[Experimental study of fast formation of biomimetic apatite coatings on pure titanium surface].
OBJECTIVE
To investigate calcium-phosphate coating on commercial pure titanium substrate using a fast biomimetic procedure.


METHODS
The titanium specimens were divided into two groups, group A and group B. The specimens of group A were only treated with the mixture of H2SO4/HCl for 30 min. The specimens of group B were treated with the mixture of H2SO4/HCl for 30 min, immersed into 5 mol/L NaOH solution at 60 degrees C for 24 h, and then heated to 600 degrees C and maintained for 1 h. All specimens were soaked into simulated body fluid-A (SBF) and SBF-B for each day. The surface morphology was observed by field scanning electron microscopy.


RESULTS
Dense calcium-phosphate coating deposited on all the titanium surfaces of two groups. The calcium-phosphate coating consisted of spheric structure with a diameter of 1 approximately 3 microm, which was proved to be hydroxycarbonate apatite with the analysis of X-ray diffraction.


CONCLUSIONS
Thin hydroxycarbonate apatite coating can deposited on pure titanium using a fast biomimetic procedure.
He
Fu-ming
FM
Department of Prosthodontics, The Affiliated Stomatologic Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310006, China.
Chen
Song
S
Liu
Li
L
Zhao
Shan-shan
SS
Sheng
Zu-li
ZL
Wang
Xiao-xiang
XX
D001031:Apatites / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D015921:Dental Implants; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D001031:Apatites; D020099:Coated Materials, Biocompatible; D015921:Dental Implants; D014025:Titanium