US4523908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for positioning and protecting an orthodontic bracket
Assignee: Individual
•
Filing: 1984-06-25
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Granted: 1985-06-18
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Expires: 2004-06-25
Abstract
Abstract The invention relates to a device, preferably of disposable type, for application to orthodontic brackets for retaining an orthodontic harmonic wire, either said brackets are of the type welded to an orthodontic band, or of the type supported on a plate for direct fastening. The device serves the purpose of facilitating the positioning of said orthodontic brackets on teeth, at a predetermined distance from the incisal edge thereof, and protecting the bracket from the entrance of the fastening cement, such a bracket having the slot and hooks for the binding of the orthodontic wire. The device comprises a shell part forming a housing for the slot element of the bracket, and a positioning part made to predetermined size and suitable to bear on the incisal edge of the tooth.
Inventors
- 👤 Giovanni Drisaldi
- 👤 Eugenio Fontana
- 👤 Virgilio Manetti
- 👤 Franco Segu
- 👤 Sandro Segu
- 👤 Bruno Segu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:11
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/125; A61C7/14; A61C7/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
238 words
A one-piece disposable plastic device for applying, to a tooth, an orthodontic bracket provided with at least one slot for receiving an orthodontic wire for orthodontic use, comprising a positioning portion in the form of a small round rod at one end of said device having a rounded positioning surface on one side thereof that bears directly on the incisal edge or top of a tooth and having an opposite surface on the other side thereof that is an extreme end surface of said device, and located at a predetermined distance relative to the axis of said slot, and at the other end of said device a shell portion for covering said slot, said shell portion having a flat upright surface against which said slot opens, said two portions being integral with each other and having a total length less than the exposed height of a tooth, said shell portion having a housing of sufficient size to receive the element or elements of the bracket provided with slot, and the hooks for the fastening of the orthodontic wire, said shell having an aperture for the passage of the neck joining said bracket to the tooth or to the band, said aperture being of such size as to accurately accommodate said neck with slight force fitting about said neck and with the surfaces of the shell and neck that are next to the tooth substantially flush with each other.
Claim 2
Dependent Claim
238 words
A one-piece disposable plastic device for applying, to a tooth, an orthodontic bracket provided with at least one slot for receiving an orthodontic wire for orthodontic use, comprising a positioning portion in the form of a small round rod at one end of said device having a rounded positioning surface on one side thereof that bears directly on the incisal edge or top of a tooth and having an opposite surface on the other side thereof that is an extreme end surface of said device, and located at a predetermined distance relative to the axis of said slot, and at the other end of said device a shell portion for covering said slot, said shell portion having a flat upright surface against which said slot opens, said two portions being integral with each other and having a total length less than the exposed height of a tooth, said shell portion having a housing of sufficient size to receive the element or elements of the bracket provided with slot, and the hooks for the fastening of the orthodontic wire, said shell having an aperture for the passage of the neck joining said bracket to the tooth or to the band, said aperture being of such size as to accurately accommodate said neck with slight force fitting about said neck and with the surfaces of the shell and neck that are next to the tooth substantially flush with each other.
References Cited (Backward Citations)
US4014096A
Cited
US4134208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-17 | 1988-12-17 | 1989-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-17 | 1992-12-17 | 1993-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-17 | 1996-12-17 | 1997-06-18 | $7700.00 | Window Closed / Lapsed |