The results show that the utilization of sodium hydrogen-carbonate as a reactant allows the entering of carbonate into the HA structure, mainly in phosphate position, while sodium is eliminated during the process of the powder washing. The entering of silicon in the HA structure progressively ...
Porous bone tissue engineering scaffolds were fabricated using both nano hydroxyapatite (nano HA) powder (20 nm average particle size) and micro HA powder (10 µm average particle size), resulting in sintered scaffolds of 59 vol% porosity and 8.6±1.9 μm average grain size and 72 ...
Literature data show that the density of nanoscale hydroxyapatite is about 3.05 g/cm3, while the density of microscale hydroxyapatite powder is about 3.16 g/cm3 [48]. HApSA had the highest density of 3.17 g/cm3, close to the value of microscale HAp. Along with HApSA+Si, CaHFAP300 and ...
1 therefore, this material has very good biocompatibility and is able to promote bone growth and Immersion of powder in a lower pH solution produces more dissolution of the powder Singer andWD Armstrong, “Determination of Fluoride in Bone with the Fluoride Electrode,” Anal hydroxyapatitebioceramics...
This paper offers an overview of the present achievements in the production of alumina, zirconia and hydroxyapatite parts by means of selective laser sintering/melting of a powder bed or stereolithography. A focus is placed on these specific materials because of their widespread use in the ...
[70,71]. In this study, the SBS values were significantly reduced due to the incorporation of 10 wt% FHA powder into the adhesive, but the values (8.79–9.08 MPa) of the composite adhesives were still within the appropriate range. However, as the incorporation ratio was increased to 20 ...
The angular hydroxyapatite spray powder was supplied by Mr Malcolm Astbury and Scott Elson from Sulzer Metco Australia. The topic presented in this study was initiated from discussions with Dr M. Knepper in 1991.References (26) K. Hayashi et al. Effect of surface roughness of hydroxyapatite-...
reaction pH, X-ray diffraction, thermal analysis, scanning electron microscopy, Fourier transform infrared analyses and inductively coupled plasma-optical emission spectroscopy were used to characterize the phase purity, thermal stability, morphology, and chemical composition of the synthesized HAp powder.doi...
The prepared surface silanized mesoporous NGB nanopowder was stored under vacuum for further use. Second, NBG/Col (50:50 by weight) hybrid scaffold was prepared by mixing acetic acid solubilized collagen solution (Rat-tail type I, 2.05 mg/ml, First Link Ltd., UK) and surface silanized ...
The chemical analysis was performed by inductively coupled plasma optical emission spectrometry (ICP-OES; Liberty 200, Varian, Clayton South, Australia): 20 mg of powder was dissolved in 2 ml of HNO3and the volume of solution was raised to 100 ml by adding deionized water. ...