Patent ID: 8682463

Claim:
A denture grinding machine, comprising: a denture-holding table for holding dentures; a grinding tool for grinding the dentures held on the denture-holding table; a main body for holding the grinding tool; a moving mechanism for causing relative movement between the denture-holding table and the main body; and a driving mechanism for relatively driving the main body and the denture-holding table, wherein the moving mechanism moves relatively the denture-holding table and the main body in three-dimensional coordinate directions based on grinding portion data, wherein the grinding tool performs grinding of the denture occlusal surface from a direction perpendicular to the occlusal surface, wherein the grinding portion data uses data prepared by (1) a jaw-relation reproduction operation of determining a jaw-relation reproduction condition by obtaining a jaw movement information, 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 operation 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 operation of measuring denture data with reference points comprising three-dimensional image data of an occlusal surface of the dentures and reference points that represent a positional relationship between the jaw-relation reproduction condition and the pre-grinding dentures, (4) an occlusion-state reproduction operation 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 operation 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, and (6) a preparation operation of preparing denture data with reference points having grinding data, where the denture data with reference points is additionally provided with the grinding data.