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혈액 오염 환경 하에서 접착된 교정용 브라켓의전단 강도에 관한 연구

A study of shear bond strength of orthodontic bracket under blood-contaminated conditions

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주제분류치의학

초록

본 연구는 매복된 치아를 교정력을 이용하여 견인할 때 견인의 대상이 되는 치아를 개창술로 노출시켜 브라켓을 부착하는 과정에서 혈액 오염이 일어날 수 있는 상황을 실험실 환경에서 재현한 다음, 이와 같은 오염의 유무와 접착제의 종류가 브라켓의 전단 강도에 미치는 영향을 평가하기 위해 시행하였다. 본 연구의 결과 글래스 아이오노머의 전단 강도는 레진에 비해 모든 조건에서 낮은 수치를 보였으나 혈액 오염이 없거나 광조사 직전 오염된 경우 임상적으로 교정적 정출술에 적절한 전단 강도를 나타내었다. 두 재료 모두 접착제 적용 전에 치면이 혈액에 오염되었을 경우 다른 조건에 비해 현저하게 낮은 전단 강도를 보였으나 광조사 직전에 혈액에 오염되었을 경우에는 오염되지 않은 대조군과 유의한 차이가 없었다. 이상의 연구 결과, 개창술을 통해 브라켓을 부착할 경우 접착제 적용 직전 혈액 오염을 주의한다면 산부식 과정이 생략되어 술식이 비교적 간단하고 접착 파절 후 치면에 접착제가 남아 있지 않은 장점을 지닌 글래스 아이오노머 접착제의 사용을 추천할 수 있을 것으로 사료된다.

Abstract

This study was experienced in order to obtain the shear bond strength of orthodontic bracket adhesives under the blood contamination that can be occurred during the procedure of bracket bonding under window opening surgery. As a result of this study, shear bond strength of all glass ionomer groups were lower than resin cement groups. However, the strength of uncontaminated and post-contaminated group of glass ionomer was strong enough to perform an orthodontic forced eruption. This study revealed that during a window opening surgery, glass ionomer without etching procedure is available in order to bond a bracket if surface of teeth is not pre-contaminated by blood before the adhesive application Both simple procedure and less adhesives remnant after bonding failure could make light-cured glass ionomer cement the ultimate choice for bracket bonding.

참고문헌 (41)

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