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https://hdl.handle.net/2440/1564
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Type: | Journal article |
Title: | The glass-ionomer phase in resin-based restorative materials |
Author: | Tay, F. Pashley, E. Huang, C. Hashimoto, M. Sano, H. Smales, R. Pashley, D. |
Citation: | Journal of Dental Research, 2001; 80(9):1808-1812 |
Publisher: | Amer Assoc Dental Research |
Issue Date: | 2001 |
ISSN: | 0022-0345 1544-0591 |
Statement of Responsibility: | F.R. Tay, E.L. Pashley, C. Huang, M. Hashimoto, H. Sano, R.J. Smales and D.H. Pashley |
Abstract: | <jats:p> Glass-ionomer (GI) fillers are added to restorative materials, but it is unclear if they truly react with these materials. This TEM study evaluated the existence of the GI phase in a conventional GIC (ChemFlex), a resin-modified GIC (Fuji II LC), a giomer (Reactmer Paste), a compomer (Dyract AP), and a composite (Spectrum<jats:sup> TPH</jats:sup>), before and after water uptake. Wafers were stored at 100% RH for 24 hrs, or in water for 7 or 84 days. ChemFlex glass particles were surrounded by 300-nm-thick silica gel layers. In Fuji II LC, we found thinner hydrogel layers (100 nm) that became thicker upon water storage. No appreciable change occurred in Reactmer Paste. Only a very thin hydrogel layer occurred in Dyract AP, and none was seen in Spectrum<jats:sup>TPH</jats:sup> after water storage for 84 days. We conclude that the variable extent of the GI phase is determined by differences in the resin composition of the restoratives. </jats:p> |
Keywords: | glass ionomer, hydrogel, resin matrix. |
DOI: | 10.1177/00220345010800090701 |
Published version: | http://dx.doi.org/10.1177/00220345010800090701 |
Appears in Collections: | Aurora harvest 2 Dentistry publications |
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