Eluted substances from unpolymerized and polymerized dental restorative materials and their Nernst partition coefficient
| Autor: | Franx-Xaver Reichl, Johannes Zaspel, Reinhard Hickel, Jürgen Durner, W. Spahl, Helmut Schweikl |
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| Rok vydání: | 2010 |
| Předmět: |
Ceramics
Materials science Organically Modified Ceramics Siloxanes Polymers Polyurethanes Biocompatible Materials Methacrylate Composite Resins Gas Chromatography-Mass Spectrometry Glycerides Polyethylene Glycols Dental Materials chemistry.chemical_compound Polymethacrylic Acids stomatognathic system Cyclohexenes Materials Testing Stilbenes Humans Bisphenol A-Glycidyl Methacrylate General Materials Science General Dentistry Triethylene glycol Chromatography Aqueous solution Compomers Terpenes Elution Methanol Water Silanes Partition coefficient Monomer Models Chemical chemistry Glass Ionomer Cements Mechanics of Materials Solvents Methacrylates Gas chromatography |
| Zdroj: | Dental Materials. 26:91-99 |
| ISSN: | 0109-5641 |
| DOI: | 10.1016/j.dental.2009.08.014 |
| Popis: | Objectives Components released from resin-based dental materials are important factors in the assessment of the biocompatibility of these materials. The study was performed to investigate the elution of substances from unpolymerized and polymerized composites (Tetric ® = TET; Arabesk ® = ARA), ormoceres (Admira ® = ADM; Definite ® = DEF) and the compomere (Hytac ® = HYT). Methods Specimens were polymerized and immersed in either water or methanol. Besides the unpolymerized specimens were dissolved in methanol. Eluted substances were detected by gas chromatography/mass spectroscopy. The Nernst partition coefficient (DC) of 64 substances, eluted from various resin-based dental materials was determined. Results Only in methanolic and aqueous eluates from unpolymerized and polymerized specimens of DEF and ADM, the comonomere 1,2/1,3-glycerol dimethacrylate was measured. Triethylene glycol dimethacrylate was eluted into the aqueous and methanolic phase from polymerized specimens from TET and ARA. 2-Hydroxyethyl methacrylate was eluted into the methanolic phase from polymerized specimen from TET and HYT. Residuals of monomer synthesis like triphenyl stibane were found in unpolymerized specimens of TET and ARA. Camphorquinone was eluted into the methanolic eluate from polymerized and unpolymerized specimens from all tested dental materials. Highest DC of 20.8 was found for 1/2-cyclohexene methacrylate. DC of urethane dimethacrylate and bisphenol-A-glycidyldimethacrylate varies from different manufacturers. Significance Impurities from manufacturing process were found in some resin-based materials. Various well-known substances causing allergic reactions were found in aqueous or methanolic elutes. Patients, dental and manufacturing personnel are exposed to these substances. |
| Databáze: | OpenAIRE |
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