Related Experiment Videos
Bond strength of ceramic brackets with various bonding systems
S J Chaconas1, A A Caputo, G S Niu
1University of California, School of Dentistry, Section of Orthodontics, Los Angeles 90024.
The Angle Orthodontist
|January 1, 1991
Summary
This study evaluated ceramic bracket bond strengths. Polycrystalline and ceramic-filled plastic brackets showed superior tensile resistance, while monocrystalline brackets were more prone to wing fractures.
Area of Science:
- Orthodontics
- Biomaterials Science
- Dental Materials
Background:
- Orthodontic brackets are crucial for aligning teeth.
- Ceramic brackets offer aesthetic advantages over traditional metal brackets.
- Understanding bond strength is vital for clinical success and minimizing complications.
Purpose of the Study:
- To assess the shear and tensile bond strengths of different ceramic and ceramic-filled brackets.
- To evaluate the influence of various bonding systems on bracket-tooth adhesion.
- To compare the performance of monocrystalline, polycrystalline, and ceramic-filled plastic brackets.
Main Methods:
- Tested one monocrystalline, two polycrystalline, and one ceramic-filled plastic bracket.
- Utilized one light-cured and two chemically-cured bonding systems.
- Performed shear and tensile bond strength tests on human teeth using an Instron test machine.
Main Results:
- Bonding system did not significantly affect shear bond strength for mono- and polycrystalline ceramic brackets.
- Significant differences in shear bond strength were observed with the ceramic-filled plastic bracket based on the bonding system.
- Ceramic-filled plastic and polycrystalline ceramic brackets demonstrated higher tensile force resistance.
- Monocrystalline brackets exhibited a greater tendency for tensile fracture of the wings.
Conclusions:
- Bonding system choice has a variable impact on ceramic bracket bond strength, particularly for ceramic-filled plastic types.
- Polycrystalline and ceramic-filled plastic brackets offer better tensile strength performance.
- Clinicians should consider bracket type and bonding system when anticipating tensile forces during orthodontic treatment.