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US 2003/0157357 A1Published application
Dental mill blanks
Assignee3M Innovative Properties Company
InventorsRichard P. Rusin, Kevin M. Cummings, Roger J. Carufel
Life of this patent
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Abstract
A dental mill blank comprising a resin and a filler, wherein the blank is fabricated such that it passes a Thermal Shock Test. The mill blank is substantially free of cracks and discontinuities. Further, the blank may have superior cuttability and hardness.
Claims35
A carvable mill blank for making a dental prosthetic comprising
- a) a polymeric resin and
- b) a filler,
- wherein the blank is substantially free of cracks and fabricated such that the blank passes a Thermal Shock Test.
A carvable mill blank for making a dental prosthetic comprising
- a) a resin component and
- b) a fluoride releasing component.
A method of making a dental prosthetic comprising the steps of
- a) mixing a paste comprising a resin and a filler,
- b) shaping the paste into a desired blank configuration,
- c) minimizing material discontinuities from the paste,
- d) curing the paste into a blank,
- e) carving the blank into a desired shape and morphology,
- wherein the blank is substantially free of cracks and fabricated such that the blank passes a Thermal Shock Test.
3 more elements
Dependencies are inferred from the claim text.