Dental jacket crown, coping and method of forming a crown
First Claim
1. A jacket crown comprising a composite body including a thin foil of high fusing temperature metal having a surface geometry conforming to a die to which it has been adapted with the foil having at least a minimum of three folded over pleats with each pleat forming a triangular like flap in the unfolded position, a thin coating of a noble based metal composition superimposed over one surface of said thin metal foil and disposed beneath the folded over pleats and a relatively thick outer coating of a dental veneering material.
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Abstract
The dental jacket crown of the present invention is prepared from a thin metal foil substrate which is coated with a noble based metal composition having a low fusing temperature and folded in a predetermined manner to form a multiple number of triangular like flaps or pleats. The folded foil represents the coping of the present invention. The coping is mounted over a die of the prepared tooth and the flaps wrapped in overlapping formation and then adapted to the die. The die is removed and the structure heated preferably under a bunsen burner. A veneering material such as porcelain is then coated over the structure to form the crown.
21 Citations
16 Claims
- 1. A jacket crown comprising a composite body including a thin foil of high fusing temperature metal having a surface geometry conforming to a die to which it has been adapted with the foil having at least a minimum of three folded over pleats with each pleat forming a triangular like flap in the unfolded position, a thin coating of a noble based metal composition superimposed over one surface of said thin metal foil and disposed beneath the folded over pleats and a relatively thick outer coating of a dental veneering material.
- 6. A dental coping for a jacket crown restoration comprising a thin foil of high fusing temperature metal arranged in a prefolded geometrical configuration having at least a minimum of three pleated sections with each pleated section represented by fold lines which form a triangular like flap and a coating of a noble based metal composition superimposed upon the surface of said thin foil over said pleated sections.
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12. A method of forming a dental jacket crown comprising
preparing a thin metal foil of high fusing temperature metal into a substantially circular substrate; -
coating one surface of the foil substrate with a noble based metal composition having a low fusing temperature of below about 1070°
C.;forming a multiple number of fold lines in said coated foil substrate with each two adjacent fold lines substantially defining a triangular like flap; mounting said coated foil substrate over a die of the prepared tooth with the coated surface exposed; partially overlapping each flap about said die in a clockwise or counterclockwise sequence with the foil tightly wrapped about said die; adapting said tightly wrapped foil to said die; removing said die for providing an inner structure for said jacket crown; heating said inner structure above the low fusing temperature of said noble based metal composition; and coating a veneering material over said inner structure. - View Dependent Claims (13, 14, 15, 16)
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Specification