Restorative Dentistry and Endodontics
- Volume 23 Issue 1
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- Pages.401-412
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- 1998
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- 2234-7658(pISSN)
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- 2234-7666(eISSN)
REGIONAL MICRO-SHEAR BOND STRENGTH TO DENTIN:EFFECTS OF DENTINAL HARDNESS, POSITION, AND REMAINING DENTIN THICKNESS
상아질의 경도, 위치 및 잔존 상아질 후경이 상아질에 대한 부위별 미세 전단결합강도에 미치는 영향
- Hwang, Seon-Seong (Dept. of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
- Im, Mi-Kyung (Dept. of Conservative Dentistry, College of Dentistry, Wonkwang University) ;
- Lee, Yong-Keun (Dept. of Conservative Dentistry, College of Dentistry, Wonkwang University)
- Published : 1998.04.07
Abstract
The aim of this study was to measure the regional micro-shear bond strength of dentin bonding agents to dentin, and to investigate the relationship between the micro-shear bond strength and two dentinal characteristics ; Vickers hardness and remaining dentin thickness. Twenty-four freshly extracted, noncarious human molars were selected for this study. The materials tested in this study consisted of two commercially available dentin bonding agents (MAC-BOND, ONE-STEP) and two restorative light-cured composite resins (AELITEFIL, Z100). The occlusal or side surface of tooth crown was sectioned to expose dentin, and the exposed surface was finally polished with # 600 sandpaper. Four groups of application methods were used combining the filling materials and the dentin bonding agents. The composite resin-attached tooth specimens were embeded in a cold cure acrylic resin, and were cut with a low speed diamond saw to the dimension of 1mm
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