Calcium phosphate hydroxyapatite precursor and methods for makin

Details Calcium phosphate hydroxyapatite precursor and methods for makin Calcium phosphate hydroxyapatite precursor and methods for makin

1995-06-07

1997-12-09

Langel, Wayne

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

C01B 2532

Patent

active

056957297

ABSTRACT:
Calcium phosphate compositions that are particularly useful and unique as orthopedic and dental cements and remineralizers, as well as methods and kits for their use, and the resulting products are disclosed. The compositions comprise tetracalcium phosphate which has been prepared from a mixture with a calcium to phosphorous ratio of less than 2, or prepared and maintained under substantially anhydrous conditions prior to use or, preferably, both. The novel compositions are converted substantially to hydroxyapatite upon setting, are substantially gradually resorbable and replaced by bone when implanted in contact with living bony tissue, and offer distinct advantages in terms of cement strength, setting time and reliability and other properties.

REFERENCES:
patent: 5342441 (1994-08-01), Mandai et al.

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