Low temperature calcium phosphate apatite and a method of...

Details Low temperature calcium phosphate apatite and a method of... Low temperature calcium phosphate apatite and a method of...

C - Chemistry, Metallurgy

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B

C01B 25/32 (2006.01) A61L 27/00 (2006.01) A61L 27/12 (2006.01) C01B 25/16 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2236572

In a method of preparing a low crystallinity calcium phosphate apatite, a low crystallinity calcium phosphate is precipitated from an aqueous solution comprising calcium and phosphate ions; collected from the solution; and dehydrated in a selected humidity and at a selected temperature or lyophilized to minimize growth and promote conversion to calcium phosphate apatite. The resultant calcium phosphate apatite is respectively, a block solid of increased strength, porosity and bioresorbability or a powder.

Procédé de préparation d'hydroxyapatite faiblement cristalline selon lequel un phosphate de calcium faiblement cristallin est précipité dans une solution aqueuse comprenant des ions calcium et phosphate, prélevé de ladite solution et déshydraté à une humidité et une température choisies ou lyophilisé pour réduire la croissance au minimum et favoriser la conversion en hydroxyapatite. L'hydroxyapatite qui en résulte est un bloc solide présentant une résistance, une porosité et une biorésorbabilité améliorées ou bien une poudre.

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