| Composite resin color stability: influence of light sources and immersion media. | |
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MedLine Citation:
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PMID: 21625734 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: This study evaluated the influence of light sources and immersion media on the color stability of a nanofilled composite resin. MATERIAL AND METHODS: Conventional halogen, high-power-density halogen and high-power-density light-emitting diode (LED) units were used. There were 4 immersion media: coffee, tea, Coke® and artificial saliva. A total of 180 specimens (10 mm x 2 mm) were prepared, immersed in artificial saliva for 24 h at 37±1ºC, and had their initial color measured with a spectrophotometer according to the CIELab system. Then, the specimens were immersed in the 4 media during 60 days. Data from the color change and luminosity were collected and subjected to statistical analysis by the Kruskall-Wallis test (p<0.05). For immersion time, the data were subjected to two-way ANOVA test and Fisher's test (p<0.05). RESULTS: High-power-density LED (ΔE=1.91) promoted similar color stability of the composite resin to that of the tested halogen curing units (Jet Lite 4000 plus - ΔE=2.05; XL 3000 - ΔE=2.28). Coffee (ΔE=8.40; ΔL=-5.21) showed the highest influence on color stability of the studied composite resin. CONCLUSION: There was no significant difference in color stability regardless of the light sources, and coffee was the immersion medium that promoted the highest color changes on the tested composite resin. |
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Authors:
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Patricia Aleixo Dos Santos Domingos; Patrícia Petromilli Nordi Sasso Garcia; Ana Luisa Botta Martins de Oliveira; Regina Guenka Palma-Dibb |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of applied oral science : revista FOB Volume: 19 ISSN: 1678-7765 ISO Abbreviation: J Appl Oral Sci Publication Date: 2011 Jun |
Date Detail:
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Created Date: 2011-05-31 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101189774 Medline TA: J Appl Oral Sci Country: Brazil |
Other Details:
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Languages: eng Pagination: 204-11 Citation Subset: D; IM |
Affiliation:
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Department of Dentistry, University Center of Araraquara, Araraquara, SP, Brazil. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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