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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0973973 (1992-11-09) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 346 인용 특허 : 0 |
A system and method by which an orthodontic appliance is automatically designed and manufactured from digital lower jaw and tooth shape data of a patient provides for preferably scanning a model of the patient\s mouth to produce two or three dimensional images and digitizing contours and selected po
A system and method by which an orthodontic appliance is automatically designed and manufactured from digital lower jaw and tooth shape data of a patient provides for preferably scanning a model of the patient\s mouth to produce two or three dimensional images and digitizing contours and selected points. A computer is programmed to construct archforms and calculate finish positions of the teeth, then to design an appliance, preferably including archwires and brackets, to move the teeth to the calculated positions. The lower teeth are positioned at their roots on an arch defined by the lower jaw bone, and the arch is modified to best fit the tooth tips on a smooth curve. Then upper archforms are constructed for the upper teeth. Crown long axes of the teeth are derived and preserved in the treatment which places all lower teeth but the cuspids in a plane and fits the occluding teeth to them. Overlaps for the upper incisors and for cuspid rise are calculated.
A method of fabricating a custom orthodontic appliance to position teeth of a patient to preferred finish positions in the mouth of the patient, the method comprising the steps of: sensing anatomical shapes from the mouth of the patient; digitizing the sensed anatomical shapes from the mouth of the
A method of fabricating a custom orthodontic appliance to position teeth of a patient to preferred finish positions in the mouth of the patient, the method comprising the steps of: sensing anatomical shapes from the mouth of the patient; digitizing the sensed anatomical shapes from the mouth of the patient, and producing thereby signals containing digitized anatomical shape data including three dimensional tooth shape data representing the shapes of individual teeth of the patient; deriving an ideal dental archform by processing the digitized anatomical shape data contained in the signals with a digital computer programmed to produce a digitized mathematical archform model that is at least in part dependent on the ditized anatomical shape data; deriving, with the computer, tooth finish positions from the digitized anatomical shape data and the digitized mathematical archform model to mesio-distally space the teeth along the derived ideal dental archform and to position and orient the teeth relative to the derived ideal dental archform to positions and orientations based at least in part upon the three dimensional tooth shape data for the individual teeth; establishing an appliance connection point on each of a plurality of the teeth; designing a custom orthodontic appliance, with the computer from the digitized three dimensional tooth shape data, the established appliance connection points and the derived tooth finish positions, such that the custom orthodontic appliance has an appliance configuration dimensioned to interconnect the teeth at their respective connection points with the teeth in the derived tooth finish positions; producing machine readable control signals containing geometric information correlated to the results of the appliance designing step; and automatically fabricating a custom orthodontic appliance with a machine responsive to the machine readable control signals to shape the appliance according to the geometric information contained in the control signals so as to form the custom orthodontic appliance having the designed appliance configuration.
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