Shear bond strength of a new composite for orthodontic use under different situations

Authors

  • Matheus Melo Pithon Universidade Federal de Alfenas (Unifal)
  • Rogério Lacerda dos Santos Universidade Federal de Alfenas (Unifal

DOI:

https://doi.org/10.20396/bjos.v8i1.8642326

Keywords:

Shear strength, Dental bonding, Orthodontic brackets

Abstract

Aim: The aim of this study was to evaluate the shear bond strength of metallic orthodontic brackets bonded with Eagle Bond composite under different enamel surface conditions. Methods: Ninety bovine permanent lower incisors were divided into six groups (n = 15). In Group 1 (control) and Group 2 the brackets were bonded with XT primer/Transbond XT composite (3M Unitek) and Eagle Bond primer/Eagle Bond composite (American Orthodontic), respectively, according to the manufacturers’ recommendations. In the other groups, the brackets were bonded with Eagle Bond composite as follows: Group 3 had an enamel surface treated with Transbond Plus SelfEtching Primer; Group 4, bonding without application of Eagle Bond primer; Group 5, use of homogenized Eagle Bond composite; and Group 6, Eagle Bond primer/Eagle Bond composite applied on saliva/blood-contaminated dental surface. After bonding of the brackets, all specimens were tested in shear strength in an Emic universal testing machine at a crosshead speed of 0.5 mm/min. Results: There were no statistically significant differences among the groups (p > 0.05). A larger number of fractures were detected at the bracket/composite interface by the analyses of the Adhesive Remnant Index scores. Conclusions: It may be concluded that the modifications on the enamel surface did not compromise the shear bond strength of the composite Eagle Bond.

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Author Biographies

Matheus Melo Pithon, Universidade Federal de Alfenas (Unifal)

Specialist in Orthodontics, Faculdade de Odontologia, Universidade Federal de Alfenas (Unifal), Alfenas, MG, Brazil; Master and doctorate student, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil

Rogério Lacerda dos Santos, Universidade Federal de Alfenas (Unifal

Specialist in Orthodontics, Faculdade de Odontologia, Universidade Federal de Alfenas (Unifal), Alfenas, MG, Brazil; Master and doctorate student, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil

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Published

2015-12-17

How to Cite

1.
Pithon MM, Santos RL dos. Shear bond strength of a new composite for orthodontic use under different situations. Braz. J. Oral Sci. [Internet]. 2015 Dec. 17 [cited 2022 Oct. 6];8(1):34-7. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8642326

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