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Type: Artigo
Title: Push-out bond strength of MTA HP, a new high-plasticity calcium silicate-based cement
Author: Silva, Emmanuel JNL
Carvalho, Nancy Kudsi
Zanon, Mayara
Senna, Plínio Mendes
De-Deus, Gustavo
Zuolo, Mário Luis
Zaia, Alexandre Augusto
Abstract: This study was designed to investigate the resistance to dislodgment provided by MTA HP, a new high-plasticity calcium silicate-based cement. Biodentine and White MTA Angelus were used as reference materials for comparison. Three discs 1 ± 0.1 mm thick were obtained from the middle third of the roots of 5 maxillary canines. Three 0.8-mm-wide holes were drilled on the axial surface of each root disc. Standardized irrigation was performed. Then the holes were dried with paper points and filled with one of the three tested cements. The filled dental slices were immersed in a phosphate-buffered saline (PBS) solution (pH 7.2) for 7 days before the push-out assessment. The Kruskal-Wallis test was applied to assess the effect of each endodontic cement on the push-out bond strength. Mann-Whitney with Bonferroni correction was used to isolate the differences. The alpha-type error was set at 0.05. All specimens had measurable push-out values and no premature failure occurred. There were significant differences among the materials (p <0.05). The Biodentine specimens had the highest push-out bond strength values (p < 0.05). MTA HP had significantly higher bond strength than White MTA (p < 0.05). MTA HP showed better push-out bond strength than its predecessor, White MTA; however, Biodentine had higher dislodgment resistance than both MTA formulations
Subject: Endodontia
Country: Brasil
Editor: Sociedade Brasileira de Pesquisa Odontológica
Rights: Aberto
Identifier DOI: 10.1590/1807-3107BOR-2016.vol30.0084
Date Issue: 2016
Appears in Collections:FOP - Artigos e Outros Documentos

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