患者于1980年始戴用上局义齿,至1992年曾三次折断,说明病人义齿使用情况尚可。1992年初就诊拔除(?),(?)全冠修复后又作上局,戴牙后复查约9次,且多为左侧咬合痛。如果能除外工作模型的损坏,可能为义齿边缘伸展过份或硬区缓冲不够,亦可能为正中(牙合)或非正中(牙合)的早接触所致。戴牙后长时间的左侧咬合痛,迫 Patients began to wear the upper denture in 1980 and were broken three times in 1992, indicating that the use of the patient's denture is acceptable. At the beginning of 1992, the patients were clinically removed (?), (?) Crowns were repaired again, and the teeth were examined for about 9 times. Most of them were biting pain on the left side. If you can exclude the damage to the working model, the denture may be stretched too much edge or hard buffer is not enough, it may be in the middle (occlusal) or non-occlusal (occlusion) early contact due. For a long time after wearing teeth on the left bite pain, forced