Bacillus-shaped deposits composed of hexahedrally based crystals in human dental calculus.
Bacillus-shaped deposits composed of hexahedrally based crystals in human dental calculus.
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人类牙结石中由六面体晶体组成的芽孢杆菌状沉积物。
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
S. Higashi
中科院分区：
文献类型：
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作者：
T. Kodaka;A. Hirayama;K. Miake;S. Higashi
在人类牙龈上和牙龈下的牙石中，通过扫描电镜观察到杆菌状沉积物呈现各种由六面体晶体组成的岩堆形式。晶体尺寸约为0.1-1.5微米。电子探针微量分析总是检测到钙、磷和镁。它们的摩尔比与含镁惠洛克石的摩尔比相似，并且晶体也给出了惠洛克石的电子衍射图。杆菌状沉积物与细胞内钙化微生物共存，口腔微生物部分被六面体晶体所取代。在暴露于口腔的牙石表层未见结晶沉积，但在龈上型和龈下型牙石的最内层和间隙以及龈下深层牙石的外层均有结晶沉积。
In human supra- and subgingival calculus, bacillus-shaped deposits showing various rocky-pile forms composed of hexahedrally based crystals were observed by scanning electron microscopy. The crystal size measured approximately 0.1-1.5 microns. The electron probe microanalysis always detected calcium, phosphorous, and magnesium. Their molar ratios resembled those of magnesium-containing whitlockite and moreover the crystals also gave the electron diffraction pattern of whitlockite. The bacillus-shaped deposits happened to coexist with the intracellular calcifying microorganisms, furthermore, oral microorganisms partially replaced by the hexahedrally based crystals were found. The crystal deposits were never seen in the surface layers of calculus exposed to the oral cavity, but occurred in the innermost layers and intra-spaces of supragingival and ledge-type subgingival calculus and in the outer layers of deep subgingival calculus.
对人类和动物牙结石的晶体成分进行扫描电子显微镜和电子探针微量分析。
DOI：
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发表时间：
1988
期刊：
Scanning microscopy
影响因子：
--
作者：
LeGeros,RZ;Orly,I;LeGeros,JP;Gomez,C;Kazimiroff,J;Tarpley,T;Kerebel,B
通讯作者：
Kerebel,B