| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2009-04-02 |
| タイトル |
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|
タイトル |
Synchrotron radiation microbeam X-ray fluorescence analysis of zinc concentration in remineralized enamel in situ. |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Remineralization |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Zinc |
| キーワード |
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|
主題Scheme |
Other |
|
主題 |
Synchrotron radiation |
| キーワード |
|
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主題Scheme |
Other |
|
主題 |
X-ray fluorescence |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Matsunaga, Tsunenori
Ishizaki, Hidetaka
Tanabe, Shuji
Hayashi, Yoshihiko
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
OBJECTIVE: Remineralization is an indispensable phenomenon during the natural healing process of enamel decay. The incorporation of zinc (Zn) into enamel crystal could accelerate this remineralization. The present study was designed to investigate the concentration and distribution of Zn in remineralized enamel after gum chewing. METHODS: The experiment was performed at the Photon Factory. Synchrotron radiation was monochromatized and X-rays were focused into a small beam spot. The X-ray fluorescence (XRF) from the sample was detected with a silicon (Si) (lithium (Li)) detector. X-ray beam energy was tuned to detect Zn. The examined samples were small enamel fragments remineralized after chewing calcium phosphate-containing gum in situ. The incorporation of Zn atom into hydroxyapatite (OHAP), the main component of enamel, was measured using Zn K-edge extended X-ray absorption fine structure (EXAFS) with fluorescence mode at the SPring-8. RESULTS: A high concentration of Zn was detected in a superficial area 10-mum deep of the sectioned enamel after gum chewing. This concentration increased over that in the intact enamel. The atomic distance between Zn and O in the enamel was calculated using the EXAFS data. The analyzed atomic distances between Zn and O in two sections were 0.237 and 0.240nm. CONCLUSION: The present experiments suggest that Zn is effectively incorporated into remineralized enamel through the physiological processes of mineral deposition in the oral cavity through gum-chewing and that Zn substitution probably occurred at the calcium position in enamel hydroxyapatite. |
| 書誌情報 |
Archives of oral biology
巻 54,
号 5,
p. 420-423,
発行日 2009-03
|
| 出版者 |
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|
出版者 |
Elsevier BV |
| ISSN |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
00039969 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00548457 |
| PubMed番号 |
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関連タイプ |
isVersionOf |
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|
識別子タイプ |
PMID |
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|
関連識別子 |
19237151 |
| DOI |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1016/j.archoralbio.2009.01.015 |
| 権利 |
|
|
権利情報 |
Copyright (c) 2009 Elsevier Ltd All rights reserved. |
| 著者版フラグ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 引用 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Archives of Oral Biology, 54(5), pp.420-423; 2009 |
AOB54_420.pdf (85.8 kB)
