Related Experiment Videos
Permeability of dentin to adhesive agents
D H Pashley1, B Ciucchi, H Sano
1Department of Oral Biology, Medical College of Georgia, School of Dentistry, Augusta 30912.
Quintessence International (Berlin, Germany : 1985)
|September 1, 1993
Summary
Understanding dentin permeability is key for dental bonding. Resin infiltration into dentinal tubules and intertubular dentin, especially after smear layer removal, is crucial for effective sealing and bond strength.
Area of Science:
- Biomaterials Science
- Dental Materials Science
- Adhesive Dentistry
Background:
- Dentin bonding relies on adhesive agent permeability.
- Smear layer removal allows resin infiltration into dentin.
- Resin penetration into tubules and intertubular dentin is vital for bonding.
Purpose of the Study:
- To investigate the mechanisms and challenges of adhesive resin infiltration into dentin.
- To understand the role of smear layer removal in resin penetration.
- To explore how resin penetration affects dentinal bonding and sealing.
Main Methods:
- Examined resin infiltration into dentinal tubules and intertubular dentin.
- Assessed the impact of smear layer removal on resin penetration.
- Investigated resin penetration through perifibrillar spaces after mineral removal.
Main Results:
- Resin infiltration into tubules can seal them and enhance bond strength.
- Intertubular dentin resin infiltration requires mineral phase removal.
- Fractured dentin facilitates infiltration more than smear layer-covered dentin due to collagen debris.
Conclusions:
- Effective dentin bonding requires understanding resin permeability and infiltration pathways.
- Smear layer management is critical for optimizing resin penetration into intertubular dentin.
- Further research is needed on adhesive resin diffusion through narrow, tortuous dentinal channels.