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J Korean Acad Pediatr Dent. 2007;34(4): 560-568.
COMPARATIVE STUDY ON THE SHEAR BOND STRENGTH OF ALL-IN-ONE DENTIN BONDING SYSTEM APPLIED TO PRIMARY TEETH
Dong-Cheol Kim, Jong-Soo Kim, Seung-Hoon Yoo
Department of Pediatric Dentistry, School of Dentistry, Dankook University
Corresponding Author: Jong-Soo Kim ,Tel: 82-41-550-1931, 2, Fax: 82-41-555-2329, Email: jskim@dku.edu
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ABSTRACT
This study was performed to compare the shear bond strength of primary enamel & dentin treated by AQ Bond PlusTM and G BondTM, recently developed 6th generation dentin bonding system, to that of Single BondTM being widely used. Also by observing the resin tag under scanning electron microscope, Resin tags of each material were also observed under scanning electron microscope and compared to one another. 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. No statistically significant difference between groups was found in shear bond strength of primary enamel. 2. In primary dentin, the shear bond strength of AQ Bond PlusTM was 1.15 ± 0.37 MPa, G BondTM was 1.69 ± 0.74 MPa and Single BondTM was 0.56 ± 0.11 MPa. There were no statistical difference between AQ Bond PlusTM and G BondTM and between G BondTM and Single BondTM, whereas statistically significant difference was found between AQ Bond PlusTM and Single BondTM. 3. Under scanning electron microscope, resin tags observed in AQ Bond PlusTM and G BondTM were very weak and tangled while strong and thick tags were shown with many lateral branches in Single BondTM. The result of the present study coupled with the advantages of less working time over the previous generation suggests that All-in-One system might be effectively used in adhesive dental procedures for primary teeth.
Keywords: All-in-one system | Dentin bonding system | Primary tooth | Shear bond strength | Resin tag
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