Publication: Effects of color modifier on degree of monomer conversion, biaxial flexural strength, surface microhardness, and water sorption/solubility of resin composites
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Issued Date
2021-11-01
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ISSN
20734360
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2-s2.0-85119268002
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Mahidol University
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SCOPUS
Bibliographic Citation
Polymers. Vol.13, No.22 (2021)
Suggested Citation
Pipop Saikaew, Patchara Phimolthares, Pheeratas Phitakthanaakul, Panthira Sirikul, Suwannee Mekrakseree, Piyaphong Panpisut Effects of color modifier on degree of monomer conversion, biaxial flexural strength, surface microhardness, and water sorption/solubility of resin composites. Polymers. Vol.13, No.22 (2021). doi:10.3390/polym13223902 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/76578
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Title
Effects of color modifier on degree of monomer conversion, biaxial flexural strength, surface microhardness, and water sorption/solubility of resin composites
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Abstract
Color modifiers can be mixed with resin composites to mimic the shade of severely dis-colored tooth. The aim of this study was to assess the effects of a color modifier on the physical and mechanical properties of a resin composite. The composite was mixed with a color modifier at 0 wt% (group 1), 1 wt% (group 2), 2.5 wt% (group 3), or 5 wt% (group 4). The degree of monomer conversion (DC) was examined after light curing for 20 or 40 s. Biaxial flexural strength (BFS)/mod-ulus (BFM), surface microhardness (SH), and water sorption (Wsp)/solubility (Wsl) were also tested. The DC of group 1 was significantly higher than that of groups 3 and 4. The increase in curing time from 20 to 40 s increased the DC by ~10%. The BFS, BFM, Wsp, and Wsl of all the groups were com-parable. A negative correlation was detected between the concentration of color modifier and the BFS and DC, while a positive correlation was observed with Wsp. In conclusion, the color modifier reduced the DC of composites, but the conversion was improved by extending the curing time. The increase in color modifier concentration also correlated with a reduction in strength and the increase in the water sorption of the composites.