Patent ID: 8423166

Claim:
A method for grinding a denture in denture production, comprising: (1) a jaw-relation reproduction step of determining a jaw-relation reproduction condition by measuring a jaw movement of a patient, and reproducing a jaw state of the patient on an occlusion-state reproducing apparatus in accordance with the jaw-relation reproduction condition; (2) a pre-grinding denture production step of arranging dentures on the occlusion-state reproducing apparatus in accordance with the jaw-relation reproduction condition and preparing pre-grinding dentures; (3) a measurement step for denture data with reference points of measuring denture data with reference points which is three-dimensional image data containing reference points that represents a positional relationship between the jaw-relation reproduction condition and the dentures and an occlusal surface of the dentures; (4) an occlusion-state reproduction step of reproducing an occlusion state of the denture data with reference points by using the jaw-relation reproduction condition on a three-dimensional image; (5) a grinding data determination step of determining grinding data of grinding portions under a dynamic condition or set condition from a portion surrounded by an image of upper and lower jaws on the three dimensional image in a reproduced occlusal state; (6) a preparation step for denture data with reference points having grinding data for preparing denture data with reference points having grinding data, where the denture data with reference points is additionally provided with the grinding data; and (7) a grinding step for pre-grinding dentures, which grinds the pre-grinding denture based on the denture data with reference points having grinding data.