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Bond Strength of Self-adhesive Resin Cement to Different Root Perforation Materials.
Lemos Martins Sicuro, Stephanie; Gabardo, Marilisa Carneiro Leão; Castiglia Gonzaga, Carla; Dias Morais, Nathaly; Baratto-Filho, Flares; Correr Nolasco, Gisele Maria; Leonardi, Denise Piotto.
Afiliação
  • Lemos Martins Sicuro S; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
  • Gabardo MC; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil. Electronic address: marilisagabardo@e-odonto.com.
  • Castiglia Gonzaga C; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
  • Dias Morais N; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
  • Baratto-Filho F; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
  • Correr Nolasco GM; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
  • Leonardi DP; Department of Dentistry, Positivo University, Curitiba, Paraná, Brazil.
J Endod ; 42(12): 1819-1821, 2016 Dec.
Article em En | MEDLINE | ID: mdl-27769677
INTRODUCTION: Different materials have been used for intervening in root perforations. These materials are often in contact with resin cements used for cementation of intraradicular retainers. The aim of this study was to evaluate the bond strength of self-adhesive resin cement to different materials used to treat root perforations (mineral trioxide aggregate [MTA], Portland cement [PORT], and glass ionomer cement [GIC]). METHODS: Four discs (10 × 1 mm) of each material (the MTA, PORT, and GIC groups) were embedded into polyvinyl chloride tubes using acrylic resin, ground, and polished until a flat surface was exposed. Afterward, 4 silicone molds were used to prepare self-adhesive resin cement cylinders (0.7 × 1 mm) on each disc surface (N = 16). The specimens were stored in deionized water at 37°C for 24 hours and subjected to a microshear test. Then, the failure modes were examined. Data were submitted to statistical analysis (α = 0.05). RESULTS: The MTA and GIC groups showed significantly higher microshear bond strength values (3.36 ± 1.56 and 2.90 ± 1.49 MPa, respectively) than the PORT group (1.39 ± 0.77 MPa) (P < .05). Only adhesive failure modes were observed. CONCLUSIONS: When PORT was used as a root perforation material, GIC should be used as a base over it to improve shear bond strength with self-adhesive resin cement.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Raiz Dentária / Adesivos Dentinários / Cimentos de Resina / Resistência ao Cisalhamento Idioma: En Revista: J Endod Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Raiz Dentária / Adesivos Dentinários / Cimentos de Resina / Resistência ao Cisalhamento Idioma: En Revista: J Endod Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos