초록 ▼

The surface characteristics of an organ that needs restoration, for example, a tooth which has been prepared for an inlay insertion, are read by means of a noncontact scan-head. The three-dimensional shape parameters of the implant required to restore the tooth in function and appearance are compute

The surface characteristics of an organ that needs restoration, for example, a tooth which has been prepared for an inlay insertion, are read by means of a noncontact scan-head. The three-dimensional shape parameters of the implant required to restore the tooth in function and appearance are computed on the basis of the recorded contour data. These parameters are then used in a program sequence which controls a milling, cutting or erosive process in order to manufacture the restorative inlay while the patient waits.

대표청구항 ▼

A method for facilitating the fabrication of a workpiece to be placed onto a light reflective object having a three dimensional contour thereon to which said workpiece is to be conformed, comprising the steps of: noncontact topographic scanning of said contour on said object, including the step of d

A method for facilitating the fabrication of a workpiece to be placed onto a light reflective object having a three dimensional contour thereon to which said workpiece is to be conformed, comprising the steps of: noncontact topographic scanning of said contour on said object, including the step of directing a predetermined intensity pattern of light onto said contour so that a corresponding intensity pattern of light will be reflected therefrom, the varying intensity pattern of said reflected light being a measure of said three dimensional contour on said object; directing said pattern of said reflected light from said object onto a light sensing means; converting said pattern of light on said light sensing means into a corresponding pattern of electrical data; selecting a set of said electrical data; storing said set of said electrical data; mounting said workpiece onto a machining means which is responsive to electrical data sequentially presented thereto; sequentially presenting said stored set of electrical data to said machining means; and machining said workpiece into a three dimensional shape in accordance with said stored set of data.