METHOD FOR MATCHING ORGANIC LOWER JAW OPENING/CLOSING AXIS WITH VIRTUAL ARTICULATOR OPENING/CLOSING AXIS USING TWO-DIMENSIONAL IMAGE

摘要

PROBLEM TO BE SOLVED: To provide a method for simply matching an organic lower jaw opening/closing axis with a virtual articulator opening/closing axis using a two-dimensional image imaged by a digital camera, etc.;SOLUTION: Two-dimensional images G1-G6 are imaged which are an occlusal state obtained by changing an angle, multiple occlusal states obtained by imaging a patient's skull of a mouth-opening state and the mouth-opening state. These two-dimensional images are displayed on a monitor 3, and an operator is urged to identify positions of multiple feature points commonly appearing on multiple two-dimensional images on a screen, and also the operator is urged to identify patient's occlusal contact points t1-t3 as feature points on the patient's upper dentition. The three-dimensional coordinates are calculated for the three-dimensional coordinates of a forward reference point and a rearward reference point, and the three-dimensional coordinates of the feature points in the patient's upper dentition, based on the identified feature points. The positions of the feature points on the upper dentition on data with the three-dimensional data of the patient's upper dentition are acquired separately, and the three-dimensional data of the upper dentition is synthesized using the acquired positions of the feature points in the upper dentition and the three-dimensional coordinates of the occlusal contact points obtained by calculating the three-dimensional coordinates.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2018,JPO&INPIT