Effect of Surface Conditioning Methods on Shear Bond Strength of Various Base/Lining Materials to Composite

국문 초록 (Abstract)

복합레진의 중합수축에 의한 임상적인 문제점을 해결하기 위해, 베이스 또는 라이너의 적용이 추천되고 있다. 이 때 베이스 또는 라이너와 복합레진 사이의 강하고 내구성 있는 접착이 중요하다. 본 연구에서는 4가지의 서로 다른 표면처리방법(10% 폴리아크릴산, 32% 인산, 4% 불산, 샌드블라스팅)을 임상에서 사용하고 있는 4가지의 베이스/라이너(GlasIonomer Base Cement, GB; Fuji II LC Improved, FL; Ionosit, IS; Aelitflo, AF)에 적용한 후 복합레진을 접착시켜 전단접착강도를 측정하였다(crosshead speed : 1 mm/min). 또한 파절양상을 평가하고, 주사전자현미경을 이용하여 전처리된 각 재료의 표면변화를 관찰하였다. AF 군과 IS 군에서 FL 군과 GB 군에 비해 유의하게 높은 전단결합강도를 보였으며(P<0.05), AF군과 IS군 사이에서는 통계학적으로 유의한 차이를 보이지는 않았다. GB군은 인산 처리 시 통계학적으로 유의한 접착강도의 증가를 나타내었다. FL, IS, AF 군은 별다른 처리를 하지 않은 경우 가장 높은 접착강도를 보였다. 향후 여러 종류의 접착제를 사용한 조건에서 베이스/라이너 재료와 복합레진과의 접착을 평가하는 연구가 필요할 것으로 생각된다.

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