Apatite composite ceramics

Details Apatite composite ceramics Apatite composite ceramics

1985-12-19

1987-11-24

Bell, Mark L.

Dentistry

Prosthodontics

Dental implant construction

501 1, 501 10, 501 17, 501 32, 501 57, 623 18, 106 35, A61C 800, C03C 1016

Patent

active

047086521

ABSTRACT:
This invention provides a novel apatite composite ceramic useful for implants such as artificial dental root, artificial bone or the like. The apatite composite ceramic comprises an interconnected structure of fluorapatite phase and an at least partially crystallized biologically active glass phase, which ceramic is obtained by reaction-sintering at a sintering temperature of 700.degree.-1100.degree. C. at a pressure of at least atmospheric pressure a powder mixture of a synthetic hydroxyapatite (A) and a biologically active glass (B) containing fluoride ions and having a crystallization temperature below the sintering temperature in a weight ratio of A/B ranging from 60/40 to 30/70. The reaction-sintered material has excellent biological affinity and high mechanical strength.

REFERENCES:
patent: 4103002 (1978-07-01), Hench et al.
patent: 4135935 (1979-01-01), Pfeil et al.
patent: 4437192 (1984-02-01), Fujiu et al.

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