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The effect of casein phosphopeptide amorphous calcium phosphate on the in vitro shear bond strength of orthodontic brackets

 Sun-Youn Park  ;  Jung-Yul Cha  ;  Kyoung-Nam Kim  ;  Chung-Ju Hwang 
 Korean Journal of Orthodontics (대한치과교정학회지), Vol.43(1) : 23-28, 2013 
Journal Title
 Korean Journal of Orthodontics  (대한치과교정학회지) 
Issue Date
OBJECTIVE: The purpose of this study was to evaluate the effect of casein phosphopeptide amorphous calcium phosphate (CPP-ACP) on the shear bond strength (SBS) of brackets bonded to non-demineralized teeth with either phosphoric acid etching or self-etching primer. METHODS: Sixty human premolars were randomly assigned to 1 of 4 treatment groups (n = 15 each): phosphoric acid etching (group 1); self-etching primer (group 2); CPP-ACP for 2 weeks + phosphoric acid etching (group 3), and CPP-ACP for 2 weeks + self-etching primer (group 4). After bonding of the maxillary premolar metal brackets, specimens were subjected to shear forces in a testing machine. Scanning electron microscopy was used to observe etching patterns on the enamel surfaces of all teeth. A 2-way analysis of variance was used to test for effects of CPP-ACP and etching system on SBS. RESULTS: Significantly higher mean SBSs were observed in groups subjected to phosphoric acid etching (i.e., groups 1 and 3; p < 0.05). On the other hand, SBSs did not appear to be influenced by CPP-ACP (i.e., groups 3 and 4; p > 0.05). We observed a uniform and clear etched pattern on the enamel surface of the phosphoric acid etching groups. CONCLUSIONS: CPP-ACP does not significantly affect the SBS of orthodontic brackets bonded to non-demineralized teeth, regardless of which adhesive method is used to bond the brackets.
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1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Dental Biomaterials and Bioengineering (치과생체재료공학교실)
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실)
Yonsei Authors
김경남(Kim, Kyoung Nam)
차정열(Cha, Jung Yul)
황충주(Hwang, Chung Ju)
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