탈락된 브라켓의 표면처리가 재접착시 전단접착강도에 주는 영향

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Dentists are commonly faced with the decision of what to do with detached or inaccurately positioned brackets that require re-positioning during treatment. One solution is to reused the brackets without compensate for bond strength. The purpose of this study was to evaluate the effects of the surface treatments of the detached metal bracket on the shear bond strength(SBS) of orthodontic brackets bonded to bovine.
Eighty detached brackets without any damage were selected and twenty new brackets (CTL) were prepared. Twenty used brackets, which had less than 5% residual adhesives in the base, were not treated, but cleaned with ultrasonic cleaner using ethanol (EXP-1). Used brackets were ground with green stone until mesh patterns were exposed (EXP-2), were sandblasted with alumina particles (EX-3), and were sandblasted subsequent to green stone grinding (EXP-4). One hundred bovine teeth were used for bracket bonding test. SBS test and adhesive reminant index (ARI) evaluation were performed, and the data were analyzed using ANOVA test (p = 0.05).
EXP-1 showed the significantly low SBS (8.24 MPa, p<0.05), but higher bond strength than the clinically required bond strength. EXP-2 showed the lowest SBS (6.59 MPa) among experimental groups. EXP-3 showed the highest SBS (11.99 MPa), but no significantly different with CTL (11.50 MPa). Average SBS of EXP-4 was 10.20 MPa, it was not significantly different with CTL or EXP-3.
Alternative Title
Effect of surface treatments of detached bracket surface on the shear bond strength
Alternative Author(s)
Lee, Chang Yong
일반대학원 치의학과
Awarded Date
Table Of Contents
I. 서론 1

II. 재료 및 방법 4
1. 탈락된 브라켓의 재생처리 4
2. 우치 시편 준비 및 브라켓 접착 6
3. 전단접착강도 (SBS) 측정 7
4. 접착제 잔류지수 (ARI) 평가 8

III. 연구결과 9

IV. 총괄 및 고찰 12

V. 결론 16

참고문헌 17
조선대학교 대학원
이창용. (2016). 탈락된 브라켓의 표면처리가 재접착시 전단접착강도에 주는 영향.
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General Graduate School > 3. Theses(Master)
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