Method for manufacturing dental restorations
First Claim
1. A process for fabricating a dental material comprising:
- mixing ceramic powder and one or more media together to achieve homogeneity throughout the mixture and to form a putty;
applying the putty to a model to conform to the shape of the model and to form a ceramic core material; and
sintering the model with the putty thereon for a time of less than about three hours to provide a dental ceramic core material.
5 Assignments
0 Petitions
Accused Products
Abstract
A ceramic tape is provided in its green state so that it is malleable and formable to a mold for forming a dental restoration, but will not break or crack as it is applied to the mold. Pressure may be applied to further form or adapt the ceramic tape to the shape of the mold. Heat is applied simultaneously with pressure or in a separate step to achieve high density and strength in the ceramic material. A vacuum atmosphere may be used with the application of pressure and/or heat. One or more layers of surface material such as porcelain or composite resin may be applied to the ceramic to form the dental restoration. The process is useful in the manufacture of dental materials or 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.
Also provided is a ceramic powder in combination with one or more media materials to form a homogeneous mixture. The mixture may then be used to form a dental restoration as is or may be used to form feedstock such as filaments or wires which are then used to fabricate a dental restoration. The filaments or wires may be used in a fused deposition-modeling machine to build dental restorative materials by computer aided design software.
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Citations
11 Claims
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1. A process for fabricating a dental material comprising:
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mixing ceramic powder and one or more media together to achieve homogeneity throughout the mixture and to form a putty;
applying the putty to a model to conform to the shape of the model and to form a ceramic core material; and
sintering the model with the putty thereon for a time of less than about three hours to provide a dental ceramic core material. - View Dependent Claims (2, 3, 4, 5, 6, 11)
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7. A process for fabricating a dental material comprising:
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applying a putty to a model to conform to the shape of the model and to form a ceramic core material, whereby the putty comprises ceramic powder and one or more media having homogeneity throughout the putty; and
sintering the model with the putty thereon for a time of less than about three hours to provide a dental ceramic core material. - View Dependent Claims (8, 9)
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10. A process for fabricating a dental material comprising:
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mixing ceramic powder and one or more media together to achieve homogeneity throughout the mixture and to form a putty;
applying the putty to a model to conform to the shape of the model and to form a ceramic core material; and
sintering the model with the putty thereon for a time in the range of about one minute to about five hours to provide a dental material.
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Specification