Content and Release of Bisphenol A from Polycarbonate Dental Products
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概要
- 論文の詳細を見る
Bisphenol A(BPA)is an endocrine disruptor, and is used as a raw material for bisphenol A diglycidyl methacrylate and polycarbonate, that are used in the dental materials.In this study, the total and released amounts of abpa from polycarbonate-based dental materials were measured with high-pressure liquid chromatography(HPLC).The specimens used were orthodontic brackets and denture base resins in the same condition as when obtained commercially were cut into 3×3×4 mm pieces and crushed into powder.The HPLC analysis was carried out after immersion of the specimens in water or ethanol for a determined time.The total amount of BPA in the specimens was analyzed after dissolution in chloroform.The amount of BPA released after immersion in water for 1 hr was 0.01-0.4μg/g for the block samples and 0.14-4.22μg/g for the crushed samples, while that in ethanol for 1 hr was 0.12-9.42μg/g for the block samples and 0.42-22.24μg/g for the crushed samples.The control of BPA in the denture preform resin was 78.9μg/g and this increased to 90.2μg/g after heating to form dentures and then to 250μg/g with mechanical crushing.The results of this study indicate that BPA is released from polycarbonates used in dentistry, and that the thermal conditions during the manufacturing of restorations may cause polymer decomposition resulting in the formation of BPA.
- 日本歯科理工学会の論文
著者
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Ishikawa Kunio
Department Of Biomaterials Faculty Of Dental Science Kyushu University
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SUZUKI Kazuomi
Department of Biomaterials, Okayama University Graduate School of Medicine, Dentistry and Pharmaceut
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Suzuki Kazuomi
Department Of Biomaterials
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SUGIYAMA KATSUMI
Department of Bioengineering, Nagaoka University of Technology
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NISHIMURA Fumio
Department of Dental Technology 1, Faculty of Densitsry, Tokyo Medical and Dental University
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Ishikawa Kunio
Department Of Biomaterials
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FURUTA Hiroaki
Department of Dental Pharmacology, Okayama University Dental School
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Nishimura Fumio
Department Of Dental Technology 1 Faculty Of Densitsry Tokyo Medical And Dental University
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Furuta H
Department Of Dental Pharmacology
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Sugiyama Katsumi
Department Of Dental Pharmacology Okayama University Dental School
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Furuta Hiroaki
Department Of Dental Pharmacology
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SUZUKI Kazuomi
Department of Advanced Prosthodontics, Division of Cervico-Gnathostomatology, Graduate School of Biomedical Sciences, Hiroshima University
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NISHIMURA Fumio
Department of Dental Technology I, Faculty of Dentistry, Tokyo Medical and Dental University
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Ishikawa Kunio
Department of Applied Chemistry, Faculty of Engineering, Osaka Univeristy
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