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The effects of acid etching on the pulpodentin complex.
1Medical College of Georgia, School of Dentistry, Department of Oral Biology-Physiology, Augusta 30912.
Operative Dentistry
|November 1, 1992
Summary
Acid etching dentin is safe with modern bonding systems that effectively seal the dentin. Proper use of hydrophilic resins ensures successful adhesion to etched dentin, preventing pulpal irritation.
Area of Science:
- Dental Materials Science
- Adhesive Dentistry
Background:
- Acid etching is crucial for removing the smear layer in dentin bonding.
- Early studies suggested pulpal irritation from acid etching, possibly due to microleakage.
Purpose of the Study:
- To evaluate the safety and efficacy of acid etching dentin with modern bonding systems.
- To identify requirements for successful adhesive resin bonding to acid-etched dentin.
Main Methods:
- Review of animal studies and clinical observations on acid etching and dentin bonding systems.
- Analysis of the role of microleakage and hydrophilic resins in dentin bonding.
Main Results:
- Modern dentin bonding systems effectively seal etched dentin, preventing pulpal irritation.
- Acid etching increases dentin permeability, necessitating hydrophilic resins for optimal bonding.
Conclusions:
- Acid etching of dentin is viable with current bonding systems that provide adequate sealing.
- Hydrophilic resins are essential for successful bonding to acid-etched dentin.
- Future research may focus on reduced acid concentrations and etching times.