varying extents of tooth structure are removed during this procedure, potentially leading to complications. This study evaluated the in vitro and in vivo complications associated with fractured file removal. Fractured instrument fragments were removed from three different levels (coronal, middle, or apical third) of mesiolingual canals of extracted human mandibular molars. The success rate, frequency of perforations, and root strength were recorded for each group. Perforations and unsuccessful file removal occurred only with fragments lodged in the a..

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University of Melbourne Researchers