GC-MS and Surface Characteristics of Polyvinyl Siloxane-An In Vitro Analysis.

To assess the surface characteristics, composition and release of components of Polyvinyl siloxane (PVS) impression material and explore the use of the material other than for impressions. Forty samples of 0.5-mm thickness and 8-mm diameter PVS discs, with few perforations, were prepared and divided into four groups. Group 1 in methanol was analyzed by GC-MS immediately and on 1st, 7th and 14th day. Group 2 and 3 placed in 10 mL of human saliva and in artificial nasal fluid, respectively, were analyzed by GC-MS at 24 hours. Group 4 was subjected to surface characteristics analysis by placing five PVS discs each in 1 mL of human saliva and 1 mL of artificial nasal fluid, respectively. On Day 1, Dodecanoic acid, methyl ester, Cyclononasiloxane, octadecamethyl, Cyclodecasiloxane and eicosamethyl (four peaks) were observed in Group 1. At 24 hours, Group 2 had additional compounds of 2-Decene,7-methyl-(Z)-, 2-Undecene,8-methyl-(Z)- and Lauryl acetate. Group 3 showed release of 32 compounds, but their retention time was less. Surface characteristics on Day 14 revealed no noticeable changes. The study revealed that there was a lack of any adverse component release from PVS for a period of 2 weeks based on GC-MS analysis. © The Author(s) 2021. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

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K Kasim Mohamed, R Fathima Banu, V Anand Kumar, Lakshmi Sundaram, S P Thyagarajan. GC-MS and Surface Characteristics of Polyvinyl Siloxane-An In Vitro Analysis. Journal of chromatographic science. 2022 Feb 16;60(2):111-116

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PMID: 33987640

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