Patent US4243386A successfully refreshed from Google Patents.
US4243386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthodontic appliance
Assignee: GAC International Inc
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Filing: 1978-03-16
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Granted: 1981-01-06
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Expires: 1998-03-16
Abstract
Abstract An orthodontic appliance is disclosed which is suitable for supporting a wire during treatment. The appliance is adapted to be directly adhered to the surface of the patient's tooth and includes on the base thereof a plurality of indentations which have the surfaces thereof roughened so as to provide a mechanical lock with the adhesive and facilitate direct adherence of the appliance to the tooth's surface with a superior bonding action.
Inventors
- 👤 Kozo Kawaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:53
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C7/14; A61C7/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
136 words
An orthodontic appliance adapted to be adhered directly to the surface of a tooth which comprises an orthodontic bracket suitable for supporting a wire, and a base member connected to the lower portion of said orthodontic bracket and forming a flange extending from said lower portion of said bracket, said base member having in the rear surface thereof a plurality of indentations which extend into the thickness of said base member but do not protrude onto the other surface thereof, said indentations including a sufficiently roughened surface to facilitate a locking relation with an adhesive so as to enable said appliance to be directly adhered to the surface of said tooth, said roughened surface having a finish of approximately 6 to 10 microns in depth with a spacing between irregularities of approximately 5 to 13 microns.
Claim 2
Dependent Claim
136 words
An orthodontic appliance adapted to be adhered directly to the surface of a tooth which comprises an orthodontic bracket suitable for supporting a wire, and a base member connected to the lower portion of said orthodontic bracket and forming a flange extending from said lower portion of said bracket, said base member having in the rear surface thereof a plurality of indentations which extend into the thickness of said base member but do not protrude onto the other surface thereof, said indentations including a sufficiently roughened surface to facilitate a locking relation with an adhesive so as to enable said appliance to be directly adhered to the surface of said tooth, said roughened surface having a finish of approximately 6 to 10 microns in depth with a spacing between irregularities of approximately 5 to 13 microns.
Claim 3
Dependent Claim
29 words
An orthodontic appliance as defined in claim 1 wherein said indentations are in the form of photo etched spaced holes disposed over the rear surface of said base member.
Claim 4
Dependent Claim
23 words
An orthodontic appliance as defined in claim 2 wherein said holes cover approximately seventy-five percent of said rear surface of said base member.
Claim 5
Dependent Claim
58 words
An orthodontic appliance as defined in claim 1 wherein said indentations extend into said base member approximately two-thirds of the thickness of said base member and have on at least the walls thereof a roughened surface to facilitate a locking relation with an adhesive thus enabling said appliance to be directly adhered to the surface of said tooth.
Claim 6
Dependent Claim
44 words
An orthodontic appliance as defined in claim 1 wherein said base member is approximately 0.012 inch thick stainless steel and said indentations are in the form of spaced 0.012 inch diameter holes extending into said base member for a depth of approximately 0.008 inches.
Claim 7
Dependent Claim
127 words
An orthodontic bracket adapted to be adhered directly to the surface of a tooth which comprises an upper portion suitable for supporting a wire and a lower portion which terminates in a base portion which is generally conformed to the surface of the tooth to which it is to be applied, said conformed surface of said base having a plurality of indentations which extend into the base portion of said bracket, said indentations including a sufficiently roughened surface to facilitate a locking relation with an adhesive so as to enable said bracket to be directly adhered to the surface of said tooth, said roughened surface having a finish of approximately 6 to 10 microns in depth with a spacing between irregularities of approximately 5 to 13 microns.
Claim 8
Dependent Claim
127 words
An orthodontic bracket adapted to be adhered directly to the surface of a tooth which comprises an upper portion suitable for supporting a wire and a lower portion which terminates in a base portion which is generally conformed to the surface of the tooth to which it is to be applied, said conformed surface of said base having a plurality of indentations which extend into the base portion of said bracket, said indentations including a sufficiently roughened surface to facilitate a locking relation with an adhesive so as to enable said bracket to be directly adhered to the surface of said tooth, said roughened surface having a finish of approximately 6 to 10 microns in depth with a spacing between irregularities of approximately 5 to 13 microns.
Claim 9
Dependent Claim
28 words
An orthodontic bracket as defined in claim 6 wherein said indentations are in the form of photo etched spaced holes disposed over the conformed surface of said base.
Claim 10
Dependent Claim
22 words
An orthodontic bracket as defined in claim 7 wherein said holes cover approximately seventy-five percent of said conformed surface of said base.
Claim 11
Dependent Claim
56 words
An orthodontic bracket as defined in claim 6 wherein said indentations extend into said base portion a distance of at least 0.008 inches and have on at least the walls thereof a roughened surface to facilitate a locking relation with an adhesive thus enabling said bracket to be directly adhered to the surface of said tooth.
Claim 12
Dependent Claim
45 words
An orthodontic bracket as defined in claim 6 wherein said indentations are in the form of spaced 0.012 inch diameter holes extending into said base portion for a depth of approximately 0.008 inches and which are spaced from one another on approximately 0.020 inch centers.
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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |