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:: Volume 5, Issue 1 (March- 2016) ::
Caspian J Dent Res 2016, 5(1): 21-28 Back to browse issues page
Evaluation of the accuracy of two apex locators in endodontic treatment and retreatments: an ex vivo study
Yasser Samadi, Azadeh Harandi * , Ali Soleymani , Soraya Khafri , Saeid Tavanafar
,Dental Materials Research Center, Department of Endodontics, Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran. , azadeh.harandi@yahoo.com
Abstract:   (8940 Views)

Introduction: Working length determination is important in successful endodontic treatment and retreatment.This study evaluated the accuracy of two electronic apex locators Root ZX and Raypex®6 (EALs) in determining the electronic working length (EWL) of the root canals in endodontic treatment and retreatment.

Materials and Methods: Access cavities were prepared on forty extracted, single-rooted human teeth and the actual working length (AWL) of the canals was determined. In the first phase of the study, primary EWL of un-instrumented teeth was measured and compared between two EALs. In phase II, all of the teeth were pre-flared and divided into the control(n=10) and the retreatment groups (n=30). Canals in the retreatment group were obturated by the lateral condensation technique using Gutta percha and sealer. After 15 days, gutta-percha was removed, and then the secondary EWL was recorded and compared between the two devices, in treatment and retreatment groups. Data were analysed by paired t-test and t-test.

Results: Significant differences were found between both EALs in treatment and retreatment phases of the study (p<0.001).both EALs showed increased accuracy in retreatment group (p<0.001). However, no statistically significant differences were found between the control and retreatment groups in the second phase of the study for Root ZX (p = 0.929), and Raypex®6 (p=0.937).

Conclusion: Accuracy of the two EALs was similar and acceptable. EWLs determined by Root ZX were closer to the AWL. The EWL determination after pre-flaring improved the accuracy of EALs and root canal obturation remnant materials did not have any clear effect on the accuracy of these EALs.

Keywords: Endodontics, Gutta-percha, Retreatment, Root canal
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Type of Study: Research Paper | Subject: Endodontics
* Corresponding Author Address: Faculty of Dentistry, Babol University of Medical Sciences, Babol, Iran.
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Samadi Y, Harandi A, Soleymani A, Khafri S, Tavanafar S. Evaluation of the accuracy of two apex locators in endodontic treatment and retreatments: an ex vivo study. Caspian J Dent Res. 2016; 5 (1) :21-28
URL: http://cjdr.ir/article-1-182-en.html


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Volume 5, Issue 1 (March- 2016) Back to browse issues page
مجله تحقیقات دندانپزشکی کاسپین Caspian Journal of Dental Research
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