Research Article
Volume 19 Issue 2 - 2020
Shear Bond Strength of Hybrid Orthodontic Brackets
Sabrina Duarte Jobin1 and Julio Pedra e Cal-Neto2*
1Private Practice, Juiz de Fora, MG, Brazil
2Orthodontics, Fluminense Federal University - UFF, Nova Friburgo, RJ, Brazil
*Corresponding Author: Julio Pedra e Cal-Neto, Orthodontics, Fluminense Federal University - UFF, Nova Friburgo, RJ, Brazil.
Received: November 29, 2019; Published: January 07, 2020


Aim: The aim of this study was to evaluate the shear bond strength of hybrid orthodontic brackets, composed of a polymeric base and a metallic body, attached to human teeth.

Materials and Methods: Forty extracted human premolars were obtained and divided into two groups of 20 each: group 1 (control), metallic bracket NU-Edge (TP Orthodontics), and group 2, NV Hybrid (TP Orthodontics). After acid etching all brackets were direct bonded with application of Orthoprimer (Morelli Orthodontic Products) and Orthobond adhesive paste (Morelli Orthodontic Products) in both groups. All products were used according to the manufacturer’s instructions. A universal testing machine was used to apply an occlusal shear force directly onto the enamel-bracket interface at a speed of 1.0 mm/min. groups were compared using Student’s t test.

Results: Mean results and standard deviations for the groups were: group 1 = 4.85 Mpa (2.46), group 2 = 10.24 Mpa (4.66). A significant difference was observed in the bond strengths of the two groups evaluated (P < .0001).

Conclusion: The use of hybrid brackets with a polymeric base has resulted in higher adhesion strength values if compared to the conventional metallic brackets.

Keywords: Acid Etching; Bonding; Brackets; Orthodontics; Shear-Bond Strength


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Citation: Sabrina Duarte Jobin and Julio Pedra e Cal-Neto. “Shear Bond Strength of Hybrid Orthodontic Brackets”. EC Dental Science 19.2 (2020): 01-05.

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