Ceramic fused fiber enhanced dental materials
AssigneeMaterials Evolution and Development USA, Inc.
InventorsMark B. Lyles, Ronald G. Ritsco
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Abstract
The preferred embodiment of the present invention provides novel and unique filler compositions and ceramic enhanced dental materials. The preferred embodiment of the composition and the ceramic dental restorative materials made therefrom comprise a rigid three-dimensional network of fibers fused together at their points of contact wherein said network is greater than 60% by volume void space, has mean pore diameters greater than 10 microns, or both.
Claims34
In a method for the direct filling of a cavity in a tooth, wherein said method includes filling said cavity with an initially liquid, settable filling material comprising a filler and a binder admixed therewith, thereafter permitting said material to harden in situ, the movements in said method comprising utilizing as the predominant component of said filler, a fused-fibrous material comprised of:
- from about 1% to about 50% by weight alumina;
- from about 50% to about 98% by weight silica;
- and
- from about 1% to about 5% by weight boron.
A fused-fibrous dental restorative composition comprising:
- a binder;
- and
- a filler, said filler comprised of about 1% to about 50% by weight alumina, from about 50% to about 98% percent by weight silica, and boron.
A method for the filling of a cavity in a tooth comprising:
- (a) filling said cavity with a settable filling material comprising a binder and filler, wherein said filler comprises at least 60% by volume void space and has mean pore diameters of greater than 10 microns and
- (b) thereafter allowing said material to harden.
A fused-fibrous ceramic dental restorative composition manufactured from:
- alumina fibers, silica fibers and from about 1% to about 5% boron nitride.
A fused-fibrous dental restorative composition comprising:
- alumina;
- and
- silica;
- whereby said composition is greater than about 60% by volume void space and has mean pore diameters greater than about 10 microns.
A porous reinforcement for dental restoration materials comprising:
- a rigid three-dimensional network of fibers fused together at their points of contact wherein said network has mean pore diameters greater than 10 microns.
A porous reinforcement for dental restoration materials comprising:
- a rigid three-dimensional network of fibers fused together at their points of contact wherein said network is greater than 60% by volume void space.
Dependencies are inferred from the claim text.