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高齢者の歯牙による歯冠および歯根の硬化象牙質に関する電子顕微鏡的研究
https://mdu.repo.nii.ac.jp/records/280
https://mdu.repo.nii.ac.jp/records/280fb5917b2-f39c-4294-a715-8eeb21278fcc
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
matsumoto_shigaku_07-01-02.pdf (12.5 MB)
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| Item type | Journal Article(1) | |||||||
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| 公開日 | 2012-05-23 | |||||||
| タイトル | ||||||||
| タイトル | 高齢者の歯牙による歯冠および歯根の硬化象牙質に関する電子顕微鏡的研究 | |||||||
| 言語 | ||||||||
| 言語 | jpn | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | journal article | |||||||
| その他（別言語等）のタイトル | ||||||||
| その他のタイトル | Comparative Electron-microscopy on the Sclerosed Coronal and Root Dentin Using the Teeth of Aged Patients | |||||||
| 著者 |
山崎, 喜之
× 山崎, 喜之
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Using 29 teeth obtained from aged patients belonging 61-to 84-year-old, coronal sclerosed dentin and transparent root dentin were observed by optical, x-ray and electron microscopy both of transmission and scanning, and electron probe microanalysis both of wavelength dispersive x-ray spectroscopy and energy dispersive x-ray spectroscopy. Results were as follows: 1. It was impossible to distinguish the peritubular matrix and the beginning of deposit in dentinal tubule by optical microscopy and microradiography. 2. In the coronal sclerosed dentin, the peritubular matrix and the closure of dentinal tubule were able to discriminate by electron microscopy. The peritubular matrix is not formed as a sclerotic age change but formed as a normal process, so these two are never confused. 3. Ultrastructure of intratubular deposits in the coronal sclerosed dentin could be devided following four types; rhombohedral, polyhedral sand-like, needle-like and minute granular crystals. The rhombohedral crystal was considered to be whitlockite. 4. The opaque sclerosed dentin consisted of the dentinal tubules filled with the crystals belonging the former three types, while the transparent sclerosed dentin, appeared rarely in the crown, was composed of the ones oblitrated by minute granular crystals. 5. In the transparent root dentin the tubule closures always consisted of minute granular crystals, so it may be called transparent sclerosed root dentin. 6. The closures of dentinal tubules both in coronal and root dentin had a property of acid-resistant. 7. Although the peritubular matrices and tubule closures in the trasparent root dentin were generally difficult to discriminate even by electron microscopy, when the ultrathin sections were treated with a weak acid the closures became to appear because the peritubular matrices were demineralized. 8. According to elementary analyses the intratubular deposits both in coronal and root dentin contained usually the elements of Ca, P, Mg, Na, S, Cl and K, and some time of Si, Sr and Ba. The element of F was showed only in the intratubular deposits in the coronal dentin. 9. The quantitaive analyses revealed that the tubule closures contained Ca and P with the same ratio as that of hydroxyapatite in abundance, and Na, Mg and S in a small quantity. These elements in the closures were all higher than those in the intertubular matrix. | |||||||
| 書誌情報 |
松本歯学 巻 7, 号 1, p. 16-49, 発行日 1981-06-30 |
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| 出版者 | ||||||||
| 出版者 | 松本歯科大学学会 | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0385-1613 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AN00232590 | |||||||
| フォーマット | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | application/pdf | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
