Determination of Residual Monomers Released from Soft Lining Materials with the use of HPLC

  • Afrodite Sofou Department of Removable Prosthodontics, School of Dentistry, Aristotle University of Thessaloniki Greece.
  • Irene Tsoupi Department of Chemistry Laboratory of Analytical Chemistry, University of Ioannina , 45110 Ioannina Greece.
  • Miltiades Karayannis Department of Chemistry Laboratory of Analytical Chemistry, University of Ioannina , 45110 Ioannina Greece.
  • Bengt Owall Department of Prosthodontics, School of Dentistry, University of Copenhagen, Denmark

Abstract

A study was carried out to examine the post polymerized leachability of three non phthalic and four phthalic residual monomers, from twelve commercially available soft lining materials, using HPLC. Specimens of equal dimensions were constructed from each brand of material following a standardized procedure and were stored in three different conditions of storage i.e. distilled water, artificial saliva and a binary mixture of ethanol-water, with the resulting liquids providing samples for analysis in the HPLC apparatus. Three different experiments were performed for each brand of material  and each condition of storage, in order to examine the parameters time and temperature. The results obtained from this study suggest that a wide spectrum of residues is diffusing out of the twelve examined soft lining materials. The non phthalic compounds were leaching at high concentrations while all the phthalates examined exhibited different degrees of elusion commensurate with the storage condition, brand of material and type of experiment. The main non phthalic component extracted from all the materials was methyl methacrylate, while the mainly extracted phthalic compound was different from each material. The level of elusion seems to be increasing dependent on time, medium of storage, and temperature as well. 

Published
Dec 3, 2007
How to Cite
SOFOU, Afrodite et al. Determination of Residual Monomers Released from Soft Lining Materials with the use of HPLC. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 8, n. 2, p. 10, dec. 2007. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/97>. Date accessed: 18 oct. 2017.