Conclusions: Crystals forming mineral blocks of mostly compact matter are nucleated on organic substrates, with their growth controlled by the diffusion of building units through the virtually stagnant layer of interstitial fluid wetting the deposit surface. Preferentially formed precursors of hydroxyapatite, dicalcium, octacalcium and/or amorphous calcium phosphate, are in later stages of depo...

The electrolysis method for synthesizing hydroxyapatite nanoparticles (NPs) has the advantage of controlling particle size by adjusting potential and current used. This study aims to NPs formation its characteristics. solution contained Na2H2EDTA.2H2O, KH2PO4, CaCl2, with an EDTA/PO43-/Ca2+ concentration 0.2/0.2/0.2 M. electrolytic are 4, 5, 6 volts hours. carbon electrode spacing used is 2 cm....

in this study, a series of laboratory tests were conducted to investigate the efficiency of hydroxyapatite (1-iap)nanopowders towards adsorption of lysozyme from aqueous solution. in the present research. i rp nanopowderssynthesized from egg-shell characterized using sem and ft-ht. the adsorption of lysozyme was i mg/ml using0.1 g adsorbent in 100 ml of lysozyme solution. adsorption data were f...

objecttive(s): despite the poor mechanical properties of hydroxyapatite, its unique biological properties leads we think about study on improving its properties rather than completely replacing it with other biomaterials. accordingly, in this study we introduced hydroxyapatite reinforced with hardystonite as a novel bio-nanocompositeand evaluate its in-vitro bioactivity with the aim of developi...

please cite this article as : tavakoli-darestani r, kazemian gh, emami m, kamrani-rad a. poly (lactide-co-glycolide) nanofibers coated with collagen and nano-hydroxyapatite for bone tissue engineering. novel biomed 2013;1:8-15. background: a combination of polymeric nanofibrous scaffold and bioactive materials is potentially useful in bone regeneration applications. materials and methods: in th...

background and aims: in this lab trial, the effect of scaffold based on human serum albumin (hsa) and hydroxyapatite nanoparticles (ha nps) on mouse spermatogonial cell line (scl) was investigated. materials and methods: to synthesize ha nps, calcium nitrate and diammonium phosphate at ph 13 were gently added and heated at 100 ºc for 24 hours. then serial concentrations of ha nps was separately...

background: engineering new bone tissue with cells and a synthetic extracellular matrix represents a new approach for the regeneration of mineralized tissues compared with the transplantation of bone (autografts or allografts). methods: in this study, to mimic the mineral and organic component of natural bone, hydroxapatite (ha) and gelatin (gel) composite scaffolds were prepared. the raw mater...

Objective: to determine the effect of nano-hydroxyapatite and different bioactive remineralizing agent in treatment loss enamel minerals. Material M nano-hydroxyapatite, Casein phospho-peptide amorphous calcium phosphate Sodium Fluoride. While artificial saliva was applied on control specimens. Surface microhardness measurements baseline were calculated, before/after demineralization digital 3D...

In this paper, hydroxyapatite coating was successfully deposited on ZK60 magnesium alloy surface by ultrasound-assisted electrodeposition method, and the macroscopic structure, chemical composition corrosion properties of sample HA were analyzed. The results show that quality is improved ultrasonic power, uniform, smooth compact. XRD FTIR analysis main obtained assisted hydroxyapatite. treatmen...