Method of making an orthodontic bracket
AssigneeManufacturers Hanover Trust Company
InventorsJames F. Reher, Farrokh Farzin-Nia
Life of this patent
Estimating the term…
Abstract
An orthodontic bracket and method of making same wherein the bracket has at least one tie wing integrally formed with a base portion. In one form of the invention the bracket is provided with at least one longitudinally extending groove which extends into the base portion, the groove having at least a portion extending beyond at least a portion of the groove opening. Another aspect of the present invention is directed to a method of making an orthodontic bracket using only ultrasonic machining techniques.
Claims10
A method of making an orthodontic bracket having a base portion having a tooth contact surface for attachment to a tooth and at least one tie wing extending from said base portion and integrally formed therewith, said at least one tie wing having an archwire slot for receiving an orthodontic archwire, comprising the steps of:
- providing a disc of the desired material having a thickness substantially equal to the length of said orthodontic bracket;
- and
- machining substantially the entire cross-sectional profile of said orthodontic bracket in one step using only ultrasonic machining.
A method of making an orthodontic bracket having a base portion having a tooth contact surface for attachment to a tooth and at least one tie wing extending from said base portion and integrally formed therewith, said at least one tie wing having an archwire slot for receiving an orthodontic archwire, comprising the steps of:
- providing a disc of the desired material having a thickness substantially equal to the length of said orthodontic bracket;
- machining substantially the entire cross-sectional profile of said orthodontic bracket in one step using only ultrasonic machining;
- machining substantially the entire top configuration of said orthodontic bracket in one step using only ultrasonic machining;
- and
- machining substantially the entire base of said bracket in one step using only ultrasonic machining.
A method of making an orthodontic bracket having a base portion for attachment to a tooth and at least one tie wing integrally formed with and extending from said base portion, said tie wing having a slot for receiving an orthodontic archwire, comprising the steps of:
- providing a disc of a desired material having a thickness substantially equal to the length of an orthodontic bracket;
- providing a first profile cut for a plurality of orthodontic brackets at the same time from said disc using only ultrasonic machining;
- and
- taking said plurality of brackets and forming the top configuration of said orthodontic bracket using only ultrasonic machining.
A method of making an orthodontic bracket made of sapphire having a base portion or attachment having a tooth contact surface for attachment o a tooth and at least one tie wing extending from said base portion and integrally formed therewith having a slot for receiving an orthodontic archwire, comprising the steps of:
- providing a disc of the desired material having a thickness substantially equal to the length of said orthodontic bracket;
- and
- machining substantially the entire cross-sectional profile of said orthodontic bracket in one step using only ultrasonic machining.
Dependencies are inferred from the claim text.