Methods Hemisections were performed on reserved canals of incomplete tooth fracture, complete root fracture and furcation involvement after root canal therapy.
方法选择隐裂、根折或根分叉病变患者，对欲保留牙根进行根管治疗后，行半牙切除术。
2
The reason for hydrogen embrittlement fracture is incomplete removal of hydrogen after acid-washing or electroplating.
是在酸洗电镀后除氢不及时或不彻底导致氢脆断裂。
3
Objective: To observe the effects of posterior AF instrument internal fixation with indirect decompression on the treatment of thoracolumbar vertebrae burst fracture with incomplete paraplegia.