Adhesion of a self-etching adhesive to caries-affected dentin treated with different methods for caries removal: a preliminary study

Authors

  • Adriana Bona Matos Department of Restorative Dentistry – School of Dentistry – University of São Paulo – Brazil.
  • Cynthia Soares de Azevedo Department of Restorative Dentistry – School of Dentistry – University of São Paulo – Brazil.
  • Livia Tosi Trevelin Department of Restorative Dentistry – School of Dentistry – University of São Paulo – Brazil.
  • Ana Cecília Correa Aranha Department of Restorative Dentistry – School of Dentistry – University of São Paulo – Brazil.

DOI:

https://doi.org/10.14295/bds.2016.v19i4.1285

Abstract

Objective: The aim of this study was to evaluate the adhesion of a self-etching system to caries-affected dentin (CAD) and sound dentin (SD) after different caries removal techniques by using microtensile bond strength test (?TBS). Materials and Methods: Twenty-four extracted human molars with coronal carious lesions were used. The samples were randomly divided into 5 groups, according to caries removal method: G1 - negative control (no removal); G2 abrasive disc; G3 – slow speed steel bur; G4 - Nd:YAG laser (energy density 21.2J/cm2); G5 - Er:YAG laser (energy density 80.24J/cm2). SD and  CAD/ infected dentin substrates were tested.  Self-etch system (Clearfil SE Bond) was applied and resin crowns were built up. Results: One-way ANOVA showed statistically significant difference between experimental groups (p<0.001), with significantly lower results for infected dentin (G1), when compared to all other experimental groups. A statistically significant higher bond strength value was observed for SD irradiated with Er:YAG laser when compared to CAD. For bur and Nd:YAG laser specimens, SD and CAD showed the same bonding performance. Conclusion: infected dentin is not an adequate substrate for bonding; Nd:YAG laser and steel burs showed the same bonding performance for both SD and CAD; while both dentins, when irradiated by Er:YAG laser, did not adequately interact with self-etching system resulting in poor adhesion.

Keywords: Er:YAG laser; Nd:YAG laser; Infected dentin; Dentin.

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Published

2016-11-29

How to Cite

1.
Matos AB, de Azevedo CS, Trevelin LT, Aranha ACC. Adhesion of a self-etching adhesive to caries-affected dentin treated with different methods for caries removal: a preliminary study. BDS [Internet]. 2016 Nov. 29 [cited 2025 Aug. 21];19(4):32-41. Available from: https://bds.ict.unesp.br/index.php/cob/article/view/1285

Issue

Vol. 19 No. 4 (2016): Oct. - Dec. / 2016 - Published November 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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