METHOD FOR DESIGNING DENTAL CROWN, PROGRAM FOR DESIGNING DENTAL CROWN, DEVICE FOR DESIGNING DENTAL CROWN, METHOD FOR MANUFACTURING DENTAL CROWN, AND DEVICE FOR MANUFACTURING DENTAL CROWN

摘要

PROBLEM TO BE SOLVED: To provide an art facilitating design or manufacture of a dental crown disposed to a defective part of a tooth.SOLUTION: A method for designing a dental crown comprises: changing the posture of one dentition of an upper jaw dentition and a lower jaw dentition in a three-dimensional image (S4); moving the one dentition in a Z-axis direction until coming in contact with the other dentition (S4); storing data on the posture of the one dentition at a position where both of the dentitions come in contact with each other, in a storage means; repeatedly carrying out a posture changing step, a moving step and a storage step while changing the posture of the one dentition into a posture different from the previous one in the posture changing step; obtaining three-dimensional coordinate data at a position in the most vicinity of the other dentition of positions in a Z-axis direction that the three-dimensional data on a plurality of the postures of the one dentition stored in the storage part, in the plurality of positions in an X-Y flat surface after the repeated steps; generating data on an envelope curved surface based on the plurality of three-dimensional data obtained (S4); and deforming the three-dimensional image of a dental crown based on the generated data on the envelope curved surface.