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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0973844 (1992-11-09) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 323 인용 특허 : 0 |
Orthodontic appliance placement jigs are provided positioning and orienting the appliance at connection points on the teeth of a patient, particularly for positioning brackets against the surfaces of the teeth so that they can be bonded thereto. The jigs are each provided with a surface conforming t
Orthodontic appliance placement jigs are provided positioning and orienting the appliance at connection points on the teeth of a patient, particularly for positioning brackets against the surfaces of the teeth so that they can be bonded thereto. The jigs are each provided with a surface conforming to the contour of the tooth to which they are to be mounted. Another surface of the jig engages the bracket to hold it in the proper position and orientation for mounting to the tooth and spaced in relation to the contour surface to precisely locate the jig on the tooth. The jigs are particularly useful in positioning brackets of custom appliances designed to the individual anatomy of the patient, and requiring custom positioning of the brackets on the teeth. The jigs are formed with numerical controlled machinery that develops jig forming instructions from digitized tooth shape data and from digital representations of the tooth finish positions and appliance design. The jig forming instructions are preferably derived from the same data and digital information from which the tooth finish positions and custom appliance geometry are calculated.
A method of forming jigs to place a custom orthodontic appliance for connection to teeth of a patient, the method comprising the steps of: forming a custom orthodontic appliance by: digitizing tooth shape data of external surfaces of crowns of teeth of a patient, defining appliance connection points
A method of forming jigs to place a custom orthodontic appliance for connection to teeth of a patient, the method comprising the steps of: forming a custom orthodontic appliance by: digitizing tooth shape data of external surfaces of crowns of teeth of a patient, defining appliance connection points on surfaces of the teeth in relation the digitized tooth shape data, establishing appliance geometry based on the tooth shape data to move the teeth to desired finish positions when connected to the teeth at the connection points, and fabricating a custom appliance in accordance with the established appliance geometry; and forming jigs for locating the appliance at the connection points by: calculating, from the digitized tooth shape data and defined connection points, jig geometry defining a jig locating surface that conforms to a unique portion of the external surface of the crown of a tooth, and defining an appliance engaging surface having the same location relative to the jig locating surface as the unique portion of the external surface has to the connection point on the tooth, generating a machine control signal carrying machine control instructions for producing a jig in accordance with the calculated jig geometry, and operating the machine in response to the control signal to form a jig that, when fit on the tooth, will position and orient an appliance engaged thereby at the connection point of the tooth for connection thereto.
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