牙髓活力对使用Elements诊断仪和根尖定位仪测定根管长度的影响。

Influence of pulp vitality on length determination by using the Elements Diagnostic Unit and Apex Locator.

作者信息

Akisue Eduardo, Gavini Giulio, de Figueiredo Jose Antonio Poli

机构信息

Endodontic Department, Santa Cecilia University, Santos, Sao Paulo, Brazil.

出版信息

Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007 Oct;104(4):e129-32. doi: 10.1016/j.tripleo.2007.04.018. Epub 2007 Jul 26.

DOI:10.1016/j.tripleo.2007.04.018

PMID:17656133

Abstract

OBJECTIVE

The aim of this study was to compare the influence of the pulp condition (vital or necrotic) on the determination of the root canal length by using a fourth generation electronic apex locator (EAL).

STUDY DESIGN

The Elements Diagnostic Unit and Apex Locator was used to measure 143 teeth, totaling 294 canals with different conditions (236 necrotic and 58 vital pulp), for root length. After assessing the root canal and ascertaining the tooth length by using the EAL, the position of the file was confirmed by radiograph. The distance between the file tip and the root end was measured radiographically and was compared with the electronic measurement.

RESULTS

Under clinical conditions within an acceptable range lower than 0.5 mm, the concordance between the 2 measurements was 96.6%. This new EAL showed no significant difference (P < or = .05) on accuracy of root canal length determination between vital cases (94.8%) and necrotic cases (97%).