Structures of biological minerals in dental research

被引：142
|
作者：
Mathew, M [1 ]
Takagi, S
机构：
[1] NIST, Amer Dent Assoc Hlth Fdn, Paffenbarger Res Ctr, Dent Crystallog Div, Gaithersburg, MD 20899 USA
[2] NIST, Amer Dent Assoc Hlth Fdn, Paffenbarger Res Ctr, Cariol Div, Gaithersburg, MD 20899 USA
来源：
JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY | 2001年 / 106卷 / 06期
关键词：
biominerals; calcium phosphates; crystal structure; fluorapatite; glaserite; hydroxyapatite; octacalcium phosphate;
D O I：
10.6028/jres.106.054
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Structural features of some calcium phosphates of biological interest are described. Structure of hydroxyapatite (OHAp), considered as the prototype for the inorganic component of bones and teeth is discussed with respect to the kinds and locations of ionic substitutions. Octacalcium phosphate ( OCP), is a probable precursor in biological mineralization. OCP has a layer type structure, with one layer quite similar to that of OHAp and the other, a hydrated layer consisting of more widely spaced Ca, and PO4 ions and the water molecules. The closeness of fit in the apatitic layers of OCP and OHAp accounts for the epitaxial, interlayered mixtures formed by these compounds and the in situ conversion of OCP to OHAp. Possible roles of OCP in biological mineralization are discussed.
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页码：1035 / 1044
页数：10
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