Shear Bond Strengths of Plastic Brackets with a Mechanical Base

Jia Kuang Liu, Li Tung Chang, Shu Fen Chuang, Dar Bin Shieh

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)


This study compares the shear bond strengths of plastic brackets with a mechanical base and metal brackets using two different adhesives, and examines the modes of failure using a scanning electron microscope (SEM). Forty extracted human premolars were selected for bonding. Two types of brackets: metal and plastic-Spirit MB, and two orthodontic adhesives: System 1 + and Enlight, were used. After bonding, all samples were put into a 37°C distilled water bath for 24 hours before shear bond strengths were tested. The bond strengths of the plastic brackets were significantly lower than those of the metal brackets (P < .0001). There was a statistically significant difference in bond strengths between System 1 + and Enlight for plastic brackets (P < .05), but not for metal brackets. The modes of failure predominantly occurred at the enamel/adhesive interface in the metal bracket-System 1 + group, within the adhesive in the metal bracket-Enlight and plastic bracket-System 1 + groups, and at the bracket/adhesive interface in the plastic bracket-Enlight group.

頁(從 - 到)141-145
期刊Angle Orthodontist
出版狀態Published - 2002 四月

All Science Journal Classification (ASJC) codes

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