Bonelike apatite formation on niobium metal treated in aqueous NaOH

  title={Bonelike apatite formation on niobium metal treated in aqueous NaOH},
  author={R. Godley and David Starosvetsky and I. Gotman},
  journal={Journal of Materials Science: Materials in Medicine},
The essential condition for a biomaterial to bond to the living bone is the formation of a biologically active bonelike apatite on its surface. In the present work, it has been demonstrated that chemical treatment can be used to create a calcium phosphate (CaP) surface layer, which might provide the alkali treated Nb metal with bone-bonding capability. Soaking Nb samples in 0.5 M NaOH, at 25 °C for 24 h produced a nano-porous ∼40 nm thick amorphous sodium niobate hydrogel layer on their surface… 

Production and characterization of niobate apatite


Titanium oxide films were prepared using an anodic oxidation method in sulfuric acid solution on the surface of Ti6Al4V alloy at room temperature. The surface energy was obtained by the measurement

Biocompatibility and Mechanical Performance of Ni-Ti

A good biomimetic apatite formation and excellent mechanical performance of Ni- Ti suggests that Ni-Ti can be an excellent candidate material for orthopedic implants.

Apatite grown in niobium by two-step plasma electrolytic oxidation.

On the role of Nb-related sites of an oxidized β-TiNb alloy surface in its interaction with osteoblast-like MG-63 cells.

Studying Biomimetic Coated Niobium as an Alternative Dental Implant Material to Titanium (in vitro and in vivo study)

  • AM Ali
  • Materials Science, Medicine
    Baghdad Science Journal
  • 2018
The in vitro experiments showed that the use of 14 days immersion in a concentrated simulated body fluid produced a layer of calcium phosphate on metal surfaces, which was higher in Nb than Ti, in coated than uncoated screws, and in 4 weeks than 2 weeks healing periods.

Effect of surface roughness of Ti, Zr, and TiZr on apatite precipitation from simulated body fluid

Results indicate that the pretreated Ti, Zr and TiZr alloy could form apatite coating on their surfaces, and the surface roughness also critically affected the bioactivity of these pretreated metallic samples.

An electrochemical impedance investigation of the behaviour of anodically oxidised titanium in human plasma and cognate fluids, relevant to dental applications

The present study reports a time-dependent electrochemical corrosion study of titanium in contact with the following biologically relevant solutions: SBF (simulating the inorganic part of human plasma), SBF with added ovalbumin (a protein simulating the post-implant environment) and human plasma.



Bioactive tantalum metal prepared by NaOH treatment.

The results indicate that a highly bioactive tantalum metal can be obtained by a simple chemical treatment and can form apatite in a short period even in the living body and bond to the bone through this apatites layer.

Preparation of bioactive Ti and its alloys via simple chemical surface treatment.

The present chemical surface modification is expected to allow the use the bioactive Ti and its alloys as artificial bones even under load-bearing conditions.

Formation of bioactive functionally graded structure on Ti-6Al-4V alloy by chemical surface treatment

An Al- and V-free sodium titanate hydrogel layer with a graded structure where the sodium titanate gradually decreases toward the interior, was formed on the surface of Ti-6Al-4V alloy, when the

Preparation of calcium phosphate coatings on titanium implant materials by simple chemistry.

It was observed that a precalcification procedure prior to immersion could significantly accelerate the Ca-P deposition process, and the formation of a microporous titanium dioxide thin surface layer on cpTi or Ti6Al4V could be the main reason for the induction of apatite nucleation and growth from HBSS.

Chemical modification of titanium surfaces for covalent attachment of biological molecules.

Results indicate that the linkage of the aminoalkylsilane to the oxidized surface is stable and that bound proteins such alkaline phosphatase and albumin retain their enzymatic activity and antigenicity, respectively.

Graded surface structure of bioactive titanium prepared by chemical treatment.

An NaOH treatment of pure titanium (Ti) forms a sodium titanate hydrogel surface layer with a smooth graded interface structure to the Ti metal substrate, which is intervened by a thick titanium oxide in simulated body fluid (SBF).

Transformation of Amorphous Calcium Phosphate to Crystalline Dahillite in the Radular Teeth of Chitons

A comparison of infrared spectra from individual teeth along the radula of a chiton (Polyplacophora, Mollusca) shows that the first-formed calcium phosphate mineral is amorphous. Over a period of