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The effect of storage medium on the elution of monomers from composite materials
Author(s) -
Polydorou Olga,
Huberty Catherine,
Wolkewitz Martin,
Bolek Richard,
Hellwig Elmar,
Kümmerer Klaus
Publication year - 2012
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.31923
Subject(s) - acetone , elution , chemistry , monomer , chromatography , ethanol , bisphenol a , polymerization , organic chemistry , polymer , epoxy
The aim of this study was to evaluate the effect of four different storage media on the elution of monomers from two composite materials. Samples ( n = 10, diameter: 4.5 mm, thickness: 2 mm) of two different composite materials (Ceram X™ & Filtek™ Supreme XT) were stored after polymerization in four different media (NaCl, saliva, ethanol 75% & acetone) for 24 h, 7 days, and 28 days. From the storage medium of each tested time period, samples were prepared and analyzed by LC‐MS/MS, for the elution of BisGMA, TEGDMA, HEMA, Bisphenol A, and two types of UDMA. No monomers were detected in the samples of Ceram X™, independently of the storage medium used. In the samples of Filtek™ Supreme XT, no Bisphenol A, HEMA, and UDMA 1 were found. BisGMA was detected only in the ethanol and acetone samples. The amount of BisGMA eluted in acetone was significant higher compared with ethanol 75% ( p < 0.0001). TEGDMA was the only monomer that could be detected in all tested storage media. Storage in acetone resulted in higher release of TEGDMA when compared with other media. The amount of TEGDMA released in saliva was similar to the one released in ethanol 75%. It can be concluded that acetone is not a suitable medium for elution experiments and although ethanol 75% can simulate saliva concerning the elution of TEGDMA, it does not represent a laboratory substitute of saliva with respect to the elution of monomers like BisGMA. © 2011 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2012.