| Resin-modified glass-ionomer setting reaction competition. | |
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MedLine Citation:
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PMID: 19966038 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Resin-modified glass ionomers (RMGI) set by at least 2 mechanisms dependent upon reactant diffusion prior to gelation. Each reaction's kinetics and setting mechanism may rely on and/or compete with the other. In this study, we investigated RMGI setting reaction interactions using differential scanning calorimetry (DSC) by varying light-cure initiation times. A RMGI was analyzed with isothermal and dynamic temperature scan DSC with light-curing occurring immediately, or at 5 or 10 minutes after mixing as well as without light-activation. Results show that as time allowed for the acid-base reaction increased, the light-activation polymerization exotherm decreased. Conversely, analysis of DSC data suggests that earlier light-activation may limit the acid-base reaction and result in a different structured material. During early RMGI development, acid-base and light-polymerization reactions compete with and inhibit one another. |
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Authors:
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D W Berzins; S Abey; M C Costache; C A Wilkie; H W Roberts |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: Journal of dental research Volume: 89 ISSN: 1544-0591 ISO Abbreviation: J. Dent. Res. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-12-16 Completed Date: 2010-01-04 Revised Date: 2012-04-11 |
Medline Journal Info:
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Nlm Unique ID: 0354343 Medline TA: J Dent Res Country: United States |
Other Details:
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Languages: eng Pagination: 82-6 Citation Subset: D; IM |
Affiliation:
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Dental Biomaterials, School of Dentistry, Marquette University, Milwaukee, WI, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid-Base Equilibrium Calorimetry, Differential Scanning* Composite Resins / chemistry* Glass Ionomer Cements / chemistry* Light-Curing of Dental Adhesives / methods* Physicochemical Processes / radiation effects Polymers / chemistry Resins, Synthetic / chemistry* |
| Grant Support | |
ID/Acronym/Agency:
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DE015282/DE/NIDCR NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Composite Resins; 0/Fuji II LC cement; 0/Glass Ionomer Cements; 0/Polymers; 0/Resins, Synthetic |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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