Heydari Azar, Rahmani Mona, Heydari Mostafa
Department of Endodontics , Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
Dentist, Tehran, Iran.
Iran Endod J. 2016 Summer;11(3):237-40. doi: 10.7508/iej.2016.03.018. Epub 2016 May 1.
Instrument breakage during treatment can lead to serious complications and carries the risk of treatment failure. When a file breaks in the canal, bypassing or removal can be difficult and the long-term prognosis of the tooth may be compromised. Sometimes surgery may be indicated for removal of the broken segment. Often some part of the root cannot be cleaned because of blockage by the broken file. This report presents a specific approach in non- surgical removal of a broken file from a maxillary lateral incisor with a buccal sinus tract and a broken instrument in the apical third which was partially over extended into the periapical lesion. The broken file was accessed through the sinus tract and pushed into the canal. The canal was cleaned and shaped, filled with mineral trioxide aggregate (MTA).
A sinus tract can be a specific path to reach the root tip and get access to remove the foreign materials pushed beyond the root canal space.
治疗过程中器械折断可导致严重并发症,并存在治疗失败的风险。当锉针在根管内折断时,绕过或取出可能很困难,牙齿的长期预后可能会受到影响。有时可能需要手术来取出折断的部分。由于折断的锉针堵塞,通常牙根的某些部分无法清洁。本报告介绍了一种非手术方法,用于从上颌侧切牙取出折断的锉针,该牙伴有颊侧窦道,根尖三分之一处有折断器械,且部分器械过度延伸至根尖病变区。通过窦道找到折断的锉针并将其推入根管。根管进行了清理和塑形,并用三氧化矿物凝聚体(MTA)充填。
窦道可以是到达根尖并进入根管空间以外取出异物的特定途径。