Difference in polymerization color changes of dental resin composites by the measuring aperture size
- 5 June 2003
- journal article
- research article
- Published by Wiley in Journal of Biomedical Materials Research Part B: Applied Biomaterials
- Vol. 66B (1), 373-378
- https://doi.org/10.1002/jbm.b.10034
Abstract
The objective of this study was to evaluate the influence of the illuminating/viewing aperture diameter of 11 mm/8 mm and 3 mm/3 mm and measuring geometry on the color and polymerization color changes of dental resin composites. Color of resin composites of 12 mm in diameter was measured on a reflection spectrophotometer with SCE and SCI geometry under D65 illumination. Before polymerization, difference in the three‐color coordinates by the material was prominent in spite of the fact that the shade designation of all materials was the same. After polymerization, L* value decreased in hybrid composites but not in packable composites, and changes in a* value were small. When the same aperture size was used, polymerization color change with the SCE was generally higher than those with the SCI. Measured color was different by the aperture size, and the color difference was 16.82–27.05 before polymerization and 20.09–28.51 after polymerization. General trends of polymerization color change were similar in both aperture sizes. Polymerization color changes with 3‐mm aperture size were higher than those with 8‐mm aperture size in hybrid resin composites in both geometries (p < 0.05); however, the color change was material dependent in the case of packable resin composites. © 2003 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 66B: 373–378, 2003Keywords
This publication has 11 references indexed in Scilit:
- Color characteristics of low‐chroma and high‐translucence dental resin composites by different measuring modesJournal of Biomedical Materials Research, 2001
- Studies on optical properties of two commercial visible‐light‐cured composite resins by diffuse reflectance measurementsJournal of Oral Rehabilitation, 1999
- Color and translucency changes during and after curing of esthetic restorative materialsDental Materials, 1997
- Analysis of Edge-losses in Reflectance Measurements of Pigmented Maxillofacial ElastomerJournal of Dental Research, 1996
- Influence of window size in small-window colour measurement, particularly of teethPhysics in Medicine & Biology, 1994
- Effects of Instrument-measuring Geometry on Colorimetric Assessments of Dental PorcelainsJournal of Dental Research, 1990
- Colorimetric changes in composites resulting from visible-light-initiated polymerizationDental Materials, 1990
- A comparison of new and conventional methods for quantification of tooth colorThe Journal of Prosthetic Dentistry, 1990
- Visual and Instrumental Colorimetric Assessments of Small Color Differences on Translucent Dental PorcelainJournal of Dental Research, 1989
- Colour changes on curing light-activated anterior restorative resinsAustralian Dental Journal, 1989