For the first time, investigation and evaluation of quality influence of calcium phsopahte containing inorganic and biogenic starting materials on physiochemical properties of hydroxyapatite bioceramics was performed. Development of preparation technology of highly dispersive calcium hydroxide suspension for wet chemical precipitation synthesis of calcium phosphates are investigated. Synthesis technology in laboratory reactor of predictable and reproducible multiphase calcium phosphates for medical applications as bioceramics (with composition of variable stable phase of hydroxyapatite and resorbable phase of β-tricalcium phosphate) for implant materials production was performed. Influence of synthesis’ temperature, starting reagent’s concentration and ending pH on crystalline phase composition and thermal stability, molecular structure, morphology and microstructure of calcium phosphate products after synthesis and thermal treatment was investigated. Synthesized and thermal treated products of calcium phosphates were characterized using modern research technique: x-ray powder diffraction, field emission electron microscopy, Fourier transform infrared spectroscopy etc. Literature review gives an overview about calcium phosphates for medical applications, their physical chemical properties and synthesis methodologies, as well as special review about wet chemical precipitation method concerning period from 1939 till 2011. The doctoral theses is written in the Latvian language, consist of 163 pages. The theses contain 69 pictures, 23 tables and 149 references.