수종의 산성용액이 교정용 브라켓의 전단결합강도에 미치는 영향
The Effect of Various Acidic Solutions on the Shear Bond Strength of Orthodontic Bracket
안진수, 박혜진, 강승택, 임용규, 이동렬,
소속 상세정보
안진수 ( Ahn Jin-Soo ) - 서울대학교 치의학대학원 치과생체재료과학교실
박혜진 ( Park Hae-Jin ) - 고려대학교 임상치의학대학원 치과교정학과
강승택 ( Kang Sung-Taek ) - 고려대학교 임상치의학대학원 치과교정학과
임용규 ( Lim Yong-Kyu ) - 고려대학교 임상치의학대학원 치과교정학과
이동렬 ( Lee Dong-Yul ) - 고려대학교 임상치의학대학원 치과교정학과
KMID : 0362220100370030243
Abstract
The purpose of this study was to investigate the effects of various acidic solutions on the shear bond strength of orthodontic brackets to enamel surfaces. The upper premolar brackets were bonded with Tansbond XT to 120 extracted human premolar teeth and divided equally into four groups, that were, Coca-Cola, Orange juice, Listerine® and distilled water as a control group. All groups were conditioned for three 5-minute sessions with equal intervening intervals for 90 d ays. I nitial pH, shear b ond strength, and mod ified adhesive remnant index of the groups were analysed statistically (a=0.05). The results were obtained as follows : 1. There was a relationship between the initial pH of the tested solutions and the shear bond strength of the orthodontic brackets after exposure to the acidic solutions (p<0.05). 2.Coca-Cola, which has a high level acidity, had significantly lower shear bond strength than the control group (p<0.05). 3. Orange juice and Listerine®, which have a low level acidity, do not seem to have a destructive potential on the bond strength of orthodontic brackets (p>0.05). 4. There was no significant correlation between the shear bond strength and the modified adhesive remnant index scores of the acidic solution groups (p>0.05).
키워드
Acidic solutions; Initial pH; Modified ARI; Shear bond strength
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