Effect of sodium hypochorite gel on shear bond strength of one-bottle adhesive systems

Authors

  • Ana Karina Barbieri Bedran Castro School of Dentistry of Piracicaba/University of Campinas
  • Cristiane Mariote Amaral School of Dentistry of Piracicaba/University of Campinas
  • Gláucia Maria Boni Ambrosano School of Dentistry of Piracicaba/University of Campinas
  • Luiz André Freire Pimenta School of Dentistry of Piracicaba/University of Campinas

DOI:

https://doi.org/10.20396/bjos.v3i9.8641752

Keywords:

Adhesive systems. Collagen removal. Shear bond strength

Abstract

The aim of this study was to determine the effect of 10% NaOCl-gel on the dentin shear bond strengths (SBS) of three hydrophilic adhesive systems. One-hundred and twenty bovine incisors were mounted, polished with 320 to 600 - grit Al2 O3 paper and randomly divided in 6 groups (n=15): G1 - Single Bond applied according to manufacturer’s instructions; G2 – 10% NaOCl gel + Single Bond; G3 - Prime & Bond 2.1 used according to manufacturer’s instructions; G4- 10% NaOClgel + Prime & Bond 2.1; G5 - Gluma One Bond used according manufacturer’s instructions; G6- 10% NaOCl-gel + Gluma One Bond. In all groups, the dentin was etched, washed and lightly dried. After acid conditioning, groups 2, 4 and 6 received one drop of 10% NaOClgel, applied with a dwell time of 60 seconds, washed and blot dried. After the adhesive systems were applied and light-cured, a restorative composite resin was inserted in a teflon bipartite matrix and cured. The SBS were measured in a universal test machine at a crosshead speed of 0.5mm/min. The mean values were analyzed by twoway ANOVA and Tukey’s tests (± £0.01). The SBS values (expressed in decreasing order, MPa ± SD) were as follows: G6=14.71 ± 4.38; G1=14.26 ± 3.95; G3=12.94 ± 5.20; G2= 12.84± 5.06; G4=10.24 ± 2.04; G5=10.14 ± 2.77. Conclusion: Collagen removal significantly increased the SBS of Gluma One Bond, but did not affect the SBS values of the other adhesives. The influence of 10% NaOCl gel in bond strength values may be dependent on the adhesive systems applied.

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Author Biographies

Cristiane Mariote Amaral, School of Dentistry of Piracicaba/University of Campinas

Possui graduação em Odontologia pela Faculdade de Odontologia de Piracicaba UNICAMP (1998), Mestrado e Doutorado em Clínica Odontológica - Dentística pela Faculdade de Odontologia de Piracicaba UNICAMP (2003). Atualmente é professora adjunta da Universidade Federal Fluminense. Tem experiência na área de materiais odontológicos, com ênfase em Dentística.

Gláucia Maria Boni Ambrosano, School of Dentistry of Piracicaba/University of Campinas

Possui graduação em Engenharia Agronômica pela Universidade de São Paulo (1983), mestrado em Ciências pela Universidade de São Paulo (1987) e doutorado em Ciências pela Universidade de São Paulo (1994). Atualmente é professora titular da área de Bioestatística da Faculdade de Odontologia/UNICAMP.

Luiz André Freire Pimenta, School of Dentistry of Piracicaba/University of Campinas

Possui graduação em Odontologia pela Universidade Federal de Minas Gerais(1987), mestrado em Odontologia (Dentística) pela Universidade de São Paulo(1991) e doutorado em Dentística Restauradora pela Universidade Estadual Paulista Júlio de Mesquita Filho(1994). Atualmente é Professor Titular da Universidade Estadual de Campinas.

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Published

2015-11-16

How to Cite

1.
Castro AKBB, Amaral CM, Ambrosano GMB, Pimenta LAF. Effect of sodium hypochorite gel on shear bond strength of one-bottle adhesive systems. Braz. J. Oral Sci. [Internet]. 2015 Nov. 16 [cited 2022 Dec. 4];3(9):465-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641752

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