Аннотация:Despite the wide range of materials for bone grafting none of them meets all the
requirements of the modern reconstructive surgery, which makes an active search for the new and
improvement of existing materials. According to the actual regenerative approach the emphasis is
placed upon the replacement of the ceramic material with the native biological material of the
growing bone. The ceramic material plays the role of an active source of many chemical elements,
which are essential to the new bone building. Magnesium ion is an important factor for bone
metabolism, for the bone matrix formation and its mineralization. It can also affect the activity of
osteoblasts and osteoclasts, i.e. the rate of bone growth. Therefore it is important to create
materials, which contain phases that are capable of highlighting magnesium ions in the process of
dissolving. Such ceramic materials can be made from powder mixtures of different calcium and
magnesium phosphates such as dimagnesium phosphate or magnesium pyrophosphate. To obtain
the resorbable ceramic material based on magnesium pyrophosphate with the ratio of Mg/P = 1, a
method for preparing powder precursor of this phase has to be developed. Newberyite
(MgHPO4•3H2O) and struvite ((NH4)MgPO4•6H2O) provide an example of such powder precursors
with the ratio of Mg/P = 1.
Nanosize hydrous magnesium phosphates powders were obtained from the water solutions
of hydrogen phosphates (disodium (Na2HPO4•12H2O), dipotassium (K2HPO4•3H2O), diammonium
((NH4)2HPO4)) and magnesium chloride (MgCl2•6H2O). Different sequence of solution pouring was
used. After synthesis from disodium hydrogen phosphate and magnesium chloride the powders
comprised of newberyite. After synthesis from dipotassium hydrogen phosphate and magnesium
chloride the powders comprised a mixture of newberyite (MgHPO4•3H2O) and trimagnesium
diphosphate (Mg3(PO4)2•22Н2О). After synthesis from diammonium hydrogen phosphate and
magnesium chloride the powders comprised of struvite ((NH4)MgPO4•6H2O). Following the heattreatment
phase, composition of the samples depend on the firing temperature and the
composition of the initial powders. After firing Mg2P2O7 and Mg3(PO4)2 were present in the samples.
All the synthesized powders can be used as precursor powders for the ceramic material comprising
magnesium pyrophosphate phase. The present work develops the idea of getting powders for
resorbable ceramics, which contain phases that are capable of to highlight magnesium ions in the
process of dissolving from synthetic newberyite and struvite powders.