Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis

Background and objective: The accurate determination of working length has a major influence on the prognosis of root canal treatment. Electronic Apex Locators (EALs) appear to be excellent tools for the determination of working length (WL). This study aimed to assess the accuracy of four generation...

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Main Authors: Kaveh Nasiri, Karl-Thomas Wrbas
Format: Article
Language:English
Published: Elsevier 2022-01-01
Series:Saudi Dental Journal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S101390522100119X
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author Kaveh Nasiri
Karl-Thomas Wrbas
author_facet Kaveh Nasiri
Karl-Thomas Wrbas
author_sort Kaveh Nasiri
collection DOAJ
description Background and objective: The accurate determination of working length has a major influence on the prognosis of root canal treatment. Electronic Apex Locators (EALs) appear to be excellent tools for the determination of working length (WL). This study aimed to assess the accuracy of four generations of EALs. Materials and methods: For the purpose of the present review study, articles on different generations of EALs were selected from the PubMed, Cochrane Library, Google Scholar, and ScienceDirect databases using the search term apex locators. In addition, eligibility criteria were set and used for the inclusion of articles. Results: Fifteen studies satisfied the eligibility criteria and were included in this study. According to the results of four meta-analyses, the Cochran's Q-values were 3.042, 4.569, 0.636, and 0.443. The I2 value of four heterogeneity tests was zero (I2 = 0). In addition, the effect sizes (risk ratios) of the four meta-analyses were 1.040, 0.997, 0.935, and 0.959. Conclusion: Based on the findings of this study, all four generations of apex locators under review were found to be accurate in measuring working length. Hence, the generation of an apex locator does not play a significant role in how accurately electronic devices determine working length. In addition, the results suggest that more clinical and laboratory trials are required in order to evaluate the accuracy of different generations of EALs in measuring working length.
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spelling doaj.art-dc740112d4c44824a29456524e0335722022-12-22T04:09:31ZengElsevierSaudi Dental Journal1013-90522022-01-013411120Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysisKaveh Nasiri0Karl-Thomas Wrbas1Independent Researcher, Essen, Germany; Corresponding author.Department of Endodontics, Center for Operative Dentistry and Periodontology, University of Dental Medicine and Oral Health, Danube Private University (DPU), Krems, Austria; Department of Operative Dentistry and Periodontology, Center for Dental Medicine, Oral and Maxillofacial Surgery, Medical Center, University of Freiburg, Freiburg i.Br., GermanyBackground and objective: The accurate determination of working length has a major influence on the prognosis of root canal treatment. Electronic Apex Locators (EALs) appear to be excellent tools for the determination of working length (WL). This study aimed to assess the accuracy of four generations of EALs. Materials and methods: For the purpose of the present review study, articles on different generations of EALs were selected from the PubMed, Cochrane Library, Google Scholar, and ScienceDirect databases using the search term apex locators. In addition, eligibility criteria were set and used for the inclusion of articles. Results: Fifteen studies satisfied the eligibility criteria and were included in this study. According to the results of four meta-analyses, the Cochran's Q-values were 3.042, 4.569, 0.636, and 0.443. The I2 value of four heterogeneity tests was zero (I2 = 0). In addition, the effect sizes (risk ratios) of the four meta-analyses were 1.040, 0.997, 0.935, and 0.959. Conclusion: Based on the findings of this study, all four generations of apex locators under review were found to be accurate in measuring working length. Hence, the generation of an apex locator does not play a significant role in how accurately electronic devices determine working length. In addition, the results suggest that more clinical and laboratory trials are required in order to evaluate the accuracy of different generations of EALs in measuring working length.http://www.sciencedirect.com/science/article/pii/S101390522100119XElectronic working lengthGeneration apex locatorsMeta-analysis
spellingShingle Kaveh Nasiri
Karl-Thomas Wrbas
Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
Saudi Dental Journal
Electronic working length
Generation apex locators
Meta-analysis
title Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
title_full Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
title_fullStr Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
title_full_unstemmed Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
title_short Accuracy of different generations of apex locators in determining working length; a systematic review and meta-analysis
title_sort accuracy of different generations of apex locators in determining working length a systematic review and meta analysis
topic Electronic working length
Generation apex locators
Meta-analysis
url http://www.sciencedirect.com/science/article/pii/S101390522100119X
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