Resorbable bioactive calcium phosphate cement

Details Resorbable bioactive calcium phosphate cement Resorbable bioactive calcium phosphate cement

1991-01-10

1992-09-22

Group, Karl

Drug, bio-affecting and body treating compositions

Inorganic active ingredient containing

Phosphorus or phosphorus compound

106 35, 501 1, C09K 300

Patent

active

051493683

ABSTRACT:
This invention provides a calcium phosphate cement with relatively high surface pH which is very beneficial from the biocompatibility point of view. When calcium phosphate salts react with an acidic reagent to form cement, it normally involves the dissolution and recrystallization process. The acidity of the setting cements depends strongly on the nature of the calcium phosphate salt used, the acidity of the setting reagent, and the reaction rate. The present invention uses high alkaline calcium phosphate ceramics such as tetracalcium phosphate alone or together with calcium phosphate ceramics such as .alpha.-tricalcium phosphate as base cementing powder to increase the surface pH of the setting cement.

REFERENCES:
patent: 4668295 (1987-05-01), Bajpai

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