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Dual cure luting composites--Part II: Clinically related properties
B Van Meerbeek1, S Inokoshi, C L Davidson
1Department of Operative Dentistry and Dental Materials, Katholieke Universiteit te Leuven, Belgium.
Journal of Oral Rehabilitation
|January 1, 1994
Summary
Dual cure luting composites show wide variations in film thickness and consistency. Optimal composition and testing methods are needed for these dental materials.
Area of Science:
- Dental Materials Science
- Polymer Chemistry
Background:
- Dual cure luting composites are essential in dental restorations.
- Standardized testing is crucial for material performance evaluation.
Purpose of the Study:
- To compare dual cure luting composites based on film thickness, consistency, and working time.
- To evaluate the influence of temperature and setting reaction on film thickness.
Main Methods:
- Utilized American National Standard/American Dental Association (ANS/ADA) specifications.
- Assessed film thickness, consistency, and working time for thirteen composites.
- Investigated temperature effects and employed Scanning Electron Microscope (SEM) analysis.
Main Results:
- Significant variations observed in film thickness, consistency, and working time among tested composites.
- A strong linear correlation was found between film thickness and consistency.
- Temperature influenced film thickness; cooling increased it, while heating reduced it, with exceptions due to polymerization.
Conclusions:
- Current luting composites exhibit considerable diversity, necessitating clear specifications for optimal composition.
- Existing methods for testing film thickness require improvement for accuracy and reliability.