Falyouna, O., Kakonyi, G., Mulligan, S. orcid.org/0000-0001-7979-3696 et al. (4 more authors) (2018) Behavior of dental composite materials in sterilized and non-sterilized landfill leachate. In: Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES). 4th International Exchange and Innovation Conference on Engineering & Sciences (IEICES), 18-19 Oct 2018, Fukuoka, Japan. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University , pp. 72-76.
Abstract
Treatment of used and unused dental resin based composites resulting from the activities of dental industries and clinics is challenging. Disposal to landfill site is commonly utilized to manage this waste. We investigated the release of monomers from dental composites in landfill leachate and the chemical changes of sterilized and non-sterilized leachate in the existence of dental composites. Solid phase micro-extraction (SPME) coupled with high performance liquid chromatography (HPLC) was used to extract and quantify the released monomers. Chemical characterization of leachate was carried out using pH meter, gas chromatography (GC), ion chromatography (IC) and inductively coupled plasma mass spectrometry (ICP-MS). The HPLC results, revealed that Bis-GMA, TEGDMA, UDMA, HEMA and BPA monomers were released from dental composites. According to the results of pH, GC, IC and ICP-MS, the presence of dental composites has no significant effect in the chemistry of leachate except increasing the production of CH4 and CO_2. However, autoclaving increased pH values and decreased calcium concentration in sterilized samples. Furthermore, Mn^<2+>concentration increased and Fe^<3+> concentration decreased in non-sterilized samples due to microbial activities.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 Kyushu University Library. |
Keywords: | Composite Materials; Monomers; Landfill Leachate; Autoclaving |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > School of Clinical Dentistry (Sheffield) |
Funding Information: | Funder Grant number British Dental Association 002-2013 Engineering and Physical Sciences Research Council EP/S025278/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 23 Aug 2022 10:46 |
Last Modified: | 23 Aug 2022 10:46 |
Status: | Published |
Publisher: | Interdisciplinary Graduate School of Engineering Sciences, Kyushu University |
Refereed: | Yes |
Identification Number: | 10.15017/1961288 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:189924 |