| Influence of surface roughness on the color of dental-resin composites. | |
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MedLine Citation:
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PMID: 21726062 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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This study deals with the influence of surface roughness on the color of resin composites. Ten resin composites (microfilled, hybrid, and microhybrid) were each polished with 500-grit, 1200-grit, 2000-grit, and 4000-grit SiC papers. The roughness parameter (R(a)) was measured using a Plμ confocal microscope, and field-emission scanning electron microscope (Fe-SEM) images were used to investigate filler morphology. Color was measured using a spectroradiometer and a D65 standard illuminant (geometry diffuse/0° specular component excluded (SCE) mode). Surface roughness decreased with grit number and was not influenced by filler size or size distribution. A significant influence of R(a) on lightness (L(*)) was found. Lightness increased with decreases in roughness, except for specimens that underwent polishing procedure 4 (PP4; 500-grit, 1200-grit, 2000-grit, and 4000-grit SiC papers consecutively). Generally, it was found that surface roughness influenced the color of resin composites. The composites that underwent PP1 (500-grit SiC paper) exhibited significant differences in chroma (C(*)), hue (h°), and lightness (L(*)) compared to composites that underwent PP3 (500-grit, 1200-grit, and 2000-grit SiC papers consecutively) and PP4. Color difference (∆E(*)) between the polishing procedures was within acceptability thresholds in dentistry. |
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Authors:
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Razvan Ghinea; Laura Ugarte-Alvan; Ana Yebra; Oscar E Pecho; Rade D Paravina; Maria Del Mar Perez |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of Zhejiang University. Science. B Volume: 12 ISSN: 1862-1783 ISO Abbreviation: J Zhejiang Univ Sci B Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-07-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101236535 Medline TA: J Zhejiang Univ Sci B Country: China |
Other Details:
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Languages: eng Pagination: 552-62 Citation Subset: IM |
Affiliation:
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Department of Optics, Faculty of Science, University of Granada, Campus Fuentenueva s/n 18071, Granada, Spain; Department of Stomatology, Faculty of Odontology, University of Granada, Campus de Cartuja s/n 18071, Granada, Spain; Houston Center for Biomaterials and Biomimetics & Department of Restorative Dentistry and Biomaterials, University of Texas Dental Branch at Houston, Houston, TX 77030, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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