title: Bioactive porous titanium: an alternative to surgical implants.
abstract: Porous titanium implants have been used to improve implant-bone attachment by the ingrowth of bone tissue within the porous structure. Despite the efficient bone adhesion of porous titanium implants, chemical bonds are required at bone-implant interface. These implants can become bioactive by a biomimetic precipitation process. The aim of this work was to enhance the bioactivity of pure porous titanium implants by biomimetic process. The samples immersed in a simulated body fluid promoted the nucleation and growth of calcium phosphate (Ca-P) crystals, such as hydroxyapatite (Hap), on the material surface. Scanning electron microscopy, energy dispersive spectroscopy, and Fourier transform infrared spectroscopy analyses revealed that a Ca-P deposition occurred without the need of pretreatments to improve the surface bioactivity. This present study indicates the potential for growing a bone-like Hap layer on porous titanium implants by biomimetic processes.
authors: Metallurgical and Materials Department, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil. waleria_medeiros@ig.com.br
authors: Waléria Silva
authors: WS
authors: de Medeiros
authors: Marize Varella
authors: MV
authors: de Oliveira
authors: Luiz Carlos
authors: LC
authors: Pereira
authors: Mônica Calixto
authors: MC
authors: de Andrade
mesh_terms: D040761:Biomimetic Materials; D032701:Biomimetics / Q000379:methods; D001826:Body Fluids / Q000737:chemistry; D002130:Calcium Phosphates / Q000737:chemistry; D020099:Coated Materials, Biocompatible; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry; D008422:Materials Testing; D008669:Metallurgy; D008855:Microscopy, Electron, Scanning; D016062:Porosity; D011208:Powders; D019736:Prostheses and Implants; D011474:Prosthesis Design; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; D011208:Powders; D017886:Durapatite; D014025:Titanium