광중합형 레진시멘트를 사용한 치열교정용 브라켓 접착 시 접착제 사용 유무가 산 부식한 법랑질의 전단접착강도에 미치는 영향
Effect of applying adhesive after enamel etching on the shear bond strength of orthodontic brackets using light curing resin cements
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초록
목적: 본 연구의 목적은 접착제를 적용하지 않고 치열교정용 브라켓을 접착할 수 있는 레진시멘트의 법랑질에 대한 접착강도를 접착제를 적용한 경우와 비교하기 위함이다. 연구 재료 및 방법: 시편을 Transbond XT, GC Ortho Connect 및 Orthomite LC의 3개의 실험군으로 나누고, 노출된 법랑질 표면을 2분획으로 나누어 한 분획에는 37% 인산으로, 다른 한 분획에는 37% 인산 및 접착제 혹은 유니버셜 접착제로 표면 처리를 하였다. 치열교정용 브라켓에 3 종류의 시멘트를 각각 도포하고 접착을 한 뒤 전단접착강도를 측정하였다. 결과: Transbond XT와 Orthomite LC는 각각 접착제와 유니버셜 접착제를 적용한 후 치열교정용 브라켓을 접착할 경우 전단접착강도가 유의하게 증가하였다. 결론: Transbond XT와 Orthomite LC에서 산 부식 후 접착제의 적용이 치열교정용 브라켓의 전단접착강도를 향상시킬 것으로 기대한다.
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.
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