J Dent Rehabil Appl Sci.  2021 Dec;37(4):209-216. 10.14368/jdras.2021.37.4.209.

Effect of applying adhesive after enamel etching on the shear bond strength of orthodontic brackets using light curing resin cements

Affiliations
  • 1Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea

Abstract

Purpose
The purpose of this study is to compare the shear bond strength of resin cement for orthodontic brackets without applying an adhesive primer, to the case of applying an adhesive primer.
Materials and Methods
The specimens were divided into three experimental groups, Transbond XT, GC Ortho Connect and Orthomite LC, and the enamel surface was divided into two sections, one with 37% phosphoric acid and the other with 37% phosphoric acid and an adhesive primer or universal adhesive. Each of three types of cement was applied to orthodontic bracket, and after bonding, the shear bond strength was measured.
Results
Transbond XT and Orthomite LC significantly increased shear bond strength when orthodontic brackets were bonded after applying an adhesive primer and universal adhesive, respectively.
Conclusion
It is expected that application of an adhesive primer or universal adhesive after acid etching will improve shear bond strength of orthodontic brackets in Transbond XT and Orthomite LC.

Keyword

enamel; orthodontic; bracket; resin cement; shear bond strength
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