Related Experiment Videos
The evaluation of resin composite consistency
M J Tyas1, D W Jones, A S Rizkalla
1School of Dental Science, University of Melbourne, Australia. m.tyas@dent.unimelb.edu.au
Dental Materials : Official Publication of the Academy of Dental Materials
|September 14, 1999
Summary
A new method reliably assesses unset resin composite consistency. This test is valuable for characterizing dental materials, especially newer
Area of Science:
- Dental Materials Science
- Polymer Chemistry
- Biomaterials Engineering
Background:
- Resin composites are widely used dental restorative materials.
- Assessing the consistency of unset resin composite is crucial for handling and placement.
- Current methods for consistency assessment may lack standardization.
Purpose of the Study:
- To evaluate a novel method for quantifying the consistency of unset resin composite materials.
- To establish a standardized and reliable test for dental material consistency.
Main Methods:
- Fourteen commercial resin composites with varying subjective consistencies were tested.
- A cylindrical mold (8 mm diameter, 8 mm depth) was used.
- A glass rod (4.37 mm diameter) was driven into the composite at a controlled speed (24.4 mm/min) for 6 seconds, measuring maximum force.
Main Results:
- Consistency values ranged from 0.33 N to 31.3 N.
- Higher consistency values were observed for 'packable' resin composite materials.
- The developed test demonstrated high reliability.
Conclusions:
- The described method provides a reliable and potentially standardizable approach for assessing unset resin composite consistency.
- This test can aid in the characterization and selection of dental restorative materials.