Comparing Methods for Measuring Polymerization Shrinkage in Dental Composites
Author Information
Author(s): Maesako Mayumi, Fischer Nicholas G., Matsui Nagisa, Elgreatly Amira, Mahrous Ahmad, Tsujimoto Akimasa
Primary Institution: Department of Operative Dentistry, Aichi Gakuin School of Dentistry, Nagoya, Japan
Hypothesis
The study aims to compare the polymerization shrinkage of universal shade flowable resin-based composites using wet and dry measurement methods.
Conclusion
The polymerization shrinkage of resin-based composites varies significantly based on the material and measurement method used.
Supporting Evidence
- Polymerization shrinkage ranged from 2.75% to 4.23% when measured by the wet method.
- Bulk Base HARD II Medium Flow showed significantly lower polymerization shrinkage than all other materials.
- The wet method generally measured smaller shrinkage than the dry method.
- Statistical analysis revealed significant differences in shrinkage based on material and measurement method.
Takeaway
This study looked at how much certain dental materials shrink when they harden, using two different ways to measure it. They found that some materials shrink less than others.
Methodology
The study compared polymerization shrinkage of six resin-based composites using wet and dry density measurement techniques, analyzing the results with two-way ANOVA and Tukey’s HSD test.
Limitations
The study did not explore the long-term effects of polymerization shrinkage in clinical settings.
Statistical Information
P-Value
<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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