| タイトル |
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Orientation and deformation of mineral crystals in tooth surfaces
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| 作成者 |
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| アクセス権 |
open access |
| 権利情報 |
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| 主題 |
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Other
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Biomechanics
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Other
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Tooth enamel
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Other
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Hydroxyapatite
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Other
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X-ray diffraction
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Other
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Crystal orientation
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Other
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Strain
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| 内容注記 |
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Abstract
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Tooth enamel is the hardest material in the human body, and it is mainly composed of hydroxyapatite (HAp)-like mineral particles. As HAp has a hexagonal crystal structure, X-ray diffraction methods can be used to analyze the crystal structure of HAp in teeth. Here, the X-ray diffraction method was applied to the surface of tooth enamel to measure the orientation and strain of the HAp crystals. The c-axis of the hexagonal crystal structure of HAp was oriented to the surface perpendicular to the tooth enamel covering the tooth surface. Thus, the strain of HAp at the surface of teeth was measured by X-ray diffraction from the (004) lattice planes aligned along the c-axis. The X-ray strain measurements were conducted on tooth specimens with intact surfaces under loading. Highly accurate strain measurements of the surface of tooth specimens were performed by precise positioning of the X-ray irradiation area during loading. The strains of the (004) lattice plane were measured at several positions on the surface of the specimens under compression along the tooth axis. The strains were obtained as tensile strains at the labial side of incisor tooth specimens. In posterior teeth, the strains were different at different measurement positions, varying from tensile to compressive types.
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| 出版者 |
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Elsevier
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| 日付 |
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| 言語 |
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| 資源タイプ |
journal article |
| 出版タイプ |
AM |
| 資源識別子 |
HDL
http://hdl.handle.net/2115/49714
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| 関連 |
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isVersionOf
DOI
https://doi.org/10.1016/j.jmbbm.2012.02.025
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PMID
22520429
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| 収録誌情報 |
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PISSN
1751-6161
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NCID
AA12344261
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Journal of the Mechanical Behavior of Biomedical Materials
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巻10
開始ページ176
終了ページ182
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| ファイル |
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| コンテンツ更新日時 |
2023-07-26 |
