| Translucency, opalescence and light transmission characteristics of light-cured resin composites. | |
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MedLine Citation:
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PMID: 20692691 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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OBJECTIVES: To evaluate the translucency, opalescence and light transmission characteristics of resin composites with different thicknesses. METHODS: Disks of three resin composites (Estelite∑, Beautifil II, Clearfil Majesty) of A2 shade were prepared in diameter of 10mm with various thicknesses (0.5mm, 1.0mm and 2.0mm). Color was measured according to CIELAB color scale on a reflection spectrophotometer and a color haze meter, and translucency parameter (TP) and opalescence parameter (OP) were calculated. Using the distribution graphs of transmitted light intensity on a goniophotometer, diffusion factor (DF) as an indicator for a diffuse transmission property and peak gain (G0) for a straight-line transmission property were calculated. RESULTS: The TP and G0 values significantly decreased in the order: 0.5mm>1.0mm>2.0mm thickness (p<0.05). The OP value increased as the thickness of resin composite increased from 1.0mm to 2.0mm (p<0.05), while was similar for the 0.5mm- and 1.0mm-thick groups. The DF value increased from 0.5mm to 1.0mm, but was similar for the 1.0mm- and 2.0mm-thick groups. There was a significant correlation between TP and DF (R(2)=0.96, p<0.001). On the other hand, there was a weak correlation between OP and DF (R(2)=0.21, p<0.005), however within the values of the 0.5mm-thick group, OP was highly correlated with DF (R(2)=0.84, p<0.001). SIGNIFICANCE: At the 0.5mm thickness, the translucency (TP) and opalescence (OP) of resin composites had a significant correlation with a diffuse transmission property (DF). When more than 1.0mm thickness of resin composites, translucency and opalescence were influenced by the thickness, in which translucency significantly decreased and opalescence significantly increased. |
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Authors:
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Ayako Arimoto; Masatoshi Nakajima; Keiichi Hosaka; Kozo Nishimura; Masaomi Ikeda; Richard M Foxton; Junji Tagami |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-08-07 |
Journal Detail:
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Title: Dental materials : official publication of the Academy of Dental Materials Volume: 26 ISSN: 1879-0097 ISO Abbreviation: Dent Mater Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8508040 Medline TA: Dent Mater Country: England |
Other Details:
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Languages: eng Pagination: 1090-7 Citation Subset: D |
Copyright Information:
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Copyright © 2010 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Restorative Sciences, Tokyo Medical and Dental University, Bunkyo-ku, Japan. abookofants@yahoo.co.jp |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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