An in vivo evaluation of an electronic apex locator that uses the ratio method in vital and necrotic canals

Influence of pulp condition on the accuracy of an electronic foramen locator in posterior teeth: an in vivo study

“…In vivo studies using teeth scheduled for extraction showed no differences in EFL measurements between vital and necrotic teeth. [5][6][7] Similar results have been obtained in clinical studies that used radiographic analysis as a comparison method. Smadi,9 for example, tested the effect of preoperative pulp status on the behavior of the TAZX foramen locator and did not find statistical differences in the mean distance from the tip of the root filling to the radiographic apex between vital and non-vital canals.…”

“…endodontics, [4][5][6][7][8][9][10][11][12][13] has some advantages, e.g. the possibility to study root canal anatomy and to identify periapical lesions, as reported by ElAyouti et al 14 Conversely, one disadvantage of this method is related to the difficulties involved in locating the apical foramen and the apical constriction.…”

Farklı preparasyon genişliklerinde iki elektronik apeks bulucu cihazın doğruluğunun değerlendirilmesi

“…14,15 Diğer çalışmalarda ise klinik olarak kabul edilebilir olan ±1.0 mm tolerans aralığı kullanıl-mıştır. 4 Biz de çalışmamızda apikalde preparasyon yapıldığından ve dişlerin farklı apikal daralım şekillerine sahip olabileceğinden ±1.0 mm hata payını kabul ettik.…”

An in vitro Comparison of Root Canal Measurement in Permanent Teeth by Electronic Apex Locator, Conventional and Digital Radiography

“…These results confirmed previous studies that demonstrate that electronic apex locators can accurately determine the canal length to within 0.5 mm of the apical foramen. 14,15,18,19 But the accuracy of apex locators can be affected by different types of electrolytes, foramen size and pulp vitality. This study found the least magnitude of deviation from the mean in measurements by the apex locator.…”

“…13 Both in vitro and in vivo have confirmed the accuracy of apex locators. [14][15][16] But the use of apex locators along with a pre-and postoperative digital radiograph is advised in most of the circumstances. This study aims to compare the accuracy of measurements obtained through these methods in comparison with the actual working length estimated from extracted tooth.…”