Shear Bond Strength of Three Different Bonding Systems for Orthodontic Brackets

Authors

  • Luís Filipe Siu Lon São Paulo State University
  • Luegya Amorim Henriques Knop São Paulo State University
  • Ricardo Lima Shintcovsk São Paulo State University
  • Odilon Guariza Filho Pontifical Catholic University of Paraná
  • Dirceu Barnabé Raveli São Paulo State University

DOI:

https://doi.org/10.20396/bjos.v17i0.8652883

Keywords:

Dental bonding. Shear strength. Dental enamel.

Abstract

Aim: The objective of this study was to compare the efficiencies of different adhesive systems used to bond orthodontic brackets as well as the fracture pattern during debonding on bovine teeth. Methods: The sample included 45 specimens assigned to 3 groups according to the adhesive system applied: Group I: Transbond XT (3M Unitek®, Monrovia/CA -USA), Group II: Orthocem (FGM® Joinville/SC-BR), and Group III: Orthobond (Morelli®, Sorocaba/SP-BR). For this purpose, metal brackets were bonded to bovine teeth following the instructions from each manufacturer. The specimens were subjected to a shear test to assess bond strength (BS). Finally, after debonding, the adhesive remnant index (ARI) was estimated. Results: The average shear strength for a tooth bonded using the adhesive system Transbond XT was 16.39 MPa, while it was 18.08 Mpa for Orthocem and 7.28 Mpa for Orthobond; The Tukey test revealed no statistically significant differences between groups I and II (p < 0.01) and group III differed statistically from groups I and II. Conclusion: In conclusion, both adhesive systems Transbond XT and Orthocem attained higher bond strength values than Orthobond; the fracture pattern was similar for all adhesive systems applied.

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Author Biographies

Luís Filipe Siu Lon, São Paulo State University

Department Of Orthodontics

Luegya Amorim Henriques Knop, São Paulo State University

Department Of Orthodontics

Ricardo Lima Shintcovsk, São Paulo State University

Department Of Orthodontics

Odilon Guariza Filho, Pontifical Catholic University of Paraná

Department Of Orthodontics

Dirceu Barnabé Raveli, São Paulo State University

Department Of Orthodontics

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Published

2018-07-05

How to Cite

1.
Lon LFS, Knop LAH, Shintcovsk RL, Guariza Filho O, Raveli DB. Shear Bond Strength of Three Different Bonding Systems for Orthodontic Brackets. Braz. J. Oral Sci. [Internet]. 2018 Jul. 5 [cited 2022 Dec. 6];17:e18138. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8652883

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