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Effect of PMMA polymer on the dynamic viscoelasticity and plasticizer leachability of PEMA-based tissue conditioners


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Title: Effect of PMMA polymer on the dynamic viscoelasticity and plasticizer leachability of PEMA-based tissue conditioners
Authors: Hong, Guang / Maeda, Takeshi / Li, YingAi / Sadamori, Shinsuke / Hamada, Taizo / Murata, Hiroshi
Issue Date: 2010
Publisher: The Japanese Society for Dental Materials and Devices / 日本歯科理工学会
Citation: Dental Materials Journal, 29(4), pp.374-380; 2010
Abstract: The purpose of this study was to determine the effect of PMMA polymer on dynamic viscoelasticity and plasticizer leachability of PEMA-based tissue conditioners. One PEMA polymer and one PMMA polymer were used in powder form with four formulations. The combination of 80 wt% ATBC, 15 wt% BPBG and 5 wt% ethyl alcohol was used as the liquid phase. The dynamic viscoelasticity and plasticizer leaching of each specimen were measured after 0, 1, 3, 7, and 14 days of immersion (37°C distilled water) using DMA and HPLC. A significant difference was found among the materials in the dynamic viscoelasticity and leaching of plasticizer. The materials containing 10 wt% PMMA showed the most stable dynamic viscoelasticity, and showed the lowest leaching of plasticizer. The results suggest that the addition of the PMMA polymer to the powder of a tissue conditioner can improve the durability of the PEMA-based tissue conditioner.
Keywords: Dynamic viscoelasticity / HPLC / Tissue conditioner
URI: http://hdl.handle.net/10069/25098
ISSN: 02874547
DOI: 10.4012/dmj.2009-134
Rights: Copyright (c) 2010 The Japanese Society for Dental Materials and Devices
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/25098

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