Moshonov J, Slutzky-Goldberg I
Dept of Endodontics, Hebrew University, Hadassah School of Dental Medicine, Jerusalem, Israel.
Int J Comput Dent. 2004 Oct;7(4):359-70.
The accuracy of working length determination in root canal treatment plays a crucial role in the treatment and prevention of periapical disease. Since the introduction of the first apex locator by Sunada in 1961, new and more accurate devices have been developed. Electronic apex locators reduce the number of radiographs required and may detect root canal perforations and fractures. Third and fourth generation apex locators can operate in the presence of intact or necrotic tissue, blood, inflammatory exudates, and various irrigants. The Raypex 4 and the Apex NRG novel apex locators are discussed in detail.
根管治疗中工作长度测定的准确性在根尖周病的治疗和预防中起着至关重要的作用。自1961年舟田发明第一台根尖定位仪以来，已研发出更新、更精确的设备。电子根尖定位仪减少了所需的X线片数量，并且可以检测根管穿孔和骨折。第三代和第四代根尖定位仪能够在存在完整或坏死组织、血液、炎性渗出物及各种冲洗液的情况下工作。本文将详细讨论Raypex 4和Apex NRG新型根尖定位仪。
