Method and apparatus for preparing a ceramic dental restoration in one appointment
First Claim
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1. A method for fabricating a dental restoration for a patient from a machinable block comprising the steps of:
- a. obtaining a machinable block comprising a machinable, fully sintered zirconia ceramic material solid body comprisingan external surface defining an occlusal surface, a margin area that optionally, comprises a flat surface opposite the occlusal surface, and side surfaces between the occlusal surface and the margin area;
wherein the side surfaces consist essentially of non-planar surfaces; and
wherein the fully sintered zirconia ceramic material solid body comprises a cubic volume fraction between about 0.35 and about 0.95;
b. obtaining a milling strategy to control the conversion of the fully sintered zirconia ceramic material solid body into a dental restoration by a chair-side milling machine; and
c. milling the fully sintered zirconia ceramic material solid body into the dental restoration with the chair-side milling machine.
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Abstract
Methods and apparatus are disclosed to provide a patient with a monolithic ceramic dental restoration in one office visit. In some embodiments, a dentist is provided with a kit containing one or more machinable blocks, a chair-side milling machine to convert a selected machinable block into a finished dental restoration, and optionally, a scanner. Machinable blocks may have a fully sintered zirconia material solid body and a sintered zirconia mandrel. A plurality of machinable blocks may be provided in multiple shape, size, or shade selections.
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Citations
20 Claims
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1. A method for fabricating a dental restoration for a patient from a machinable block comprising the steps of:
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a. obtaining a machinable block comprising a machinable, fully sintered zirconia ceramic material solid body comprising an external surface defining an occlusal surface, a margin area that optionally, comprises a flat surface opposite the occlusal surface, and side surfaces between the occlusal surface and the margin area; wherein the side surfaces consist essentially of non-planar surfaces; and wherein the fully sintered zirconia ceramic material solid body comprises a cubic volume fraction between about 0.35 and about 0.95; b. obtaining a milling strategy to control the conversion of the fully sintered zirconia ceramic material solid body into a dental restoration by a chair-side milling machine; and c. milling the fully sintered zirconia ceramic material solid body into the dental restoration with the chair-side milling machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for preparing a zirconia dental restoration for a patient, the apparatus comprising
a. a chair-side milling machine for milling a fully sintered zirconia ceramic material into a dental restoration; - and
b. a plurality of machinable blocks that each comprise a fully sintered zirconia ceramic solid body comprising an external surface defining an occlusal surface, a margin area that optionally, comprises a flat surface opposite the occlusal surface, and side surfaces between the occlusal surface and the margin area; wherein the side surfaces consist essentially of non-planar surfaces; and wherein the fully sintered zirconia ceramic material solid body comprises a cubic volume fraction between about 0.35 and about 0.95. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification