title: [Apatite-forming ability of pure titanium implant after micro-arc oxidation treatment].
abstract: OBJECTIVE
  To investigate the apatite forming ability of pure titanium implant after micro-arc oxidation treatment in simulated body fluid (SBF) and obtain implants with calcium phosphate (Ca-P) layers.
  
  
  METHODS
  The implants were immersed in (SBF) after micro-arc oxidation treatment for different time lengths, and their apatite forming ability and the morphology and constituents of the Ca-P layers formed on the sample surface were analyzed using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and energy dispersive electron probe.
  
  
  RESULTS
  After immersion in SBF, large quantities of Ca-P layers were induced on the surface of the samples. The Ca-P layers were composed of octacalcium phosphate and carbonated hydroxyapatite, and the crystals showed a plate-like morphology with an oriented growth.
  
  
  CONCLUSIONS
  The implants with micro-arc oxidation treatment show good apatite forming ability on the surface with rich calcium and phosphorus elements. The formed layers are composed of bone-like apatite including octacalcium phosphate and carbonated hydroxyapatite.
authors.affiliation: Stomatology Hospital of Nanfang Hospital; College of Stomatology, Southern Medical University, Guangzhou 510515, China. E-mail: tianzhihui1978@163.com.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Tian
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Lichao
authors.initials: L
authors.lastname: Wang
authors.forename: Kaihui
authors.initials: K
authors.lastname: Nan
mesh_terms: D001031:Apatites / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry*; D001826:Body Fluids / Q000737:chemistry*; D002130:Calcium Phosphates / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry; D010084:Oxidation-Reduction; D019736:Prostheses and Implants; D011897:Random Allocation; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D001031:Apatites; D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; C022045:octacalcium phosphate; D017886:Durapatite; C020243:calcium phosphate; D014025:Titanium