원문정보
Effect of Surface Condition on the Bonding Characteristics of 3Y-ZrO2-Metal Bracket System
초록
영어
Purpose: To investigate shear bonding strength between dental zirconia ceramics with different surface treatment and metal bracket.
Methods: Zirconia ceramics(LAVA, 3M ESPE, USA) were divided to 4 groups according to their surface treatment; no surface treatment(G1), sand blasting(G2), silane coating(G3), and sand blasting+silane coating(G4).
Specimens were bonded to metal bracket using resin bond(TransbondTMXT, 3M Unitek, USA). Shear bond strength was measured using universal test machine(3366 INSTRON. U.S.A) with cross head speed of 1 mm/min.
Microstructural investigation for fracture surface was performed after shear test.
Results: Shear bonding strengths of single surface treatment groups (G2 and G3) were higher than no treatment group(G1). Combined Treatment Group (G4) showed the highest shear bond strength of 9.15 . Microstructural observation shows that higher shear bonding strength was obtained when debonding was occurred at metal bracket/resin interface rather than zirconia ceramic/resin interface.
Conclusion: Surface treatment of zirconia is necessary to obtain higher bonding strength. Combined treatment can be more effective when surface the surfaces are kept clean and homogeneous.
목차
Ⅰ. 서론
Ⅱ. 연구 방법
1. 연구 재료
2. 연구방법
Ⅲ. 결과
1. 전단접착강도와 브라켓 탈락 양상
2. 파단면의 현미경 관찰 결과
Ⅳ. 고찰
Ⅴ. 결론
참고문헌