The korean journal of orthodontics (대한치과교정학회지)

The Korean Association Of Orthodontists (대한치과교정학회)
권호 표지

SHEAR BOND STRENGTH OF METAL BRACKETS BONDED WITH LIGHT-CURED ADHESIVE: AN IN VITRO COMPARATIVE STUDY

광중합 접착제로 접착된 금속 브라켓의 전단접착강도에 관한 연구

  • Chang, Young-Il (Department of Orthodontics, College of Dentistry, Seoul National University) ;
  • Lee, Suhng-Jin (Department of Orthodontics, College of Dentistry, Seoul National University)
  • 장영일 (서울대학교 치과대학 치과교정학교실) ;
  • 이승진 (서울대학교 치과대학 치과교정학교실)
  • Published : 1992.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study was to evaluate and compare the shear bond strengths and failure sites of metal brackets bonded with chemically cured adhesive and light-cured adhesive. 10 brackets were bonded on prepared enamel surfaces with $Transbond^{circledR}$ (Unitek/3M; U.S.A.) light-cured orthodontic adhesive and another 10 brackets were bonded with $Ortho-one^{\circledR}$ (Bisco:U.S.A.) chemically cured orthodontic adhesive. 24 hours after bonding, the Instron universal testing machine was used to measure the shear bond strengths. The failure sites were examined under streoscopic microscope. The results were as follows: 1 . The mean shear bond strength of metal brackets bonded with light-cured adhesive was lower than that of metal brackets bonded with chemically cured adhesive, but the difference was not statistically significant (p < 0.05). 2. Regardless of the type of adhesives, the brackets were failed primarily at the bracket base-adhesive interface. 3. Bonding of metal brackets with light-cured adhesive is considered to be clinically acceptable.

Keywords