| Light transmittance characteristics and refractive indices of light-activated pit and fissure sealants. | |
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MedLine Citation:
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PMID: 20379018 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We examined the light transmittance characteristics and refractive indices of light-activated pit and fissure sealants. Five commercial pit and fissure sealants and human enamel were studied, along with the CIE L*a*b* color values of the materials and enamel. The light transmittance spectra of the pit and fissure sealants showed a similar trend to the enamel, especially at wavelengths below 530 nm. The average light transmittance values from 400 to 500 nm of the materials at 0.5-mm-thick ranged from 10.0% to 40.4%. The refractive indices at 589.3 nm ranged from 1.504 to 1.546, and were approximately 4-8% lower than that of enamel. The measurements for the surface hardness of materials indicate that the light-attenuating effect of enamel and the material itself reduced the polymerization efficiency of the material. For all materials, chromatic a* showed negative and b* showed positive values, as did enamel. Significant differences in light transmittance characteristics and refractive indices between the materials and enamel may affect color matching between them. |
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Authors:
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Hiroyuki Arikawa; Naoyuki Shinohara; Hideo Takahashi; Takahito Kanie; Koichi Fujii; Seiji Ban |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Dental materials journal Volume: 29 ISSN: 0287-4547 ISO Abbreviation: Dent Mater J Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-04-09 Completed Date: 2010-05-03 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8309299 Medline TA: Dent Mater J Country: Japan |
Other Details:
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Languages: eng Pagination: 89-96 Citation Subset: D |
Affiliation:
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Department of Biomaterials Science, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima, Japan. hiro@dent.kagoshima-u.ac.jp |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Color Colorimetry Dental Bonding, Light-Cured* Dental Enamel / radiation effects* Hardness Humans Materials Testing Optical Processes Pit and Fissure Sealants / radiation effects* Refractometry Scattering, Radiation |
| Chemical | |
Reg. No./Substance:
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0/Pit and Fissure Sealants |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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