Bioreactive material for a prosthesis or composite implants

Details Bioreactive material for a prosthesis or composite implants Bioreactive material for a prosthesis or composite implants

1992-08-24

1993-08-17

Isabella, David

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 66, A61F 228

Patent

active

052364585

ABSTRACT:
A sintered, shaped long-life dental implant or osseous prosthesis adapted for implantation into a human or animal body with chemical bonding to bone tissue. The implant or prosthesis is the result of sintering of a shaped mass of bioglass particles at or above a temperature softening the bioglass particles to form a bioreactive material having a composition comprising, by weight, 5-14% Na.sub.2 O, 0-12% P.sub.2 O.sub.5, 49-57% SiO.sub.2, and balance, no more than 33% CaO+CaF.sub.2, with the bioreactive material containing 0.5-7% CaF.sub.2. The implant or prosthesis has limited reactivity with bone tissue and a coefficient of expansion less than 10.sup.-5 K.sup.-1 from 0.degree. to 100.degree. C.

REFERENCES:
patent: 4159358 (1979-06-01), Hench et al.
patent: 4722870 (1988-02-01), White
patent: 4851046 (1989-07-01), Low et al.

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