Zirconium Post
OwnerJoseph Ruggirelloinventor
Life of this patent
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Abstract
A dental post made from a zirconia compound, wherein said zirconia compound is at least one of a pure zirconia puck, a zirconia stabilized with yttria (yttrium oxide) compound, a cubic zirconia compound, a Partially Stabilized Zirconia (PSZ) compound, a Tetragonal Zirconia Polycrystal (TZP) compound and a Zirconium based bulk metallic glass (BMG).
Claims20
A dental post, comprising a zirconia compound, wherein said zirconia compound is at least one of a pure zirconia puck, a zirconia stabilized with yttria (yttrium oxide) compound, a cubic zirconia compound, a Partially Stabilized Zirconia (PSZ) compound, a Tetragonal Zirconia Polycrystal (TZP) compound and a Zirconium based bulk metallic glass (BMG).
A method of producing a dental post comprising:
- milling a zirconium compound in a CNC machine until a preliminary dental post is obtained;
- pressing said preliminary dental post in a hot isostatic pressing (HIP) machine at a first temperature of 800-2000 Celsius and in an argon atmosphere of pressure is 1,035-2,070 bar for a pressing time;
- and
- remilling the preliminary dental post in the CNC machine until the dental post is produced.
A method of producing a dental post comprising:
- injecting a zirconium compound into a mold of a micro-injection molding machine;
- alternating the injection of a layer of a layering material, said layering material is at least one of a titanium element, a hydroxyapatite (Ti-HA-Ti) compound, a hydroxyapatite (Zr02-HA-Ti) compound, an aluminum oxide compound, said zirconium compound and a hydroxyapatite (Al203-HA-Ti) compound to form a pre-sinter post;
- and
- heating the pre-sinter post in a hot isostatic pressing (HIP) machine at a first temperature of 800-2000 Celsius and in an argon atmosphere of pressure is 1,035-2,070 bar for a pressing time to produce a post-sinter post;
- and
- milling the post-sinter post in a CNC machine until a dental post is produced.
A dental filling compound to affix a crown to a dental post;
- said dental filling compound comprising:
- 45% to 85% of a zirconia powder;
- 14% to 54 of a hydraulic inorganic binder;
- 0.5% or less of at least one of a maleic acid, a citric acid, and a tartaric acid as a weakly acidic hardening control agent;
- and
- 5% or less of a pozzolan component.
Dependencies are inferred from the claim text.