Patent EP0104320A1 successfully refreshed from Google Patents.
EP0104320A1
Expired / Lapsed
EP
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Dental jacket crown, coping and method of construction
Assignee: Individual
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Filing: 1983-06-14
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Granted: —
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Expires: 2003-06-14
Abstract
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 multiple folds in the form of triangular like flaps or pleats (22). The folded foil represents the coping (16) of the present invention. The coping (16) is mounted over a die of the prepared tooth and the flaps (22) wrapped in overlapping formation and then adapted to the die. The die is removed and the structure heated preferably under a bunsen burner. A bonding material may be coated over the free standing structure if desired. A veneering material such as procelain is then coated over the structure to form the crown.
Inventors
- 👤 Itzhak Dr. Shoher
- 👤 Aharon Whiteman
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 15:40
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/70; A61C5/77
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
83 words
A jacket crown characterized by comprising a composite body including a thin foil (12) of high fusing temperature metal having a surface geometry defined by a multiple number of folded over pleats (22) with the thin foil (2) conforming to a die (18) of the tooth to which it has been adapted, a thin coating (14) of a noble based metal composition superimposed over one surface of said thin metal foil (12) and a relatively thick outer coating of a dental veneering material.
Claim 2
Dependent Claim
83 words
A jacket crown characterized by comprising a composite body including a thin foil (12) of high fusing temperature metal having a surface geometry defined by a multiple number of folded over pleats (22) with the thin foil (2) conforming to a die (18) of the tooth to which it has been adapted, a thin coating (14) of a noble based metal composition superimposed over one surface of said thin metal foil (12) and a relatively thick outer coating of a dental veneering material.
Claim 3
Dependent Claim
27 words
A jacket crown as claimed in Claim 1 wherein said thin foil (12) is composed of platinum and wherein said veneering material is fired on dental porcelain.
Claim 4
Dependent Claim
46 words
A jacket crown as claimed in anyone of Claims 1 or 2 wherein said noble based metal composition comprises from 50 to 100% gold and from 0 to 50 % of one or more of the following elements in combination:silver, palladium, platinum, iridium, copper and aluminum.
Claim 5
Dependent Claim
29 words
A jacket crown as claimed in anyone of Claims 1-3 wherein the weight of said noble based metal in said jacket crown is between about 200 to 300 miligrams.
Claim 6
Dependent Claim
60 words
A dental coping for a jacket crown restoration characterized by comprising a thin foil (12) of high fusing temperature metal arranged in a prefolded geometrical configuration having a multiple number of folds (22) each having a least two fold lines (18) and a coating (14) of a noble based metal composition superimposed upon one surface of said thin foil (12).
Claim 7
Dependent Claim
60 words
A dental coping for a jacket crown restoration characterized by comprising a thin foil (12) of high fusing temperature metal arranged in a prefolded geometrical configuration having a multiple number of folds (22) each having a least two fold lines (18) and a coating (14) of a noble based metal composition superimposed upon one surface of said thin foil (12).
Claim 8
Dependent Claim
17 words
A dental coping as defined in Claim 5 wherein said thin foil (12) is circular in shape.
Claim 9
Dependent Claim
45 words
A dental coping as defined in anyone of Claims 5-6 wherein said fold lines (18) radially extend from an unfolded area (20) substantially in the center of said coping with the unfolded area (20) being small compared to the total area of the foil (12).
Claim 10
Dependent Claim
19 words
A dental coping as defined in anyone of Claims 5-7 wherein said thin foil (12) is composed of platinum.
Claim 11
Dependent Claim
26 words
A dental coping as defined in anyone of Claims 5-8 further comprising a plurality of small slotted openings (26) arranged about the periphery of said coping.
Claim 12
Independent Claim
170 words
A method of forming a dental jacket crown characterized in the steps of preparing a thin metal foil (12) of high fusing temperature metal into a substantially circular substrate; coating one surface of the foil substrate (12) with a noble based metal (14) having a lower fusing temperature than that of the metal foil substrate (12); forming a multiple number of fold lines (18) in said coated foil substrate (10) to form an undulating surface geometry containing multiple folds (22); mounting said coated foil substrate (10) over a die (28) of the prepared tooth with the coated surface exposed; partially overlapping each fold (22) about said die in a clockwise or counterclockwise sequence with the foil (10) tightly wrapped about said die (28); adapting said tightly wrapped foil (10) to said die (28); removing said die (28) 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.
Claim 13
Independent Claim
170 words
A method of forming a dental jacket crown characterized in the steps of preparing a thin metal foil (12) of high fusing temperature metal into a substantially circular substrate; coating one surface of the foil substrate (12) with a noble based metal (14) having a lower fusing temperature than that of the metal foil substrate (12); forming a multiple number of fold lines (18) in said coated foil substrate (10) to form an undulating surface geometry containing multiple folds (22); mounting said coated foil substrate (10) over a die (28) of the prepared tooth with the coated surface exposed; partially overlapping each fold (22) about said die in a clockwise or counterclockwise sequence with the foil (10) tightly wrapped about said die (28); adapting said tightly wrapped foil (10) to said die (28); removing said die (28) 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.
Claim 14
Dependent Claim
29 words
A method as claimed in Claim 10 further comprising the step of forming small slotted openings (26)-about the periphery of said coated foil (10) substrate following the folding step.
Claim 15
Dependent Claim
19 words
A method as claimed in Claim 11 wherein said slotted openings (26) are formed along the fold lines (18).
Claim 16
Dependent Claim
16 words
A method as claimed in Claim 10 wherein said veneering material is a fired on porcelain.
Claim 17
Dependent Claim
32 words
A method as claimed in Claim 15 wherein said heating step is performed by placing said inner structure under the flame of a bunsen burner for between 5 to about 30 seconds.
References Cited (Backward Citations)
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