PMID: 15387409Sep 25, 2004Paper

The role of the ionomer glass component in polyacid-modified composite resin dental restorative materials

Journal of Materials Science. Materials in Medicine
Gabriel O AduseiJ W Nicholson

Abstract

In order to model the processes that occur within polyacid-modified composite resin ("compomer") dental restoratives, a series of experiments has been carried out with silanated and silane-free ionomer glass G338, and silanated and silane-free unreactive glass (Raysorb T-4000). In an acid-base reaction with dental grade aqueous maleic acid-acrylic acid copolymer solution, the setting time of the silanted G338 was found to be 9 min, compared with 5 min for the silane-free glass. Inclusion of each glass in an experimental composite resin system showed that the formulations which contained G338 absorbed more water than the formulations which contained Raysorb T-4000, regardless of whether or not the glass was silanted. Biaxial flexure strength was superior for experimental composites containing Raysorb T-4000, with highest results being obtained with the silanated glass. Overall these results demonstrate that silanation of the filler is essential for optimal physical properties but that, for the ionomer glass, it inhibits the acid-base reaction. The presence of ionomer glass led to an increase in water uptake compared with the unreactive glass, regardless of the presence of silane.

Citations

Dec 7, 2007·Journal of Materials Science. Materials in Medicine·John W Nicholson
Feb 11, 2011·Journal of Applied Oral Science : Revista FOB·Rodrigo Borges FonsecaLourenço Correr-Sobrinho
Jul 26, 2011·Dental Materials : Official Publication of the Academy of Dental Materials·Paul J MilwardChristopher D Lynch
Jun 23, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·John W Nicholson
Sep 1, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Amani AghaMangala Patel

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