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Quantitative microleakage of six dentin bonding systems
R S Mandras1, D H Retief, C M Russell
1Department of Biomaterials, University of Alabama School of Dentistry, Birmingham 35294.
American Journal of Dentistry
|June 1, 1993
Summary
This study assessed microleakage in dental restorations using six different bonding systems. Clearfil PhotoBond and Prisma Universal Bond 3 demonstrated superior performance with significantly less microleakage compared to other evaluated systems.
Area of Science:
- Dental Materials Science
- Restorative Dentistry
- Biomaterials
Background:
- Microleakage is a critical factor in the longevity of dental restorations, potentially leading to secondary caries and pulpal issues.
- Evaluating the marginal integrity of various resin composite bonding systems is essential for improving clinical outcomes.
Purpose of the Study:
- To quantitatively compare the microleakage of six different resin composite bonding systems when applied to cementum (dentin).
- To identify which bonding systems offer superior marginal seal in Class V restorations.
Main Methods:
- An in vitro study utilizing a dye-recovery spectrophotometric technique to measure quantitative microleakage.
- Standardized Class V preparations were made on extracted human canine root surfaces and restored with six different bonding systems.
- Teeth underwent thermocycling before dye penetration assessment using spectrophotometry.
Main Results:
- Microleakage values varied significantly among the tested systems.
- Clearfil PhotoBond/Photo Clearfil Bright exhibited the lowest microleakage (0.49 ± 0.20 µg dye/restoration).
- Prisma Universal Bond 3/Prisma AP.H. also showed low microleakage (1.21 ± 0.24 µg dye/restoration).
Conclusions:
- Clearfil PhotoBond and Prisma Universal Bond 3 provide a superior marginal seal compared to the other evaluated bonding systems.
- These findings suggest that Clearfil PhotoBond and Prisma Universal Bond 3 may offer enhanced durability and reduced risk of secondary caries in clinical applications.