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US 4,980,124 AGranted
Dental restoration and method for its production
OwnerDavid C. Dimmerinventor
Life of this patent
Estimating the term…
Abstract
An improvement is provided in the so-called "Foil" system for producing jacketed porcelain dental crowns. One of the most significant improvements is the formation of a crush-resistant coping comprised of a die-conforming noble metal foil and a bonded sintered alloy. Extremely strong crowns are produced in a short order of time by applying the porcelain over such a coping.
Claims19
A method for forming a dental restoration for a prepared tooth comprising:
- (i) conforming a dentally acceptable, malleable foil to the shape of a die of the prepared tooth
- (ii) applying effective, inchoate crush-resistant improving amounts of a dentally acceptable particulate alloy coating unto the external surface of said conforming foil
- (iii) heating said coated foil for a time and at a temperature sufficient to sinter said coating and foil into a crush-resistant, unitary coping, said coating being substantially uniform.
Dependencies are inferred from the claim text.