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US 7,942,963 B2Granted
Magnesium ammonium phosphate cement composition
AssigneeKyhon SARL
InventorMichael Zimmermann
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Abstract
This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for application in tooth cements, as bone replacement, as bone filler, as bone cement or as bone adhesive.
Claims13
A magnesium ammonium phosphate cement produced by a process comprising:
- providing an ammonium salt;
- providing a powder mixture having molar quantities of the components calcium (Ca), magnesium (Mg) and orthophosphate (P) in the mixture in the ranges 1.00<Ca/P<1.50 and 0<Mg/P<0.50;
- mixing the ammonium salt and the powder mixture with a mixing liquid to form a paste and achieve an uniform distribution of the liquid in the powder mixture;
- and reacting the components therein to form a microcrystalline magnesium ammonium phosphate cement.
1 more element
Dependencies are inferred from the claim text.