Shear bond strength of metallic brackets bonded with a new orthodontic composite

Authors

  • Fábio Lourenço Romano
  • Américo Bortolazzo Correr Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)
  • Lourenço Correr Sobrinho Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)
  • Maria Beatriz Borges de Araújo Magnani Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)
  • Vânia Célia Vieira de Siqueira Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

DOI:

https://doi.org/10.20396/bjos.v8i2.8642215

Keywords:

Composite resins, Shear strength, Orthodontic brackets, Orthodontics

Abstract

Aim: The aim of this study was to assess the shear bond strength of orthodontic brackets in different enamel surfaces using the Transbond Plus Color Change composite (TPCC-3M Unitek), and to analyze the Adhesive Remnant Index (ARI). Methods: Seventy-two human premolars were divided into six groups (n = 12), as follows: Group 1(control) - Transbond XT conventional; in Groups 2 to 6, TPCC was used under the following enamel treatment conditions: phosphoric acid and XT-primer; Transbond Plus Self-Etching Primer (TPSEP); phosphoric acid only; phosphoric acid, XT-primer and saliva; and TPSEP and saliva, respectively. Twenty-four hours after bonding, the brackets were debonded with an Instron machine at a crosshead speed of 0.5 mm/min, and ARI was evaluated by using a stereoscopic magnifying glass. Results: The mean shear strength values (MPa) for Groups 1 to 6 were 24.6, 18.7, 17.5, 19.7, 17.5 and 14.8, respectively. Data were submitted to ANOVA and Tukey’s test (α = 0.05). Group 1 had significantly higher shear bond strength values than Groups 3, 5, and 6 (p < 0.05), but did not differ significantly from Groups 2 and 4 (p > 0.05). No statistically significant differences (p > 0.05) were found between Groups 2, 3, 4, 5 and 6. Conclusions: Bracket bonding using TPCC showed adequate adhesion for clinical use, and the type of enamel preparation had no influence.

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Author Biographies

Fábio Lourenço Romano

DDS, MS, PhD, Graduate Student, Department of Pediatric Dentistry, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas (Unicamp), Campinas (SP)

Américo Bortolazzo Correr, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

DDS, MS, PhD, Graduate Student, Department of Restorative Dentistry, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

Lourenço Correr Sobrinho, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

DDS, MS, PhD, Professor, Department of Restorative Dentistry, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

Maria Beatriz Borges de Araújo Magnani, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

DDS, MS, PhD, Assistant Professor, Department of Pediatric Dentistry, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

Vânia Célia Vieira de Siqueira, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

DDS, MS, PhD, Assistant Professor, Department of Pediatric Dentistry, Faculdade de Odontologia de Piracicaba, Unicamp, Campinas (SP)

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Published

2015-12-14

How to Cite

1.
Romano FL, Correr AB, Correr Sobrinho L, Magnani MBB de A, Siqueira VCV de. Shear bond strength of metallic brackets bonded with a new orthodontic composite. Braz. J. Oral Sci. [Internet]. 2015 Dec. 14 [cited 2022 Oct. 5];8(2):76-80. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642215

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