One-Bottle system 상아질접착제의 전단결합강도 해석
SHEAR BOND STREGNTHS OF ONE-BOTTLE DENTIN ABHESIVE SYSTEMS
마득상, 임성삼, 김명기, 백승학, 손호현, 김기달,
소속 상세정보
마득상 ( ) - 서울대학교 치과대학 치과보존학교실
임성삼 ( ) - 서울대학교 치과대학 치과보존학교실
김명기 ( ) - 서울대학교 치과대학 치과보존학교실
백승학 ( ) - 서울대학교 치과대학 치과보존학교실
손호현 ( ) - 서울대학교 치과대학 치과보존학교실
김기달 ( ) - 서울대학교 치과대학 치과보존학교실
KMID : 0362319990240040546
Abstract
In order to evaluate the effectiveness of One-bottle dentin adhesive system , the shear bond strengths of two fourth generation dentin adhesive systems and two One-bottle systems to the occlusal dentin of the freshly extracted third molars were measured by the regulation of the ISO TR 11405. The fourth generation dentin adhesive systems used in this study were Scotchbond Multi-Purpose Plus and All-Bond 2, and the One-bottle systems were Single Bond and One-Step. The effects of the thickness of hybrid layer and adhesive layer, the diameter of resin tag and the ratio between the diameter of resin tag and that of dentinal tubule were analyzed as the contributing factors of the shear bond strength of dentin bonding systems from the Scanning Electron Microscopic images.
The results were as follows:
1. The shear bond strengths of Scotchbond Multi-Purpose, All-Bond 2, and Single Bond were 16.98±3.40 MPa, 15.10±2:77 MPa and 15.05±3.18 MPa, respectively. There were no statistical differences (p>0.05).
2. But, the shear bond strength of One-Step were significantly lower than those of the other groups (11.81±1.95 MPa, p<0.05).
3. The thicknesses of hybrid layer and adhesive layer of One-Step were significantly thinner than those of the other groups(p<0.05). The differences of the diameter of resin tag(p=0.0685) and the ratio between the diameter of resin tag and that of dentinal tubule (p = 0.2401) were not significant among all the material groups.
4. The thickness of hybrid layer and adhesive layer might be considered as contributing factors of the shear bond strengths of dentin bonding systems, but the diameter of resin tag and the ratio between the diameter of resin tag and that of dentinal tubule might not.
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