✦ LIBER ✦

Calcium-phosphate surface coating by casting to improve bioactivity of titanium

✍ Scribed by Sohmura, Taiji ;Tamasaki, Hideki ;Ohara, Toru ;Takahashi, Junzo

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 562 KB
Volume: 58
Category: Article
ISSN: 0021-9304
DOI: 10.1002/jbm.1044

No coin nor oath required. For personal study only.

✦ Synopsis

In order to improve the bioactivity of titanium, an original surface treatment was attempted with the use of a casting technique was attempted. Pure titanium was cast into a special graphite mold in which the cavity wall was coated with hydroxyapatite (HA) powder. According to analyses of X-ray diffraction and EDX, the existence of HA and CaO and uptake of Ca and P on the surface of the titanium castings were identified. By immersing the specimen in Hank's solution, the concentrations of Ca and P on the surface increased with immersion time, and the formation of a thin layer with characteristics of spherical HA precipitates was observed after 1 week. The concentrations of Ca and P elements and the Ca/P ratio on the HA layer increased with immersion time. The formation of the HA layer on the titanium cast by this treatment was significantly accelerated compared with pure titanium. The present surface treatment of Ti is expected to improve early bone fixation of Ti implants.

📜 SIMILAR VOLUMES

Modification of calcium-phosphate coatin

Modification of calcium-phosphate coatings on titanium by recombinant amelogenin

✍ Wen, H. B. ;Moradian-Oldak, J. 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 508 KB

## Abstract Amelogenin proteins, the principal components of the developing dental enamel extracellular matrix, have been postulated to facilitate the elongated and oriented growth of the carbonated apatite crystals during enamel formation. We previously reported that amelogenin caused modulation o

Surface Modification of Nickel/Titanium

Surface Modification of Nickel/Titanium Alloy and Titanium Surfaces via a Polyelectrolyte Multilayer/Calcium Phosphate Hybrid Coating

✍ Sylvia Schweizer; Thomas Schuster; Mathias Junginger; Gerd Siekmeyer; Andreas Ta 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 699 KB

## Abstract The report shows that simple LbL deposition of positively charged chitosan and negatively charged heparin can be used to efficiently modify the native surface of both NiTi and Ti without any previous treatments. Moreover, mineralization of the polymer multilayers with calcium phosphate

Preparation of calcium phosphate coating

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

✍ Wen, H. B. ;de Wijn, J. R. ;Cui, F. Z. ;de Groot, K. 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 767 KB

A two-step chemical treatment has been developed in our group to prepare commercially pure titanium (cpTi) surfaces that will allow calcium phosphate (Ca-P) precipitation during immersion in a supersaturated calcification solution (SCS) with ion concentrations of [Ca2+] = 3.10 mM and [HPO4(2-)] = 1.

Histological and biomechanical evaluatio

Histological and biomechanical evaluation of calcium phosphate coatings applied through surface-induced mineralization to porous titanium implants

✍ Wheeler, D. L. ;Campbell, A. A. ;Graff, G. L. ;Miller, G. J. 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 2 views

The purpose of this pilot study was to evaluate surfaceinduced mineralization (SIM) as a potential technique to apply ceramic coatings to metal orthopaedic implants. Cylindrical titanium porous-coated implants were either coated by SIM or plasma-spray (PLS) techniques with calcium phosphate, or left

Effect of surface roughness, porosity, a

Effect of surface roughness, porosity, and a resorbable calcium phosphate coating on osseointegration of titanium in a minipig model

✍ Markus L. R. Schwarz; Markus Kowarsch; Steffen Rose; Kristianna Becker; Tamara L 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 444 KB 👁 1 views

## Abstract The aim of this study was to compare the osseointegration of four different implant surfaces in the Göttingen minipig femur model. They were prepared by glasspearlblasting (A), sandblasting (B) and titaniumplasma spraying (C and D). Surface D received additionally an electrochemically d

Local induction of calcium phosphate for

Local induction of calcium phosphate formation on TiO2 coatings on titanium via surface treatment with a CO2 laser

✍ Moritz, N. ;Jokinen, M. ;Peltola, T. ;Areva, S. ;Yli-Urpo, A. 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 222 KB

## Abstract Sol–gel‐derived TiO~2~ coatings are known to promote bonelike hydroxyapatite formation on their surfaces __in vitro__ and __in vivo__. Hydroxyapatite integrates into bone tissue. In some clinical applications, the surface of an implant is simultaneously interfaced with soft and hard tis