Journal
METHODS AND PROTOCOLS
Volume 3, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/mps3020035
Keywords
validation; artificial saliva; bisphenol-A (BPA); bisphenol A glycerolate dimethacrylate (BIS-GMA); dental composites; CAD; CAM materials; dimethacrylate monomers; HPLC; triethylene glycol dimethacrylate (TEGDMA); urethane dimethacrylate (UDMA)
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Bisphenol-A (BPA), bisphenol A glycerolate dimethacrylate (Bis-GMA), triethylene glycol dimethacrylate (TEGDMA), and urethane dimethacrylate (UDMA) are organic monomers that can be released from dental composites into the oral cavity. Over specific concentrations, they can act as endocrine disruptors or cause toxic effects. The purpose of this work is to develop and validate an analytical method to determine BPA, Bis-GMA, TEGDMA, and UDMA monomers released from synthetic dental resins in artificial saliva. The method was validated before its application to new hybrid ceramic materials used in computer-aided design and computer-aided manufacturing (CAD/CAM) restorations to determine the release of monomers in various time intervals (e.g., 24 h, and 7, 14, 30, and 60 days), both in methanolic solutions, as well as in artificial saliva. Chromatographic analysis was performed isocratically on a Perfect Sil Target ODS-3 analytical column (250 mm x 4.6 mm, 5 mu m) with CH3CN/H2O, 58/42% v/v as mobile phase within 23 min. The developed method was validated in terms of selectivity, linearity, accuracy, and precision.
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