Evaluation of Accuracy of Two Frequency-Based Electronic Root Canal Length Measurement Devices – An Ex Vivo Study.
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 10
Abstract
The location of apical constriction is paramount for a successful endodontic therapy. Electronic apex locators operate on the basis of conductance of electricity through hollow tube. Useful when the apical portion of the canal is obscured by anatomic structures, such as impacted teeth, tori, the zygomatic arch, excessive bone density, overlapping roots, or shallow palatal vaults. Electronic apex locators reduce the radiation dose and treatment time. The Frequency Dependent Apex Locators are based on the principle that there is a maximum difference of impedance between electrodes depending on the frequencies used. The major advantages with these apex locators are that they operate in an electroconductive environment in the presence of pus, and pulpal tissue remnants. The aim of this study was to compare the accuracy of dual frequency based electronic apex locators under clinical conditions. This study was done on 40 single rooted non carious teeth designated for extraction for orthodontic or periodontal reasons. After access opening and pulp extirpation, working length was measured using both apex locators alternatively using K file. The file was luted in the canal using GIC. The tooth was then extracted. Group I comprises of the tooth with the working length measured Neosono Copilot and in Group II is that of ROOT ZX. The apical third of each specimen were then viewed in Stereo microscope under 30 x magnifications. The distance from file tip to minor diameter was measured for each apex locator. The values obtained were analysed statistically by Paired Sample’t’ test. The results showed that the working length measurements by both apex locators were not statistically different. The use of Electronic Apex Locators is a reliable method of determining root canal length. The measurement made by both devices where not different statistically. The results show that the electronic root canal length measurement device is an adjunct to endodontic practice.
Authors and Affiliations
Dr. K. Karpagavinayagam, Dr. S. Vidhya Shankari, Dr. M. R. Srinivasa
Keywords
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- EP ID EP244448
- DOI 10.9790/0853-1610106366
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