The HAp is a biomaterial applied as dense, porous or coating bioceramics, in the medical and odontological areas. The aim of this work was obtain hydroxyapatite with characteristics that allow its application as dense or porous bodies, and coating studying three methods of syntheses: precipitation, neutralization and sol-gel in alcoholic media. Precipitation and neutralization showed the best results for thermal spraying stability, being thereafter reproduced in a pilot scale, in an open and closed system. Nitrogen atmosphere was used to avoid the formation of hydroxyapatite carbonate. The powders obtained by neutralization were used for coating titanium alloy substrate. Plasma spraying technique was used for deposition. On coating layer HAp was the main phase detected, showing a good adherence to the substrate. Porous ceramic bodies were obtained by gel casting foam with the HAp from the neutralization method in an inert atmosphere. The main techniques used on the characterization of powder, metallic substrates, coatings, porous and dense ceramic bodies were: particle size distribution (D), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). The HAp phase was detected as the majority in all conditions and results are no cytotoxicity.