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ORIGINAL ARTICLE
Year : 2015  |  Volume : 5  |  Issue : 3  |  Page : 177-181

In vitro evaluation of the accuracy of five different electronic apex locators


1 Endodontist, Department of Dentistry, Kerala Institute of Medical Sciences, Thiruvananthapuram, Kerala, India
2 Department of Conservative Dentistry and Endodontics, Nehru Smaraka Vidya Kendra Sri Venkateshwara Dental College and Hospital, Bangalore, India
3 Department of Conservative Dentistry and Endodontics, Rajarajeswari Dental College and Hospital, Bangalore, Karnataka, India
4 Department of Conservative Dentistry and Endodontics, Annoor Dental College, Moovattupuzha, Kerala, India

Correspondence Address:
Nasil Sakkir
TC 2/453(22), Aisha Cottage, P.T Chacko Nagar, Medical College, P.O, Thiruvananthapuram - 695 011, Kerala
India
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Source of Support: Nil., Conflict of Interest: None


DOI: 10.4103/1658-5984.163622

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Objective of Study: To evaluate in vitro the efficacy of five different electronic apex locators (Root ZX II, i-Root, Endo Master, Triauto ZX, and Elements apex locator) in locating the minor diameter. Materials and Methods: Thirty freshly extracted single-rooted maxillary central incisors were used for the study. Standard access preparation was carried out and the teeth were glued to three plastic frames containing alginate. Electronic working length measurement was determined using all the five apex locators. Following this, the actual canal length was determined by introducing a size 15 K-file into the canal until the tip of the file became visible at the apical foramen under microscope. The mean values of actual length and electronic working length readings were compared using Student t-test and multiple comparison procedures. Results: The average value for actual root canal length was 22.483 ± 1.8731 mm; and the mean electronic root canal length values for Root ZX II, i-Root, Elements, Endo Master, and Triauto ZX apex locators was 22.483 ± 1.7640 mm, 22.400 ± 1.7390 mm, 22.717 ± 1.9462 mm, 22.767 ± 1.9061 mm, and 22.417 ± 1.7523 mm, respectively. P > 0.05 for all the five tested apex locators. Conclusion: All the five modern apex locators tested in this study can determine the working length with high precision and greater predictability.


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