Effect of Ultrasonic Activation of Endodontic Sealers on Intratubular Penetration and Bond Strength to Root Dentin |
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| Institution: | 1. Department of Conservative Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil;2. Department of Stomatology, Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil;1. Department of Endodontics, Faculty of Dentistry, Ondokuz May?s University, Samsun, Turkey;2. Department of Endodontics, Faculty of Dentistry, ?zmir Katip Çelebi University, ?zmir, Turkey;3. Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada;4. Dental Specialty Center, Brazilian Military Police, Minas Gerais, Brazil;1. School of Health Sciences, Universidade Positivo, Curitiba, Paraná, Brazil;2. Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, São Paulo, Brazil;1. Department of Endodontics, Universitat Internacional de Catalunya, Barcelona, Spain;2. Departament of Conservative Dentistry, King''s College London Dental Institute, London, United Kingdom;3. Specialist Practice, London, United Kingdom;1. Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil;2. School of Dentistry, Federal University of Paraiba, João Pessoa, Paraíba, Brazil;3. Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil;4. Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil |
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| Abstract: | IntroductionThis study aimed to evaluate the effect of ultrasonic activation (UA) of endodontic sealers on dentin tubule penetration and the bond strength to root dentin.MethodOne hundred single-rooted teeth were prepared with 40.06 nickel-titanium instruments and divided into 2 groups: with or without UA. Three resin-based sealers (MTA Fillapex Angelus Dental Solutions, Londrina, PR, Brazil], Sealer Plus MK Life Medical and Dental Products, Porto Alegre, RS, Brazil], and AH Plus Dentsply, DeTrey GmbH, Konstanz, Germany]; n = 20) and 2 calcium silicate–based sealers (Sealer Plus BC MK Life Medical and Dental Products] and EndoSequence BC Brasseler, Savannah, GA], n = 20) were used and subdivided (n = 10) according to the protocols. Fluo-3 (Thermo Fisher Scientific, Waltham, MA) and rhodamine B dyes were added to the calcium silicate- and resin-based sealers, respectively. In the UA groups, the activation was performed for 40 seconds followed by lateral compaction. Samples were transversely sectioned to evaluate the dentin tubule penetration and the bond strength to root dentin. The penetration data were analyzed with the Student t test, 1-factor analysis of variance, and Bonferroni tests. Bond strength was evaluated using the Student t test, Kruskal-Wallis, and Dunn post hoc test.ResultsResin-based sealers showed the highest tubule penetration without UA (P < .05). UA significantly enhanced MTA Fillapex and Endosequence BC dentin tubule penetration (P < .05). AH Plus and Sealer Plus BC improved their bond strength to root dentin after UA (P < .05). AH Plus/UA, Sealer Plus/UA, and Sealer Plus BC/UA presented the highest bond strength values (P < .05). Adhesive failures were predominant in all groups regardless of the use of ultrasound.ConclusionsUA interferes with tubule penetration and the bond strength to root dentin of resin- and calcium silicate–based sealers. |
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| Keywords: | Bond strength dentin tubule penetration endodontic sealers root canal filling ultrasonic activation |
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