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Published on: May 17, 2020
Shear bond strength of an experimental composite bracket
Zhe-chen Zhang1, Russell Giordano, Gang Shen
1Department of Orthodontics, Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Room 213, Building No.1, Zhi-Zao-Ju Road, 639, Shanghai, China.
Summary
Sandblasting and silane coupling agent treatments significantly improve the shear bond strength of experimental MZ100 composite brackets. Treated brackets achieved bond strengths comparable to traditional metal brackets.
Area of Science:
- Dental Materials Science
- Orthodontic Technology
- Biomaterials Engineering
Background:
- Experimental composite brackets (MZ100) require evaluation for clinical viability.
- Understanding the impact of surface treatments on bracket-adhesive interface is crucial for orthodontic applications.
Purpose of the Study:
- To assess the in vitro shear bond strength of MZ100 composite brackets.
- To determine the efficacy of silane coupling agent and sandblasting treatments on MZ100 bracket bond strength.
Main Methods:
- MZ100 brackets were subjected to silane coupling agent, sandblasting, or no treatment.
- Two orthodontic adhesives (Blugloo™ and Enlight™) were used for bonding.
- Shear bond strength was measured and compared to metal bracket controls.
Main Results:
- Sandblasted MZ100 brackets bonded with Blugloo™ exhibited the highest shear bond strength (17.9 MPa).
- Non-treated MZ100 brackets showed significantly lower bond strength compared to treated groups.
- Treated MZ100 brackets, except for silane-Blugloo™, demonstrated bond strengths similar to metal brackets.
Conclusions:
- Sandblasting and silane coupling agent treatments enhance the shear bond strength of MZ100 composite brackets.
- These surface modifications result in bond strengths comparable to conventional metal brackets, suggesting potential clinical utility.
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