Effect of PMMA polymer on the dynamic viscoelasticity and plasticizer leachability of PEMA-based tissue conditioners
Dental Materials Journal Volume 29 Issue 4
Page 374-380
published_at 2010-08-07
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| File | |
| Title ( eng ) |
Effect of PMMA polymer on the dynamic viscoelasticity and plasticizer leachability of PEMA-based tissue conditioners
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| Creator |
Hong Guang
Maeda Takeshi
Li YingAi
Sadamori Shinsuke
Hamada Taizo
Murata Hiroshi
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| Source Title |
Dental Materials Journal
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| Volume | 29 |
| Issue | 4 |
| Start Page | 374 |
| End Page | 380 |
| 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 degrees 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.
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| Keywords |
Dynamic viscoelasticity
Tissue conditioner
HPLC
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| NDC |
Medical sciences [ 490 ]
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| Language |
eng
|
| Resource Type | journal article |
| Publisher |
日本歯科理工学会
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| Date of Issued | 2010-08-07 |
| Rights |
Copyright (c) 2010 The Japanese Society for Dental Materials and Devices
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0287-4547
[DOI] 10.4012/dmj.2009-134
[NCID] AA10443149
[DOI] http://dx.doi.org/10.4012/dmj.2009-134
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