An <i>in vitro</i> evaluation of the accuracy of two electronic apex locators to determine working length in the presence of various irrigants

Abstract

BACKGROUND: Cleaning and shaping of root canal system requires various irrigating solutions. The question is whether the presence of irrigation solution alters working length determination using apex locators. The purpose of this study was to compare the accuracy of Root ZX and i-Root apex locator for determining working length in the presence of different irrigating solution. MATERIALS AND METHOD: Eighty extracted single rooted human teeth were used. The teeth were sectioned at Cemento Enamel Junction (CEJ) and actual canal length determined. Then, working length measurements were obtained using Root ZX and i-Root apex locator in the presence of irrigating solutions namely 0.9% saline, 3% of sodium hypochlorite (NaOCl), 2% chlorhexidine digluconate(CHX) and 17% Ethylene Diamine Tetra Acetic acid (EDTA). The measurements obtained with Root ZX and i-Root apex locator were compared with actual canal length and subjected to statistical analysis using Post Hoc Test Tukey's Method. RESULTS: This study revealed that both the tested Electronic apex locators (EAL) were able to measure the canal length in the presence of tested irrigating solutions. The presence of irrigating solutions of saline, NaOCl, chlorhexidine and EDTA in the root canal marginally influenced the accuracy of the Root ZX or i-Root (P < 0.36), but with no clinical significance. CONCLUSION: Root ZX and i-Root can be used safely to determine working length in the presence of various irrigants. The content of the root canal did not influence the accuracy while measuring working length using Electronic apex locators (EAL)

Comparative evaluation of the effect of various irrigants and dry canal on electronic apex locators in locating simulated root perforations: an in vitro study

“…It uses frequencies of 5 KHz and 500 Hz. The manufacturer guarantees that its accuracy is good even in the presence of various canal contents [10]. However, our results differed from those in some of the previous studies in which the irrigants used did not affect the accuracy of different EALs, such as Root ZX, in determining root canal perforations [20].…”

“…i-Root (S-Denti Co. Ltd Seoul, Korea) apex locator uses different frequencies (i.e., 5 KHz and 500 Hz). The manufacturer claims that its accuracy is good irrespective of canal contents [10].…”

The influence of two forms of chlorhexidine on the accuracy of contemporary electronic apex locators

“…Erdemir et al showed no significant difference in file tip position between 2.5% NaOCl and 0.2% chlorhexidine gluconate using a Tri Auto ZX [21]. There were no differences in the accuracy of endometric measurements in the presence of sodium hypochlorite and CHX in the Prasad [42] and Gomes [43] studies. Different results were obtained by Özsezer et al in an in vivo study; they evaluated the performance of Propex after extirpation and in the presence of different irrigation solutions, including 2.5% NaOCl and 0.2% chlorhexidine gluconate.…”

Farklı Kanal İçi Ortamların Apeks Bulucuların Doğruluğu Üzerine Etkisi

“…Buna karşın, Prasad ve ark. 32 kök kanalında, aralarında % 2'lik KH'nin de bulunduğu, farklı solüsyonların varlığında Root ZX ve I-Root'un (S-Denti, Seul, Kore) doğruluğunun anlamlı olarak etkilendiğini NaOCl ve CHX gibi daha iletken çözeltilerde büyük sapma meydana geldiğini ve % 2'lik KH'in en büyük sapmayı gösterdiğini, ancak bunun klinik olarak anlamlı olmadığını belirtmişlerdir. EDTA EDTA, kök kanal dentinindeki kalsiyum iyonları ile oluşturduğu şelasyon özelliği sayesinde dentinin inorganik yapısını uzaklaştırması ve bu etkileşimin sonucu olarak da kök kanalının şekillendirilmesini kolaylaştırması özelliğiyle endodontide yaygın kullanılan bir yıkama solüsyonudur.…”