ArticleJournal of conservative dentistry and endodontics2026
Effectiveness of Erbium: Yttrium-Aluminum-Garnet laser with side-firing spiral EndoTip and ethylenediaminetetraacetic acid on smear layer removal: A scanning electron microscopic study.
Article in Journal of conservative dentistry and endodontics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Background: Successful endodontic therapy depends on effective smear layer removal to ensure optimal disinfection and sealing of the root canal system. Chelating agents such as Ethylenediaminetetraacetic acid (EDTA) are routinely used; however, their ability to clean the apical third remains limited. Laser-assisted irrigation has been proposed as an adjunct to enhance smear layer removal. Aim: This study aims to evaluate and compare the effectiveness of 17% EDTA, Erbium: Yttrium-Aluminum-Garnet (Er: YAG) laser (side-firing spiral EndoTip), and their combination in removing the smear layer from root canal dentin. Materials and Methods: Forty extracted single-rooted premolars were instrumented using ProTaper Universal rotary files and randomly divided into four groups ( Statistical Analysis: Data were analyzed using SPSS version 21.0. Intergroup comparisons were performed using the Chi-square test, with Results: The combination of EDTA and Er: YAG laser-activated irrigation demonstrated the most effective smear layer removal across all root canal levels, followed by laser alone, EDTA, and the control group ( Conclusion: Er: YAG laser activation combined with 17% EDTA significantly improves smear layer removal and enhances overall root canal cleanliness compared to conventional irrigation methods.
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