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

Title
The effect of casein phosphopeptide amorphous calcium phosphate on the in vitro shear bond strength of orthodontic brackets
Authors
Sun-Youn Park;Jung-Yul Cha;Chung-Ju Hwang;Kyoung-Nam Kim
Issue Date
2013
Journal Title
Korean Journal of Orthodontics (대한치과교정학회지)
ISSN
2234-7518
Citation
Korean Journal of Orthodontics (대한치과교정학회지), Vol.43(1) : 23~28, 2013
Abstract
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.
URI

http://ir.ymlib.yonsei.ac.kr/handle/22282913/86604
DOI
10.4041/kjod.2013.43.1.23
Appears in Collections:
1. 연구논문 > 2. College of Dentistry > Dept. of Dental Engineering
1. 연구논문 > 2. College of Dentistry > Dept. of Orthodontics
Yonsei Authors
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