Apatite Formation Behavior on Tricalcium Phosphate (TCP) Porous Body in a Simulated Body Fluid

2006 ◽  
Vol 309-311 ◽  
pp. 251-254 ◽  
Author(s):  
Tomohiro Uchino ◽  
Chikara Ohtsuki ◽  
Masanobu Kamitakahara ◽  
Masao Tanihara ◽  
Toshiki Miyazaki
Keyword(s):  
Simulated Body Fluid ◽  
Tricalcium Phosphate ◽  
Porous Body ◽  
Body Fluid ◽  
The Other ◽  
Apatite Formation ◽  
Other Hand ◽  
Tcp Phases ◽  
Formation Behavior ◽  
Low Porosity

Apatite formation behavior of tricalcium phosphate (TCP) ceramics with different phases and porosity was investigated in a simulated body fluid (SBF, Kokubo solution). The pure α-TCP with 80% porosity did not form hydroxyapatite (HAp) on its surface after soaking in SBF for 7 days. On the other hand, the pure α-TCP with 20% porosity formed HAp on its surface after soaking in SBF within 7 days, and the biphasic TCP, which consisted of mixture of α-TCP and β-TCP and had 20% porosity, formed HAp within 1 day. The low porosity and coexistence of α-TCP and β-TCP phases in TCP ceramics were effective for apatite formation in SBF.

Apatite Formation Behavior on Tricalcium Phosphate (TCP) Porous Body in a Simulated Body Fluid

2006 ◽  
pp. 251-254
Author(s):  
Tomohiro Uchino ◽  
Chikara Ohtsuki ◽  
Masanobu Kamitakahara ◽  
Masao Tanihara ◽  
Toshiki Miyazaki
Keyword(s):  
Simulated Body Fluid ◽  
Tricalcium Phosphate ◽  
Porous Body ◽  
Body Fluid ◽  
Apatite Formation ◽  
Formation Behavior

Apatite Formation on Porous TCP In Vitro: A Comparative Study between Static and Dynamic RSBF Systems

2007 ◽  
Vol 280-283 ◽  
pp. 1581-1584
Author(s):  
Chun Lin Deng ◽  
Ji Yong Chen ◽  
Yang Leng ◽  
Xin Long Wang ◽  
Yao Wu ◽  
...  
Keyword(s):  
Simulated Body Fluid ◽  
Comparative Study ◽  
Dynamic System ◽  
Tricalcium Phosphate ◽  
Body Fluid ◽  
Apatite Formation ◽  
Static System ◽  
Inner Pore

Porous tricalcium phosphate ceramics were immersed in static and dynamic revised simulated body fluid (RSBF) at 37°C. Morphology, composition and phase of precipitates on TCP were identified by SEM, FTIR and TEM methods. FTIR and TEM results indicated the deposits on the inner pore walls of TCP were OCP, and SEM results implied that the deposited way of precipitates in static system was different from that in dynamic system.

Apatite-Forming Abilities of β-TCP and Hydroxyapatite Ceramics after Autoclaving

2006 ◽  
Vol 309-311 ◽  
pp. 247-250
Author(s):  
Akiko Obata ◽  
Toshihiro Kasuga
Keyword(s):  
Simulated Body Fluid ◽  
Tricalcium Phosphate ◽  
Body Fluid ◽  
Apatite Formation ◽  
Distilled Water ◽  
Surface Potentials ◽  
Hydroxyapatite Ceramics ◽  
Bonelike Apatite

Bonelike apatite formation abilities of β-tricalcium phosphate (β-TCP) and hydroxyapatite (HA) were enhanced by a simple and useful method of autoclaving in distilled water. By immersion tests using simulated body fluid, the apatite formation was observed on the surfaces of the autoclaved β-TCP and HA after 10 days and confirmed to be controllable by the autoclaving temperature, although the formation was not or dispersedly observed on non-autoclaved samples. Surface potentials and morphologies of the samples were decreased and roughed after the autoclaving

Electrochemical Characterization of Ti and Ti Base Alloys under Simulated Body Fluid Environment

2006 ◽  
Vol 512 ◽  
pp. 249-254 ◽  
Author(s):  
Shinji Fujimoto ◽  
H. Kusu ◽  
S. Katsuma ◽  
Masashi Sakamoto ◽  
Y.C. Tang
Keyword(s):  
Plastic Deformation ◽  
Simulated Body Fluid ◽  
Elastic Deformation ◽  
Body Fluid ◽  
The Other ◽  
Transient Current ◽  
Anodic Current ◽  
Current Increase ◽  
Other Hand ◽  
Fluid Environment

Ti and Ti based alloys are characterised by a continuous electrochemical monitoring and a rapid straining electrode technique in simulated body fluid environment. Materials examined are Ti, Ti-6Al-7Nb, Ti-6Al-4V and Ti-29Nb-13Ta-4.6Zr. Sterilized specimens were immersed in Hanks solution or Eagle’s minimum essential medium (MEM) solution. Electrode potential and polarization resistance were simultaneously and continuously measured up to 7 days. For all the specimens examined, the corrosion potential reached to a steady state in 2 days for both solutions. On the other hand, corrosion resistance increased monotonously for the period examined. Tensile specimens were rapidly elongated under potentio-static polarization to evaluate the transient current after exposure of newly-created surface. The anodic current appeared during both elastic and plastic deformation. For Ti alloys, anodic current started to increase gradually during elastic deformation, then increased more rapidly to reveal a maximum when straining was stopped, then decreased. Pure Ti, on the other hand, revealed the transient current after plastic deformation, but does not show any current increase during elastic deformation. The larger dissolution for a straining was observed as the following order; Ti, Ti-29Nb-13Ta-4.6Zr, Ti-6Al-7Nb, then Ti-6Al-4V.

scholarly journals Tri-Functional Calcium-Deficient Calcium Titanate Coating on Titanium Metal by Chemical and Heat Treatment

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 561 ◽  
Author(s):  
Seiji Yamaguchi ◽  
Phuc Thi Minh Le ◽  
Morihiro Ito ◽  
Seine A. Shintani ◽  
Hiroaki Takadama
Keyword(s):  
Antibacterial Activity ◽  
Body Fluid ◽  
Bone Growth ◽  
Solution Treatment ◽  
Calcium Titanate ◽  
The Other ◽  
Apatite Formation ◽  
Clinical Use ◽  
Ion Release ◽  
High Bone

The main problem of orthopedic and dental titanium (Ti) implants has been poor bone-bonding to the metal. Various coatings to improve the bone-bonding, including the hydroxyapatite and titania, have been developed, and some of them have been to successfully applied clinical use. On the other hand, there are still challenges to provide antibacterial activity and promotion of bone growth on Ti. It was shown that a calcium-deficient calcium titanate coating on Ti and its alloys exhibits high bone-bonding owing to its apatite formation. In this study, Sr and Ag ions, known for their promotion of bone growth and antibacterial activity, were introduced into the calcium-deficient calcium titanate by a three-step aqueous solution treatment combined with heat. The treated metal formed apatite within 3 days in a simulated body fluid and exhibited antibacterial activity to Escherichia coli without showing any cytotoxicity in MC3T3-E1 preosteoblast cells. Furthermore, the metal slowly released 1.29 ppm of Sr ions. The Ti with calcium-deficient calcium titanate doped with Sr and Ag will be useful for orthopedic and dental implants, since it should bond to bone because of its apatite formation, promote bone growth due to Sr ion release, and prevent infection owing to its antibacterial activity.

scholarly journals Hierarchical Structures and Shaped Particles of Bioactive Glass and ItsIn VitroBioactivity

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
U. Boonyang ◽  
F. Li ◽  
A. Stein
Keyword(s):  
Body Temperature ◽  
Simulated Body Fluid ◽  
Bioactive Glass ◽  
Body Fluid ◽  
Colloidal Crystals ◽  
Hierarchical Structures ◽  
The Other ◽  
Bioactive Glasses ◽  
Ordered Macroporous

In this study, bioactive glass particles with controllable structure and porosity were prepared using dual-templating methods. Block copolymers used as one template component produced mesopores in the calcined samples. Polymer colloidal crystals as the other template component yielded either three-dimensionally ordered macroporous (3DOM) products or shaped bioactive glass nanoparticles. Thein vitrobioactivity of these bioactive glasses was studied by soaking the samples in simulated body fluid (SBF) at body temperature (37°C) for varying lengths of time and monitoring the formation of bone-like apatite on the surface of the bioactive glass. A considerable bioactivity was found that all of bioactive glass samples have the ability to induce the formation of an apatite layer on its surface when in contact with SBF. The development of bone-like apatite is faster for 3DOM bioactive glasses than for nanoparticles.

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