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Dental Implants: Surface Modification of cp-Ti Using Plasma Spraying and the Deposition of Hydroxyapatite

2003; Trans Tech Publications; Volume: 416-418; Linguagem: Inglês

10.4028/www.scientific.net/msf.416-418.669

1662-9760

Luci Cristina de Oliveira Vercik, Amilton Cajazeiras De Alencar, I. Ramires, Antônio Carlos Guastaldi,

Dental Implant Techniques and Outcomes

The commercial pure titanium (cp-Ti) is currently being used with great success in dental implants. In this work we investigate how the cp-Ti implants can be improved by modifying the metal surface morphology, on which a synthetic material with properties similar to that of the inorganic part of the bone, is deposited to facilitate the bone/implant bonding. This synthetic material is the hydroxyapatite, HA, a calcium phosphate ceramic. The surface modification consists in the application of a titanium oxide (TiO 2 ) layer, using the thermal aspersion - plasma spray technique, with posterior deposition of HA, using the biomimetic method. The X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray (EDX) and Diffuse Reflectance Infrared Fourier Transform (DRIFT) techniques have been used for characterizing phases, microstructures and morphologies of the coatings. The TiO 2 deposit shows a mixture of anatase, rutilo and TiO 2-x phases, and a porous and laminar morphology, which facilitate the HA deposition. After the thermal treatment, the previously amorphous structured HA coating, shows a porous homogeneous morphology with particle size of about 2-2.5 μm, with crystallinity and composition similar to that of the biological HA.