Machinable glass-ceramics
AssigneePentron Corporation
InventorsDmitri Brodkin, Carlino Panzera, Paul Panzera
Life of this patent
Estimating the term…
Abstract
Micaceous glass-ceramics are useful in the fabrication of single and multi-unit dental restorations including but not limited to orthodontic appliances, bridges, space maintainers, tooth replacement appliances, splints, crowns, partial crowns, dentures, posts, teeth, jackets, inlays, onlays, facing, veneers, facets, implants, abutments, cylinders, and connectors by machining the glass-ceramic using CAM/CAM devices. The micaceous glass-ceramics are provided in a plurality of shades and colors to adequately match the colors and shades of teeth found in 95% or more of the human population.
Claims26
A method of making a micaceous dental material comprising:
- melting a starting glass composition at temperatures within the range of about 1200 to about 1650° C.;
- quenching the glass melt;
- pulverizing the quenched glass into a powder;
- forming the glass powder into pre-forms;
- and
- sintering the pre-forms to convert the glass into a glass-ceramic dental material.
A method of making a micaceous dental material comprising:
- melting a starting glass composition at temperatures within the range of about 1200 to about 1650° C.;
- quenching the glass melt;
- pulverizing the quenched glass into a powder;
- adding one or more additives selected from pigments, fluorescing agents, opacifying agents and mixtures thereof to the glass powder;
- forming the glass powder into pre-forms;
- and
- sintering the pre-forms to convert the glass into a glass-ceramic dental material.
A micaceous glass-ceramic for use in the fabrication of a dental restoration comprising a variety of colors and shades to adequately match the color and shade of a patient's tooth in the mouth.
A micaceous glass-ceramic for use in the fabrication of a dental restoration comprising a variety of colors and shades to adequately match the colors and shades of teeth found in 95% or more of the human population.
A micaceous glass-ceramic for use in the fabrication of a dental restoration comprising a variety of colors and shades to adequately match the color and shade of a patient's teeth in the mouth wherein the glass-ceramic is manufactured from glass and additives selected from the group consisting of pigments, fluorescing agents, opacifying agents and mixtures thereof, and whereby the additives have average particle size equal to or exceeding about 15 microns and not larger than about 60 microns.
Dependencies are inferred from the claim text.