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http://dx.doi.org/10.4041/kjod.2009.39.5.320

Effect of metal primer and thermocycling on shear bonding strength between the orthodontic bracket and gold alloy  

Lee, Young-Kee (Department of Orthodontics, College of Dentistry, Yonsei University)
Cha, Jung-Yul (Department of Orthodontics, College of Dentistry, Yonsei University)
Yu, Hyung-Seog (Department of Orthodontics, College of Dentistry, Oral Science Research Institute, The Institute of Cranio-facial Deformity, Yonsei University)
Hwang, Chung-Ju (Department of Orthodontics, College of Dentistry, Oral Science Research Institute, The Institute of Cranio-facial Deformity, Yonsei University)
Publication Information
The korean journal of orthodontics / v.39, no.5, 2009 , pp. 320-329 More about this Journal
Abstract
Objective: The aim of this study was to evaluate the effect of metal primers and thermocycling on shear bond strength between the orthodontic bracket and gold alloy. Methods: For this study, 80 specimens made of dental gold alloy were divided into 8 groups based on the combination of metal primers (none, Alloy primer, Metaltite, V-primer) and thermocycling (with and without thermocycling). Shear bond strength testing was performed with a universal testing machine. Bond failure sites were classified by a modified ARI (Adhesive Remnant Index) score. Results: All metal primer treated groups showed a significantly higher shear bond strength than the only sandblasting treated group without thermocycling (p < 0.05). There were no significant differences on shear bond strength in the groups with thermocycling (p > 0.05). Bond failure sites of the metal primer treated group without thermocycling occurred at gold alloy/adhesive interface, whereas there were no differences on bonding failure sites in the groups with thermocycling. Conclusions: These findings suggest that using metal primer on gold alloy enhances the initial bracket bond strength. But, this effect was not shown with thermocycling.
Keywords
Bond strength; Bracket; Gold alloy; Metal primer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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