The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1993
Filed:
Aug. 24, 1992
Paul Ducheyne, Byrn Mawr, PA (US);
Louis Van Hove, Mol, BE;
Evert Schepers, Louvain, BE;
Raymond Kempenners, Mol, BE;
Marcel De Clercq, deceased, late of Rotsella, BE;
S.A. FBFC International, Brussels, BE;
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.