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J Korean Acad Pediatr Dent. 2007;34(4): 579-589.
THE SHEAR BOND STRENGTH OF DENTAL ADHESIVES ON PRIMARY AND PERMANENT TEETH
Jin-Young Choi1, Nam-Ki Choi1, Yeong-Joon Park2, Choong-Ho Choi3, Kyu-Ho Yang1
1Department of Pediatric Dentistry, School of Dentistry, Chonnam National University
2Departmet of Dental Materials, School of Dentistry, Chonnam National University
3Department of Preventive Dentistry, School of Dentistry, Chonnam National University, Dental Research Institute and Second stage of BK21
Corresponding Author: Nam-Ki Choi ,Tel: 82-62-220-5476, Email: nkchoi@chonnam.ac.kr
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ABSTRACT
The objective of this study was to compare the shear bond strengths of five adhesive systems to the enamel and dentin of primary and permanent teeth. Fifty noncarious primary and fifty permanent teeth were collected and stored in an 0.1% thymol solution at room temperature after extraction. The tested adhesives were: Adper Scotchbond Multi-purpose Plus Adhesive (SM) Adper Single bond 2 (SB), Clearfil SE Bond (SE), Adper Prompt L-Pop (PL), GBond (GB). For the shear bonding test, the labial and lingual surfaces of primary and permanent teeth were used. To obtain a flat surface, the labial and lingual surfaces of the teeth were sanded on SiO2 with number 600 grit and then divided into 20 groups of 10 surfaces each. All samples were theromocycled in water 5℃ and 55℃ for 1000 cycles. The results were as follows: 1. For primary enamel, shear bond strengths of SM and SB were significantly higher than that of SE and also SM, SB, and PL were higher than GB(p<0.05). 2. For primary dentin, there were no significant differences among the shear bond strengths of any other bonding systems except differnece between SE and GB. 3. For permanent enamel, SB showed significantly higher mean shear bond strength than those of any other bonding systems(p<0.05). 4. For permanent dentin, SM showed significantly higher mean shear bond strength than that of PL and GB(p<0.05). 5. Between the primary enamel and dentin, there were significant differences in SM, SB, and GB, whereas there was statistically significant difference in PL between the permanent enamel and dentin(p<0.05). 6. Between the primary and permanent teeth on enamel, there were no significant differences among all bonding systems, whereas there were statistically significant differences in SM and SB between the primary and permanent teeth on dentin(p<0.05).
Keywords: Composite resin | Dental adhesive system | Shear bond strength
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