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Microleakage study of three adhesive systems.
Vanessa Gallego Arias1, Inger Teixeira Campos, Luiz André Freire Pimenta
1Department of Restorative Dentistry, Dental School of Piracicaba, UNICAMP, Piracicaba, SP, Brazil.
Brazilian Dental Journal
|March 31, 2005
Summary
OptiBond SOLO demonstrated superior efficacy in reducing class II restoration microleakage at dentin margins. The self-etching Etch & Prime 3.0 system was least effective, highlighting differences in hydrophilic dentin adhesive performance.
Area of Science:
- Dentistry
- Dental Materials Science
- Restorative Dentistry
Background:
- Microleakage is a significant concern in Class II restorations, potentially leading to secondary caries and pulpal issues.
- Hydrophilic dentin adhesive systems aim to improve bond strength and reduce marginal gaps.
- Evaluating the clinical performance of different adhesive systems is crucial for optimizing restorative techniques.
Purpose of the Study:
- To compare the efficacy of three hydrophilic dentin adhesive systems in minimizing microleakage in Class II restorations.
- To assess the performance of OptiBond SOLO, Amalgambond Plus, and Etch & Prime 3.0 in preventing marginal leakage.
- To identify the most effective adhesive system for dentin margins in Class II cavities.
Main Methods:
- An in vitro study utilizing 60 human molar teeth with Class II box cavities prepared with dentin cervical margins.
- Random assignment of cavities into three groups, each treated with a different hydrophilic dentin adhesive system (OptiBond SOLO, Amalgambond Plus, Etch & Prime 3.0) and restored with Z-100 composite resin.
- Thermocycling (2000 cycles) followed by immersion in methylene blue dye and stereomicroscopic evaluation (35X) to quantify microleakage using a scoring system (0-4).
Main Results:
- Significant differences in microleakage were observed among the three groups (G1=1994.00, G2=2294.00, G3=2972.00).
- OptiBond SOLO exhibited the lowest microleakage scores, indicating superior performance in sealing dentin margins.
- Etch & Prime 3.0, a self-etching system, demonstrated the least effectiveness in preventing microleakage compared to the other two systems.
Conclusions:
- OptiBond SOLO is the most effective hydrophilic dentin adhesive system for reducing microleakage at dentin margins in Class II restorations.
- The self-etching adhesive system Etch & Prime 3.0 was less effective in preventing microleakage compared to the other tested systems.
- Hydrophilic dentin adhesive choice significantly impacts the marginal integrity of Class II composite restorations.