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Adhesive systems used for sealing contaminated surfaces: a microleakage evaluation
Rosa Helena Miranda Grande1, Alessandra Reis, Alessandro Dourado Loguercio
1Department of Dental Materials, School of Dentistry, University of São Paulo.
Brazilian Oral Research
|October 19, 2005
Summary
OptiBond FL demonstrated superior performance in sealing dental pits and fissures on contaminated surfaces compared to OptiBond SOLO, significantly reducing microleakage. This finding supports its use in challenging clinical conditions.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Restorative Dentistry
Background:
- Pit and fissure sealants are crucial for preventing dental caries.
- Contaminated surfaces present a challenge for sealant adhesion and longevity.
- Evaluating sealant performance under simulated clinical conditions is essential.
Purpose of the Study:
- To compare the microleakage of OptiBond FL and OptiBond SOLO when used as sole pit and fissure sealing materials on contaminated surfaces.
- To assess the influence of aging protocols on sealant performance.
Main Methods:
- Fifty-six sound teeth were acid-etched and contaminated with plasma.
- Two adhesive systems (OptiBond FL, OptiBond SOLO) were light-activated and applied.
- Specimens underwent thermal cycling, load cycling, and pH cycling.
- Microleakage was evaluated using silver nitrate penetration and digitized image analysis.
Main Results:
- A significant difference in microleakage was observed between the two adhesive systems (p < 0.05).
- OptiBond FL exhibited lower microleakage compared to OptiBond SOLO.
- Aging treatments influenced sealant performance, with combined thermal, load, and pH cycling showing greater effects.
Conclusions:
- OptiBond FL shows better efficacy in preventing microleakage on contaminated surfaces compared to OptiBond SOLO.
- OptiBond FL is a suitable material for sealing pits and fissures, even in the presence of moisture or contamination.
- Further research should explore long-term clinical performance and different contamination models.
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