Shear Bond Strength of Ceramic and Metallic Orthodontic Brackets Bonded with Self-etching Primer and Conventional Bonding Adhesives

Overview

Journal Electron Physician

Specialty General Medicine

Date 2017 Mar 1

PMID 28243410

Citations 6

Authors

Valiollah Arash

Fatemeh Naghipour

Mehdi Ravadgar

Ahmad Karkhah

Mohammad Saleh Barati

Affiliations

Soon will be listed here.

Abstract

Introduction: Adult patients typically require high-quality orthodontic treatment for ceramic brackets, but some clinicians remain concerned about the bond strength of these brackets. Therefore, the aim of this study was to determine the shear bond strength and de-bonding characteristics of metallic and ceramic brackets bonded with two types of bonding agents.

Methods: In an experimental study done in 2013 in Babol, Iran, 120 extracted human maxillary premolar teeth were randomly divided into four groups as follows: HM group: metallic bracket/conventional bonding agent; SM group: metallic bracket/Transbond self-etching primer; HC group: ceramic bracket/conventional bonding agent; SC group: ceramic bracket/Transbond self-etching primer. Twenty-four hours after thermocycling (1000 cycle, 5 °C-55 °C), the shear bond strength values were measured. The amount of resin remaining on the tooth surface (adhesive remnant index: ARI) was determined under a stereomicroscope. Enamel detachment index was evaluated under a scanning electron microscope. To perform statistical analysis, ANOVA, Kruskal-Wallis, and Tukey post-hoc tests were applied. The level of significance was set at p <0.05.

Results: The mean shear bond strength values (MPa ± SD) were group HM=12.59, group SM=11.15, group HC=7.7, and group SC=7.41. Bond strength differences between groups HM and SM (p=0.063) and between HC and SC (p=0.091) were not statistically significant. There were significant differences between HM and HC and between SM and SC groups (p < 0.05). Insignificant differences were found in ARI among all groups.

Conclusion: Our findings indicated that the metallic brackets had higher bond strengths in comparison with ceramic brackets. In addition, self-etching primer was able to produce fewer bonds compared with the conventional technique. Many samples showed the bracket-adhesive interface failure or failure inside the adhesive.

Citing Articles

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Influence of different acid etching times on the shear bond strength of brackets bonded to bovine enamel.

da Silva C, de Menezes Costa A, Costa A, Neves J, de Godoi A, de Goes V Saudi Dent J. 2021; 33(7):474-480.

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Condo R, Mampieri G, Cioffi A, Cataldi M, Frustaci I, Giancotti A BMC Oral Health. 2021; 21(1):350.

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Effects of plastic bracket primer on the shear bond strengths of orthodontic brackets.

Saito H, Miyagawa Y, Endo T J Dent Sci. 2021; 16(1):424-430.

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Bond Strength of Metallic or Ceramic Orthodontic Brackets to Enamel, Acrylic, or Porcelain Surfaces.

Pinho M, Manso M, Faria Almeida R, Martin C, Carvalho O, Henriques B Materials (Basel). 2020; 13(22).

PMID: 33213042 PMC: 7698487. DOI: 10.3390/ma13225197.

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