열순환이 상아질접착제처리 후 미세누출에 미치는 영향에 관한 연구
The study of the effect of thermocycling on microleakage within various dentin bonding agents
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5세대 상아질 접착제인 Adper Single bond 2.0 (3M-ESPE, USA), 6세대 상아질 접착제인 Prompt L-pop (3M-ESPE, USA), AdheSE (Ivoclar Vivadent, Liechtenstein) 를 각 상아질 접착제당 30개의 건전한 소구치 및 대구치를 선정하여 협면과 설면에 5급와동을 형성하고 복합레진을 적용하였다. 이중 절반은 열순환을 시행하지 않고 나머지 절반은 열순환을 시행하였다. 이후 메틸렌 블루를 침투시켜 시약의 침투 정도를 측정한 후 통계분석하였다. 열순환을 시행하지 않은 군과 열순환을 시행한 군을 통틀어 열순환을 시행하지 않은 상아질 군에서만 Single Bond 2.0의 미세누출의 양이 Prompt L-Pop과 AdheSE에 비하여 높았고 (p <.05) 나머지 군에서는 모두 Single Bond 2.0의 미세누출의 양이 적었다. (p <.05) 열순환 이후에 미세누출의 양이 늘어난 군은 Prompt L-Pop과 AdheSE의 상아질 군이었다.
Abstract
Three groups of dentin bonding agents (5th generation Single Bond 2.0 and two 6the generation Prompt L-Pop, AdheSE) applied to class V cavities (upper portion with enamel margin and lower portion with dentin margin) prepared at buccal and lingual portion of premolars and molars. Each groups consist of 30 teeth. Devide into two groups, one without thermocycling and the other thermocycled. After then, infiltrate methylene blue into the gap between restoration and tooth. Within non-thermocycled groups, Single Bond 2.0 group shows lesser leakage at enamel margin than other two bonding agents (p <.05) but shows more leakage at dentin margin than other two bonding agents. (p <.05) Within thermocycled groups, Single Bond 2.0 group shows lesser leakage at both enamel and dentin margins. (p <.05)
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