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US3955282A Expired / Lapsed US ⏱️ 0.0 years remaining

Process of mounting orthodontic bracket to tooth

Assignee: Individual
•
Filing: 1975-03-03
•
Granted: 1976-05-11
•
Expires: 1995-03-03
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Abstract

Abstract An orthodontic method, dental composition, and apparatus are provided which permit the direct bonding of orthodontic brackets to teeth. In particular, a method has been devised whereby the tooth, following phosphoric acid etching, is treated sequentially with a primer, and a sealant which contains a catalyst, and a pre-mixed dental adhesive which permits the attachment of orthodontic brackets to teeth. More particularly, this invention permits the direct bonding of stainless steel attachments to teeth taking advantage of a low profile in the design of the bracket base method of attaching the bracket to the tooth which is curved to fit the individual tooth. Virtually any type of bracket may be welded onto this base and orthodontic treatment can proceed with greater patient comfort and convenience.

Inventors

  • 👤 Earl G. McNall

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 14:05
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 118 words
Process of mounting an orthodontic bracket to a tooth, comprising the steps of: 1. coating the bracket with a bracket base coating comprising polysulfone or polyether sulfone; 2. etching the tooth surface with a gel comprising phosphoric acid and a thickening agent; 3. applying to both tooth and bracket a sealant comprising a mixture of: a. a polymer or pre-polymer which is compatible with the tooth enamel and which chemically interacts with the adhesive (to follow), and b. benzoyl peroxide or derivatives thereof; 4. coating the bracket with an adhesive comprising a mixture of: a. methyl and/or ethyl methacrylate, and b. monomers of butyl and higher acrylates and/or methacrylates; 5. applying the bracket to the prepared tooth surface.
Claim 2
Dependent Claim 118 words
Process of mounting an orthodontic bracket to a tooth, comprising the steps of: 1. coating the bracket with a bracket base coating comprising polysulfone or polyether sulfone; 2. etching the tooth surface with a gel comprising phosphoric acid and a thickening agent; 3. applying to both tooth and bracket a sealant comprising a mixture of: a. a polymer or pre-polymer which is compatible with the tooth enamel and which chemically interacts with the adhesive (to follow), and b. benzoyl peroxide or derivatives thereof; 4. coating the bracket with an adhesive comprising a mixture of: a. methyl and/or ethyl methacrylate, and b. monomers of butyl and higher acrylates and/or methacrylates; 5. applying the bracket to the prepared tooth surface.
Claim 3
Dependent Claim 36 words
Process in accordance with claim 1, including additionally the step of drying the tooth, after etching, with a safe-dry composition consisting of: a. a low toxicity, volatile, chlorinated hydrocarbon, and b. an alcohol higher than ethyl.
Claim 4
Dependent Claim 46 words
Process in accordance with claim 1, including in addition the step of applying to the tooth, prior to coating with the sealant, a primer consisting of a silane monomer which is capable of bonding to the tooth enamel and is dissolved in a volatile, inert solvent.
Claim 5
Dependent Claim 14 words
Process in accordance with claim 1 wherein said sealant includes: c. an acidic monomer.
Claim 6
Dependent Claim 13 words
Process in accordance with claim 4 wherein said polymer or pre-polymer is resilient.

References Cited (Backward Citations)

US3250003A Cited
US3745653A Cited
US3797115A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-05-11 1979-11-10 1980-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-05-11 1983-11-10 1984-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-05-11 1987-11-10 1988-05-11 $7700.00 Window Closed / Lapsed

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