Ceramic hydroxylapatite material

Details Ceramic hydroxylapatite material Ceramic hydroxylapatite material

C - Chemistry, Metallurgy

09

K

261/35, 23/68

C09K 3/00 (2006.01) A61C 13/00 (2006.01) A61L 27/12 (2006.01) A61L 27/46 (2006.01) C01B 25/32 (2006.01) C04B 35/00 (2006.01) C04B 35/447 (2006.01) A61F 2/00 (2006.01)

Patent

CA 1096582

ABSTRACT OF THE DISCLOSURE A novel ceramic form of hydroxylapatite and of a mixture of hydroxyiapatite and whitlockite, dental restorative compositions and dental and surgical phosthetic materials containing said form. The ceramic is prepared by reacting calcium ion with phosphate ion in aqueous medium and at pH of about 10-12 to produce A gelatinous precipitate of a phosphate of calcium, separating said precipitate from solution, and heating said precipitate up to a temperature of at least 1000°C. but below that at which appreciable decomposition of hydroxylapatite occurs for sufficient time to effect the sintering and substantially maximum densification of the resulting product.

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