Crystal Structure Studies of Human Dental Apatite as a Function of Age
Studies of the average crystal structure properties of human dental apatite as a function of age in the range of 5–87 years are reported. The crystallinity of the dental hydroxyapatite decreases with the age. The a-lattice constant that is associated with the carbonate content in carbonate apatite d...
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| Veröffentlicht in: | International journal of biomaterials 2009, Vol.2009 (2009), p.1-6 |
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| container_title | International journal of biomaterials |
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| creator | Antonakos, A. Leventouri, Th Kyriacou, A. Venturelli, R. Liarokapis, Efthymios Perdikatsis, V. |
| description | Studies of the average crystal structure properties of human dental apatite as a function of age in the range of 5–87 years are reported. The crystallinity of the dental hydroxyapatite decreases with the age. The a-lattice constant that is associated with the carbonate content in carbonate apatite decreases with age in a systematic way, whereas the c-lattice constant does not change significantly. Thermogravimetric measurements demonstrate an increase of the carbonate content with the age. FTIR spectroscopy reveals both B and A-type carbonate substitutions with the B-type greater than the A-type substitution by a factor up to ~5. An increase of the carbonate content as a function of age can be deduced from the ratio of the ν2CO3 to the ν1PO4 IR modes. |
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The crystallinity of the dental hydroxyapatite decreases with the age. The a-lattice constant that is associated with the carbonate content in carbonate apatite decreases with age in a systematic way, whereas the c-lattice constant does not change significantly. Thermogravimetric measurements demonstrate an increase of the carbonate content with the age. FTIR spectroscopy reveals both B and A-type carbonate substitutions with the B-type greater than the A-type substitution by a factor up to ~5. 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| title | Crystal Structure Studies of Human Dental Apatite as a Function of Age |
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