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The interaction of adhesive systems with human dentin
J Perdigão1, P Lambrechts, B Van Meerbeek
1Department of Operative Dentistry and Dental Materials, U.Z. St. Rafaël, Leuven, Belgium.
American Journal of Dentistry
|August 1, 1996
Summary
This study examined six dental bonding systems in vivo. All systems showed detachment at the resin-dentin interface, though some factors influenced interface integrity.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
- Biomaterials
Background:
- Dental bonding systems are crucial for restoring tooth structure.
- Understanding in vivo interactions between bonding agents and dentin is essential for clinical success.
- Variability in bonding system performance necessitates rigorous evaluation.
Purpose of the Study:
- To investigate the in vivo interaction of six experimental and commercial dental bonding systems with dentin.
- To evaluate the interface integrity of different bonding systems under clinical conditions.
Main Methods:
- Six dental bonding systems were applied to Class I cavities in premolars.
- Teeth were extracted shortly after resin composite polymerization.
- Specimens were processed for field-emission scanning electron microscopy (FESEM) analysis.
Main Results:
- All tested bonding systems exhibited detachment at the resin-dentin interface.
- The presence of air bubbles or thick resin layers influenced separation frequency.
- Some systems did not form thick layers, allowing resin composite penetration into dentin tubules.
Conclusions:
- No tested bonding system achieved a completely gap-free interface in vivo.
- Factors like resin layer thickness and air entrapment affect interface stability.
- Further research is needed to optimize dentin bonding systems for long-term clinical performance.