Fabrication of B-type carbonate apatite blocks by the phosphorization of free-molding gypsum-calcite composite
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- ZAMAN Chowdury Tanira
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
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- TAKEUCHI Akari
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
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- MATSUYA Shigeki
- Section of Bioengineering, Department of Dental Engineering, Fukuoka Dental College
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- ZAMAN Q.H.M. Shawket
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
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- ISHIKAWA Kunio
- Department of Biomaterials, Faculty of Dental Science, Kyushu University
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抄録
B-type carbonate apatite (CO3Ap) block may be an ideal artificial bone substitute because it is closer in chemical composition to bone mineral. In the present study, the feasibility to fabricate CO3Ap blocks was investigated using compositional transformation, which was based on the dissolution-precipitation reaction of a gypsum-calcite composite with free-molding behavior. For the compositional change, or phosphorization, gypsum-calcite composites of varying CaCO3 contents were immersed in 1 mol/L (NH4)3PO4 aqueous solution at 100°C for 24 hours. No macroscopic changes were found after the treatment, whereas microscopic change was observed at SEM level. X-ray diffraction, Fourier transform infrared spectroscopy and CHN analysis indicated that the composites were B-type CO3Ap containing approximately 6–7 wt% of CO3, a value similar to that of biological bone apatite. Diametral tensile strength of the CO3Ap block was approximately 1–3 MPa. Based on the results obtained, it was therefore concluded that gypsum-calcite was a good candidate for the fabrication of CO3Ap blocks, coupled with the advantage that the composite can be molded to any shape by virtue of the setting property of gypsum.
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 27 (5), 710-715, 2008
日本歯科理工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679692569728
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- NII論文ID
- 110006950548
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- NII書誌ID
- AA10443149
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- COI
- 1:CAS:528:DC%2BD1MXks1Wisw%3D%3D
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- ISSN
- 18811361
- 02874547
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- NDL-Digital
- CiNii Articles
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- 使用不可