2009
DOI: 10.1134/s0020168509030194
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Effect of the concentration of carbonate groups in a carbonate hydroxyapatite ceramic on its in vivo behavior

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Cited by 24 publications
(6 citation statements)
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“…Figure 9 shows the kinetics of calcium ion concentration variations in an isotonic solution for granules with different degrees of substitution. 74 The solubility of granules increased with the increase in the carbonate group content. In vivo tests have shown that granules are osteocondutive; on their surface, the active formation of bone tissue was observed, the resorption rate of granules in a bone defect exceeded that observed for the b-TCP ceramics.…”
Section: Carbonate-containing Hydroxyapatitementioning
confidence: 97%
See 1 more Smart Citation
“…Figure 9 shows the kinetics of calcium ion concentration variations in an isotonic solution for granules with different degrees of substitution. 74 The solubility of granules increased with the increase in the carbonate group content. In vivo tests have shown that granules are osteocondutive; on their surface, the active formation of bone tissue was observed, the resorption rate of granules in a bone defect exceeded that observed for the b-TCP ceramics.…”
Section: Carbonate-containing Hydroxyapatitementioning
confidence: 97%
“…In vivo tests have shown that granules are osteocondutive; on their surface, the active formation of bone tissue was observed, the resorption rate of granules in a bone defect exceeded that observed for the b-TCP ceramics. 65,74 No information on the possible osteoinductive properties of carbonate-containing HA is available.…”
Section: Carbonate-containing Hydroxyapatitementioning
confidence: 99%
“…28 In any event, the level of CO 2− 3 substitution in HAP broadly ranges between 4 and 8 mass%. 25,26,29,43 As a result of departure from the stoichiometric composition, the Ca/P (calcium:phosphate) atomic ratio elevates beyond 1.67 recorded for "ideal" HAP. 25,29 In the absence of critical thermodynamic data for CO 2− 3 substituted, Ca 2+ -deficient HAP, properties for an experimentally derived composition corresponding to Ca 9.23 (NH 4 ) 0.12 [(PO 4 ) 5.36 (CO 3 ) 0.64 ] (OH) 0.54 (CO 3 ) 0.34 as proposed by Lee et al, 25 was used for calculations.…”
Section: Thermodynamic Calculationsmentioning
confidence: 99%
“…Some studies show that mixed AB‐type substitutions, may also occur where OH − is partially replaced by CO32- . In any event, the level of CO32- substitution in HAP broadly ranges between 4 and 8 mass% . As a result of departure from the stoichiometric composition, the Ca/P (calcium:phosphate) atomic ratio elevates beyond 1.67 recorded for “ideal” HAP .…”
Section: Introductionmentioning
confidence: 99%
“…Моды колебаний в ИК спектрах в об-ласти 1415, 1425 и 1450 cm −1 указывают на образование КГАП B-типа: замещение группы РО 4 группой СО 3 , как показано в нашей предыдущей работе [22]. При этом следует отметить, что по соотношению интенсив-ностей колебательных мод РО 4 , расположенных в обла-сти 1090 cm −1 , и мод группы СО 3 можно качественно определить степень замещения комплексом СО 3 группы РО 4 в структуре апатита [23,24]. Экспериментальные данные показали, что у изучаемых в настоящей работе образцов интенсивность моды колебаний группы СО 3 в ИК спектрах от образца к образцу уменьшается, тогда как интенсивность основной моды группы PO 4 остается неизменной.…”
Section: результаты и обсуждениеunclassified