도말층이 글라스 아이오노머 시멘트의 결합강도에 미치는 영향
The effect of the smear layer on the bonding strength of glass ionomer cement to dentin surface
김용현, 김성환, 박경민,
소속 상세정보
김용현 ( ) - 경희대학교 식품공학과
김성환 ( ) - 경희대학교 식품공학과
박경민 ( ) - 경희대학교 식품공학과
KMID : 0358919920190020570
Abstract
The purpose of this study was to evaluate the effects of the dentin surface roughness, smear layer and surface conditioner on the bond strength of a glass ionomer cement in dentin of primary teeth.
So, the surface roughness after various treatment, tensile bond strength, and surface texture of dentin surface before and after fracture were examined.
@ES The result of this study were as follows:
@EN 1. The surface roughness value was the highest in diamond bur group, next came the carbide ur group, control group (P<0.05). By the treatment of surface conditioner, the roughness values were deacreased in the same order.
2. The tensile bond stregth was the lowest in diamond bur group (p<0.05). and the highest in 600 grit silicone carbide paper and conditioner treated group (P<0.05). And, the rougher the dentin surface, the lower the bond strength was observed.
3. The dentin surface after finishing procedure, the grinding grooves and the smear layer were the most prominent in diamond bur group. And in every group, surface were smoothened and smear layers were removed with the treatment of surface
conditioner,
but smear plugs were remained.
4. On the fractured denting surfaces, as the bond strength increased, the more conhesive fracture pattern was examined, and as the bond strength decrease the more adhesive fracture pattern was examined.
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