| The effect of adding hydroxyapatite on the flexural strength of glass ionomer cement. | |
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MedLine Citation:
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PMID: 12873116 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This present study investigated the effects of the addition of hydroxyapatite (HA) on the flexural strength and microstructure of conventional GIC, and its effect on the cement's initial flexural strength at different storage conditions. Specimens were fabricated by mixing HA in whisker or granule form into commercially prepared GIC, and these were subjected to a three-point bending test and SEM observations. Some specimens were stored in different conditions from dry to wet for 15 minutes to an hour prior to testing. When compared to the control, specimens with 16-25% HA whiskers added at P/L 1.75 showed a significant increase in the flexural strength (p < 0.05), and as well with 19% HA whiskers at P/L 1.75 (p < 0.001) and 2.33 (p < 0.05). A significant increase was also noted for those with 8-25% HA granules added at P/L's 1.75 (p < 0.05), 2.5 (p < 0.05) and 3.60 (p < 0.01). The addition of HA hastens the development of early (15 min, 1 hour) flexural strength of GIC in moist or wet conditions. These results indicate that the addition of HA, regardless of form, improve the flexural and microstructural properties of GIC. |
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Authors:
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Kenji Arita; Milanita E Lucas; Mizuho Nishino |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Dental materials journal Volume: 22 ISSN: 0287-4547 ISO Abbreviation: Dent Mater J Publication Date: 2003 Jun |
Date Detail:
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Created Date: 2003-07-22 Completed Date: 2003-10-02 Revised Date: 2006-11-15 |
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: 126-36 Citation Subset: D |
Affiliation:
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Department of Pediatric Dentistry, The University of Tokushima School of Dentistry, 3-18-15, Kuramoto, Tokushima 770-8504, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Biocompatible Materials
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chemistry* Durapatite / chemistry* Glass Ionomer Cements / chemistry* Humans Materials Testing Microscopy, Electron, Scanning Pliability Stress, Mechanical Surface Properties Time Factors Water / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Biocompatible Materials; 0/Glass Ionomer Cements; 1306-06-5/Durapatite; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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