Patent US3602993A successfully refreshed from Google Patents.
US3602993A
Expired / Lapsed
US
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Dental device and process using it to make jackets and fixed bridgework
Assignee: Individual
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Filing: 1967-11-09
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Granted: 1971-09-07
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Expires: 1987-11-09
Abstract
Abstract A hollow dental device that is cylindrical or of other straight wall configuration, except adjacent at one end, is used with modeling compound to make a coping in the process of making jackets and fixed bridgework. The device is contoured at that end to insure retention within the plaster impression made during the process. This dental device is relatively rigid and very resilient as compared with conventional copper bands.
Inventors
- 👤 Bernard D Kenney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:46
CPC Classifications
A; A61; A61C; A61C9/00; A61C5/00; A61C5/70; A61C5/77
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
223 words
A process for making a jacket or the like which comprises: 1. making in modeling compound disposed in a metal band an accurate impression of the entire surface configuration of the prepared part of the tooth; 2. prEparing from said modeling compound in the metal band a die having at one end an accurate replica of the prepared part of the tooth; 3. forcing a modeling compound disposed in a relatively rigid and resilient hollow dental device against and over the prepared part of the tooth to form in the modeling compound in the dental device a cavity having the configuration corresponding to at least the major length of the prepared part of the tooth; 4. preparing a plaster wash impression of at least adjacent teeth and the dental device and the molding compound in it on the prepared part of the tooth; 5. removing the plaster impression and with it the dental device and the modeling compound in it; and 6. placing the replica portion of the die in the cavity of the modeling compound in the dental device maintained in the plaster impression to form an assembly from which can be obtained a working model containing the die accurately positioned relative to a replica of at least adjacent teeth for the preparation of the jacket or the like from the model.
Claim 2
Dependent Claim
223 words
A process for making a jacket or the like which comprises: 1. making in modeling compound disposed in a metal band an accurate impression of the entire surface configuration of the prepared part of the tooth; 2. prEparing from said modeling compound in the metal band a die having at one end an accurate replica of the prepared part of the tooth; 3. forcing a modeling compound disposed in a relatively rigid and resilient hollow dental device against and over the prepared part of the tooth to form in the modeling compound in the dental device a cavity having the configuration corresponding to at least the major length of the prepared part of the tooth; 4. preparing a plaster wash impression of at least adjacent teeth and the dental device and the molding compound in it on the prepared part of the tooth; 5. removing the plaster impression and with it the dental device and the modeling compound in it; and 6. placing the replica portion of the die in the cavity of the modeling compound in the dental device maintained in the plaster impression to form an assembly from which can be obtained a working model containing the die accurately positioned relative to a replica of at least adjacent teeth for the preparation of the jacket or the like from the model.
Claim 3
Dependent Claim
25 words
prEparing from said modeling compound in the metal band a die having at one end an accurate replica of the prepared part of the tooth;
Claim 4
Dependent Claim
25 words
prEparing from said modeling compound in the metal band a die having at one end an accurate replica of the prepared part of the tooth;
Claim 5
Dependent Claim
43 words
The process of claim 1 wherein the hollow dental device has an end portion that is outwardly flared and that end is closer to the proximal end of the prepared tooth when forming a cavity in the modeling compound in the dental device.
Claim 6
Dependent Claim
15 words
The process of claim 2 wherein the hollow dental device is a transparent plastic tube.
Claim 7
Dependent Claim
52 words
forcing a modeling compound disposed in a relatively rigid and resilient hollow dental device against and over the prepared part of the tooth to form in the modeling compound in the dental device a cavity having the configuration corresponding to at least the major length of the prepared part of the tooth;
Claim 8
Dependent Claim
52 words
forcing a modeling compound disposed in a relatively rigid and resilient hollow dental device against and over the prepared part of the tooth to form in the modeling compound in the dental device a cavity having the configuration corresponding to at least the major length of the prepared part of the tooth;
Claim 9
Dependent Claim
22 words
The process of claim 3 wherein the dental device is generally cylindrical from the outwardly flared end portion to the other end.
Claim 10
Dependent Claim
27 words
preparing a plaster wash impression of at least adjacent teeth and the dental device and the molding compound in it on the prepared part of the tooth;
Claim 11
Dependent Claim
27 words
preparing a plaster wash impression of at least adjacent teeth and the dental device and the molding compound in it on the prepared part of the tooth;
Claim 12
Dependent Claim
17 words
removing the plaster impression and with it the dental device and the modeling compound in it; and
Claim 13
Dependent Claim
17 words
removing the plaster impression and with it the dental device and the modeling compound in it; and
Claim 14
Dependent Claim
45 words
The process of claim 3 wherein the hollow dental device is frustoconical from the outwardly flared end portion to the other end with the larger diameter of the frustoconical shape being adjacent to the outwardly flared end and wherein the dental device is cellulose acetate.
Claim 15
Dependent Claim
61 words
placing the replica portion of the die in the cavity of the modeling compound in the dental device maintained in the plaster impression to form an assembly from which can be obtained a working model containing the die accurately positioned relative to a replica of at least adjacent teeth for the preparation of the jacket or the like from the model.
Claim 16
Dependent Claim
61 words
placing the replica portion of the die in the cavity of the modeling compound in the dental device maintained in the plaster impression to form an assembly from which can be obtained a working model containing the die accurately positioned relative to a replica of at least adjacent teeth for the preparation of the jacket or the like from the model.
References Cited (Backward Citations)
US3390458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |