상아질에 대한 단일 단계 접착제의 미세인장 결합강도
Microtensile bond strength step adhesives to dentin
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초록
본 연구는 상아질에 대한 3종의 단일 단계 접착제의 미세인장 결합강도를 상호 비 교하였다. 15개의 발거된 상․하악 대구치의 교합면측에 있는 표층 상아질을 노출시 킨 후, 사용된 접착제에 따라 3개의 군 (Xeno 군-Xeno III, Prompt 군-Adper Prompt L-Pop, AQ 군-AQ Bond)으로 분류하여 복합레진을 축조하였다. 각 시편을 막대모 양으로 제작하였고, 각 군 당 20개의 시편을 이용하여 미세인장 결합강도를 측정하여 다음 과 같은 결과를 얻었다. 1. 상아질에 대한 각 군의 미세인장 결합강도는 Xeno 군에서 48.78 ± 9.83 MPa, Prompt 군에서 30.22 ± 4.52 MPa, AQ 군에서 26.31 ± 7.07 MPa로 나타났다. 2. Xeno 군은 Prompt 군과 AQ 군보다 통계학적으로 높은 미세인장 결합강도를 나타냈다 (p < 0.05). 3. Prompt 군과 AQ 군의 미세인장 결합강도 간에는 통계학적으로 유의차가 없었 다 (p > 0.05).
Abstract
This study compared the microtensile bond strength (μTBS) of three single step adhesives to dentin. Occlusal superficial dentin was exposed in fifteen human molars. They were assigned to three groups by used adhesives: Xeno group (Xeno III), Prompt group (Adper Prompt L-Pop), AQ group (AQ Bond). Each adhesive was applied to dentin surface, and composite of same manufacturer was constructed. The bonded specimens were sectioned into sticks with an interface area approximately 1 mm2, and subjected to μTBS testing with a crosshead speed of 1 mm/minute. The results of this study were as follows; 1. The μTBS to dentin was 48.78 ± 9.83 MPa for Xeno III, 30.22 ± 4.52 MPa for Adper Prompt L-Pop, and 26.31 ± 7.07 MPa for AQ Bond. 2. The mean μTBS of Xeno group was significantly higher than that of Prompt group and AQ group (p < 0.05). 3. There was no significant difference between the μTBS of Prompt group and AQ group.
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