process to obtain microcrystalline modified the hydroxyapatite is that placed in the grinder suitable quantities resulting from the stechiometrii reagents model general 1, ca10 (po4) - xzx 6 s (sio4) y (oh) 2 s, where - means cation selected from group of mn2 +, cu2 +, zn2 mg2 + +, sr2 + x means a quantity of cation in a hydroksyapatycie and 0? x < 10,and y means the amount of silicon in the form of nitrate ortokrzemianowego sio44 - in domieszkowanym hydroksyapatycie and 0? y < 6, or the general formula 2, ca10 (po4) - x - yankee 6 s (sio3) y (oh) 2 s, where - means cation selected from group of mn2 +, cu2 +, zn2 mg2 +, +, sr2 +, x - means a quantity of cation in a hydroksyapatycie and 0? x < 10,and y means the amount of silicon in the form of nitrate metakrzemianowego sio34 - in domieszkowanym hydroksyapatycie and 0? y < 6, which are: source of calcium - calcium carbonate, calcium acetate or calcium oxide phosphorus (v) - hydrogen orthophosphate ammonium or ammonium dihydrogenorthophosphate (v) a source of manganese, magnesium, copper, zinc and strontium - carbonate, acetate,oxide and silicon source acetate or sodium metasilicate silicon and mixed and then the mixture is placed in a hydraulic press and using pressure 7 - 9 tonnes for at least 10 minutes forming tabletswhich basking using the following sequence: 400 - 450\u00b0c temperatures for 4 to 8 hours 700 - 750\u00b0c for another 4 to 8 hours and 950 - 1050\u00b0c and wygrzane tablets crumbles and the material is chopped.Sposób otrzymywania mikrokrystalicznego modyfikowanego hydroksyapatytu polega na tym, że umieszcza się w młynku odpowiednie ilości odczynników wynikające ze stechiometrii wzoru ogólnego 1, Ca10-xZx(PO4)6-y(SiO4)y(OH)2-y, gdzie Z - oznacza kation wybrany z grupy Mn2+, Mg2+, Cu2+, Zn2+, Sr2+, x - oznacza ilość kationu Z w modyfikowanym hydroksyapatycie i 0 ? x < 10, a y oznacza ilość krzemu w postaci anionu ortokrzemianowego SiO44- w domieszkowanym hydroksyapatycie i 0 ? y < 6, lub wzoru ogólne