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Published on: October 20, 2011
SEM analysis of hybrid layer and bonding interface after chlorhexidine use
1Department of Restorative Sciences, University of Costa Rica, Costa Rica.
Operative Dentistry
|December 15, 2011
Summary
Applying 2% chlorhexidine before using dentin bonding agents preserves the hybrid layer integrity. This protective effect was observed after four months of water storage, enhancing dental restoration durability.
Area of Science:
- Dental Materials Science
- Biomaterials Engineering
- Restorative Dentistry
Background:
- The hybrid layer is crucial for the success of dental restorations.
- Deterioration of the hybrid layer can lead to restoration failure.
- Water storage is a common factor that can degrade the hybrid layer.
Purpose of the Study:
- To evaluate the impact of 2% chlorhexidine on the hybrid layer appearance.
- To compare total-etch and self-etch bonding agents with and without chlorhexidine.
- To assess hybrid layer stability after water storage.
Main Methods:
- Human teeth with Class II cavities were prepared.
- Two bonding agents (Adper Single Bond 2, Adper SE Plus) were used.
- 2% chlorhexidine was applied before bonding agent application in experimental groups.
- Teeth were stored in water for four months and examined using SEM.
Main Results:
- All groups treated with chlorhexidine showed a clear hybrid layer.
- Only half of the specimens without chlorhexidine exhibited a clear hybrid layer.
- Chlorhexidine did not influence the presence of resin tags in tubules.
Conclusions:
- 2% chlorhexidine application before dentin bonding agents mitigates hybrid layer deterioration.
- Chlorhexidine enhances the longevity of the hybrid layer in aqueous environments.
- This finding supports the use of chlorhexidine as a protective agent for dental restorations.
