Evaluation of Biophysical Properties of the Bone Tissue for Biomedical Applications

Powder Mixture for the Production of Microporous Ceramics Based on Hydroxyapatite

“…After heat treatment at 200 o C according to XRD data (Figure 5, Table 1) the following phases were detected in the powder mixture: CaHPO4, Ca3(PO4)2•xH2O, CaC2O4•H2O. The presence of CaC2O4•H2O in powder mixture indicates the incompleteness of the thermal decomposition process according to reaction (2). The form of the XRD curve (Figure 5) indicates that a remarkable part of the powder mixture under investigation presents in quasi-amorphous form after heat treatment at 200 o C.…”

The peculiarities of charge distribution and spatiotemporal changes in electronic and atomic structure of bone tissue

“…As for the thickness, we took into account the water mass fractions 21.5–10.2–10.3% in young–adult–mature bone 40 and computed the ratios of inter-crystallite water to mineral volume (see, Table 2). Then, using the and the measured D and L , the thickness of hydrated layers is found ≈1.2 nm for young bone, ≈0.7 nm for adult and ≈0.75 nm for mature.…”

Powder Mixture for the Production of Microporous Ceramics Based on Hydroxyapatite

“…Moreover, this peak may reflect the process of thermal transformation of quasi-amorphous phase presence of which is possible according to XRD data. After heat treatment at 200 • C, according to XRD data (Figure 5, Table 1), the following phases were detected in the powder mixture: CaHPO (2). The form of the XRD curve (Figure 5) indicates that a remarkable part of the powder mixture under investigation presents in quasi-amorphous form after heat treatment at 200 • C. tions ( 8), ( 9) and (10), describing the transformation of hydrated tricalc Ca3(PO4)2 xH2O (as it was described in PDF card or Ca-deficien Ca9(HPO4)(PO4)5(OH) relative to -tricalcium phosphate -Ca3(PO4)2, wh the 650-800 °C interval [38,39].…”

“…These materials are biocompatible and can be used in medicine as porous matrices for replacing lost or damaged bone tissue or as substrates for cell cultivation. Ceramics based on hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 (HA) are widely used as material for bone implants creation due to its stability and the similarity of chemical and phase compositions of inorganic part of natural bone [2,3].…”

“…After heat treatment at 200 • C, according to XRD data (Figure5, Table1), the following phases were detected in the powder mixture: CaHPO4, Ca 3 (PO 4 ) 2 •xH 2 O, and CaC 2 O 4 •H 2 O. The presence of CaC 2 O 4 •H 2 O in powder mixtures indicates the incompleteness of the thermal decomposition process according to reaction(2). The form of the XRD curve (Figure5) indicates that a remarkable part of the powder mixture under investigation presents in quasi-amorphous form after heat treatment at 200 • C.…”