Effects of heat treatment on surface properties of different coatings with alkali treatment on titanium for dental implants

The temperature of the thermal treatments was 400, 600 and 800 ºC, since titanate varies its ratio of amorphous and crystalline phase in this range and therefore its properties. The assessment of results was carried out by means of Rockwell-C adhesion standard test, measurement of the initial contact angle by goniometry, X-ray diffraction and analytic scanning electronic microscopy. Characterized post thermal treatment samples, it was observed that the samples treated to 800 ºC presented a crystalline superficial structure, bad adherence and did not develop apatite growth on its surface.

Nevertheless, they presented sufficiently surface hydrophilic. On the contrary, the samples treated at 400 and 600 ° C presented superficially a partially crystallized phase, with good adhesion and good hydrophilicity. Through SEM-EDS, the formation of a homogeneous apatite layer was observed on their surfaces.