The crystallographic properties of the mineral phases of enamel and dentin in normal deciduous and permanent teeth / 中华口腔医学杂志
Chinese Journal of Stomatology
;
(12): 219-221, 2002.
Article
in English
| WPRIM
| ID: wpr-347389
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the crystallographic properties of the mineral phases of normal enamel and dentin (dental apatite) in deciduous and permanent teeth.</p><p><b>METHODS</b>Three kinds of physical methods including X-ray diffraction (XRD), infrared absorption spectroscope (IR) and electron probe micro-analysis (EPMA) were utilized in this study.</p><p><b>RESULTS</b>Dental apatite was not uniphase, but multiphase, which could be described as carbonate-substituted hydroxyapatite. Compared to dentin apatite, the higher crystallinity and expanded a-axis lattice parameters were found in enamel. Chemical analyses demonstrated that higher concentrations of Mg and CO(3)(2-) were found in dentin than those of enamel. But enamel had higher Cl content.</p><p><b>CONCLUSIONS</b>The differences among enamel and dentin, in terms of lattice parameter and crystallinity may be partially attributed to the incorporation of Mg, CO(3)(2-) and Cl minor elements.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Spectrophotometry, Infrared
/
Tooth
/
X-Ray Diffraction
/
Chemistry
/
Dental Enamel
/
Dentin
/
Electron Probe Microanalysis
/
Methods
Limits:
Humans
Language:
English
Journal:
Chinese Journal of Stomatology
Year:
2002
Type:
Article
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