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Microleakage under orthodontic brackets bonded with the custom base indirect bonding technique
Ahmet Yagci1, Tancan Uysal, Mustafa Ulker
1Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey.
European Journal of Orthodontics
|September 16, 2009
Summary
This study found no significant difference in microleakage between direct and indirect orthodontic bracket bonding methods. Both techniques demonstrated comparable sealing at enamel-composite and composite-bracket interfaces, ensuring reliable bracket adhesion.
Area of Science:
- Dental Materials Science
- Orthodontic Technology
- Biomaterials Engineering
Background:
- Microleakage around orthodontic brackets can compromise treatment outcomes and lead to secondary caries.
- Evaluating the efficacy of different bonding methods is crucial for optimizing clinical practice.
Purpose of the Study:
- To compare the microleakage of orthodontic brackets bonded using indirect versus direct methods.
- To assess microleakage at both occlusal and gingival margins of the enamel-composite and composite-bracket interfaces.
Main Methods:
- An in vitro study involving 40 human maxillary premolars divided into direct and indirect bonding groups.
- Specimens were stained and examined under a stereomicroscope to quantify microleakage.
- Statistical analysis using Kruskal-Wallis and Mann-Whitney U-tests with Bonferroni correction.
Main Results:
- No statistically significant differences in microleakage were observed between direct and indirect bonding methods at any margin.
- The gingival margins showed slightly higher microleakage than occlusal margins in the direct bonding group, but this was not statistically significant.
- All occlusal margins in both groups exhibited no microleakage.
Conclusions:
- The choice between direct and indirect bonding methods does not significantly impact the microleakage at the enamel-composite-bracket complex.
- Both bonding techniques provide comparable marginal integrity for orthodontic brackets.