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KMID : 0358920060330040661
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Journal of the Korean Academy of Pedodontics
2006 Volume.33 No. 4 p.661 ~ p.672
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STUDY ON THE SHEAR BOND STRENGTH OF ALL-IN-ONE DENTIN BONDING SYSTEM
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Park Hyung-Joo
Yoo Seung-Hoon
Kim Jong-Soo
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Abstract
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This study was performed to compare the shear bond strength of AQ Bond Plus {TM} with AQ Bond {TM} and Single Bond {TM}. Also by observing the fractured interface under scanning electro-microscope, the fracture pattern and the quality of hybrid layer were analyzed. The possibility of clinical application of all-in-one system which has an advantage to reduce chair time for children with difficult behavior pattern was evaluated, The results obtained are as follows ;
1. There was no significant difference between AQ Bond{TM} and AQ Bond Plus{TM} in shear bond strength and Single Bond showed the highest bond strength with statistical significant difference (p<0.05).
2. Adhesive fracture pattern was mainly observed in both enamel/dentin in AQ Bond {TM} and AQ Bond Plus {TM} group while Single Bond group showed equal numbers for cohesive and adhesive pattern.
3. Under scanning electro-microscope, resin tags observed in AQ Bond {TM} and AQ Bond Plus {TM} were very weak and tangled while strong and thick tags were shown with many lateral branches in Single Bond.
Careful case selection and accurate clinical application is recommended when using AQ Bond {TM} and AQ Bond Plus {TM}considering the result showing its weaker strength than Single Bond {TM}.
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KEYWORD
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All-in-one system, Dentin bonding system, Bovine tooth, Shear bond strength, Resin tag, Hybrid layer
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