Low-concentrated nonvital bleaching effect on bond strength of composite resin restorations

Authors

  • Fabiana Gomes Néspoli Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.
  • Norberti Bernardineli Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.
  • Roberto Brandão Garcia Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.
  • Clovis Monteiro Bramante Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.
  • Etiene Andrade Munhoz Department of Dentistry – Health Sciences Center – Universidade Federal de Santa Catarina – Florianópolis – SC – Brazil.
  • Augusto Bodanezi Department of Dentistry – Health Sciences Center – Universidade Federal de Santa Catarina – Florianópolis – SC – Brazil.

DOI:

https://doi.org/10.14295/bds.2016.v19i3.1273

Abstract

Objective: To investigate if short-term dentin bleaching with low-concentrated substances affects the bond strength of immediate resin composite restorations. Material and Methods: The buccal surfaces of fifty molar crowns were ground for dentin exposure and randomly assigned into 5 groups (n=10), according to the following treatments: sodium perborate + water; sodium perborate + 6% hydrogen peroxide; 6% hydrogen peroxide; 35% hydrogen peroxide (positive control), or no bleaching agent (negative control). The specimens were immediately restored with resin composite. Seven days after treatments, the shear bond test was performed in a universal test machine at a crosshead speed of 0.5 mm/min. Data were analyzed using ANOVA and Tukey’s HSD test (? = 0.05). Results: The shear bond strength mean values for the negative control group were higher than all experimental and positive control groups (p < 0.000), whose differences were not statistically significant (p > 0.05). Conclusion: Short-term dentin bleaching with sodium perborate+water, 6% hydrogen peroxide, or sodium perborate mixed with 6% hydrogen peroxide reduced the shear bond strength of immediate resin composite restorations.

 

Keywords

Resins, synthetic; Hydrogen peroxide; Shear strength; Esthetics; Tooth.

 

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Author Biographies

Fabiana Gomes Néspoli, Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.

Research assistant, Department of Dentistry, Endodontics and Dental Materials

Norberti Bernardineli, Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.

Chairman, Departmente of Dentistry, Endodontics and Dental Materials

Roberto Brandão Garcia, Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.

Chairman, Department of Dentistry, Endodontics and Dental Materials

Clovis Monteiro Bramante, Department of Restorative Dentistry, Endodontics and Dental Materials – Bauru Dental School – Universidade de São Paulo – Bauru – SP – Brazil.

Chairman, Department of Dentistry, Endodontics and Dental Materials

Augusto Bodanezi, Department of Dentistry – Health Sciences Center – Universidade Federal de Santa Catarina – Florianópolis – SC – Brazil.

Assistant professor, Department of Dentistry

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Published

2016-09-29

How to Cite

1.
Néspoli FG, Bernardineli N, Garcia RB, Bramante CM, Munhoz EA, Bodanezi A. Low-concentrated nonvital bleaching effect on bond strength of composite resin restorations. BDS [Internet]. 2016 Sep. 29 [cited 2025 Aug. 21];19(3):82-7. Available from: https://ojs.ict.unesp.br/index.php/cob/article/view/1273

Issue

Vol. 19 No. 3 (2016): Jul. - Sep. / 2016 - Published September 2016

Section

Clinical or Laboratorial Research

License

Brazilian Dental Science uses the Creative Commons (CC-BY 4.0) license, thus preserving the integrity of articles in an open access environment. The journal allows the author to retain publishing rights without restrictions.

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