Patent US3939598A successfully refreshed from Google Patents.
US3939598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic positioner with overbite or open bite correcting or relapse inhibiting capability
Assignee: Individual
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Filing: 1975-01-23
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Granted: 1976-02-24
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Expires: 1995-01-23
Abstract
Abstract In an orthodontic tooth positioning appliance of the type wherein all teeth normally engage the isthmus of the tooth receiving troughs substantially concurrently, the thickness of the isthmus is either (a) increased at the anterior teeth, relative to the thickness at the posterior teeth, for correcting or preventing relapse of a correction for overbite or (b) decreased at the anterior teeth, relative to the thickness at the posterior teeth to correct for or prevent relapse of a correction for open bite.
Inventors
- 👤 Earl O. Bergersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/08; A61C7/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
139 words
An orthodontic tooth positioning appliance which is generally U-shaped in plan view and which includes at least one tooth receiving trough of a size and shape for positioning at least one row of a patient's upper and lower row of teeth, said trough being defined by lingual and labial-buccal flanges and including an isthmus interconnecting said flanges, the thickness of the isthmus being such that as the side thereof opposite the trough rests against the occlusal surfaces of the row other than said one row, the anterior teeth of said one row engage the isthmus before the posterior teeth of said one row to exert a force against the anterior teeth depressing them into the gum to correct for overbite or to retain a previous overbite correction as the posterior teeth complete their movement towards engagement with the isthmus.
Claim 2
Dependent Claim
139 words
An orthodontic tooth positioning appliance which is generally U-shaped in plan view and which includes at least one tooth receiving trough of a size and shape for positioning at least one row of a patient's upper and lower row of teeth, said trough being defined by lingual and labial-buccal flanges and including an isthmus interconnecting said flanges, the thickness of the isthmus being such that as the side thereof opposite the trough rests against the occlusal surfaces of the row other than said one row, the anterior teeth of said one row engage the isthmus before the posterior teeth of said one row to exert a force against the anterior teeth depressing them into the gum to correct for overbite or to retain a previous overbite correction as the posterior teeth complete their movement towards engagement with the isthmus.
Claim 3
Dependent Claim
43 words
An orthodontic appliance according to claim 1, in which the thickness of the isthmus at the anterior teeth is one to two millimeters greater than the thickness would be for the anterior and posterior teeth of said row to engage the isthmus concurrently.
Claim 4
Dependent Claim
20 words
An orthodontic appliance according to claim 1, wherein the appliance includes only a single trough for treating the maxillary teeth.
Claim 5
Dependent Claim
20 words
An orthodontic appliance according to claim 1, wherein the appliance includes only a single trough for treating the mandibular teeth.
Claim 6
Dependent Claim
29 words
An orthodontic appliance according to claim 1, wherein the appliance includes both an upper trough and a lower trough for receiving both the maxillary teeth and the mandibular teeth.
Claim 7
Dependent Claim
27 words
An orthodontic appliance according to claim 1, wherein the appliance is a preformed appliance constructed for fitting a plurality of different patients within a given size range.
Claim 8
Dependent Claim
21 words
An orthodontic appliance according to claim 1, wherein the appliance is a custom made appliance, custom made for a specific patient.
Claim 9
Dependent Claim
141 words
An orthodontic tooth positioning appliance which is generally U-shaped in plan view and which includes at least one tooth receiving trough of a size and shape for positioning at least one row of a patient's upper and lower row of teeth, said trough being defined by lingual and labial-buccal flanges and having an isthmus interconnecting said flanges, the thickness of the isthmus being such that as the side thereof opposite the trough rests against the occlusal surfaces of the row other than said one row, the posterior teeth of said one row engage th isthmus before the anterior teeth of said one row to exert a force against the posterior teeth depressing them into the gum to correct for open bite or to retain a previous open bite correction as the anterior teeth complete their movement towards engagement with the isthmus.
Claim 10
Dependent Claim
141 words
An orthodontic tooth positioning appliance which is generally U-shaped in plan view and which includes at least one tooth receiving trough of a size and shape for positioning at least one row of a patient's upper and lower row of teeth, said trough being defined by lingual and labial-buccal flanges and having an isthmus interconnecting said flanges, the thickness of the isthmus being such that as the side thereof opposite the trough rests against the occlusal surfaces of the row other than said one row, the posterior teeth of said one row engage th isthmus before the anterior teeth of said one row to exert a force against the posterior teeth depressing them into the gum to correct for open bite or to retain a previous open bite correction as the anterior teeth complete their movement towards engagement with the isthmus.
Claim 11
Dependent Claim
43 words
An orthodontic appliance according to claim 8, in which the thickness of the isthmus at the posterior teeth is 1 to 2 millimeters greater than the thickness would be for the anterior and posterior teeth of said row to engage the isthmus concurrently.
Claim 12
Dependent Claim
20 words
An orthodontic appliance according to claim 8, wherein the appliance includes only a single trough for treating the maxillary teeth.
Claim 13
Dependent Claim
20 words
An orthodontic appliance according to claim 8, wherein the appliance includes only a single trough for treating the mandibular teeth.
Claim 14
Dependent Claim
29 words
An orthodontic appliance according to claim 8, wherein the appliance includes both an upper trough and a lower trough for receiving both the maxillary teeth and the mandibular teeth.
Claim 15
Dependent Claim
27 words
An orthodontic appliance according to claim 8, wherein the appliance is a preformed appliance constructed for fitting a plurality of different patients within a given size range.
Claim 16
Dependent Claim
21 words
An orthodontic appliance according to claim 8, wherein the appliance is a custom made appliance, custom made for a specific patient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |