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。
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。
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.
目的：观察后路af钉内固定装置间接减压对胸腰椎爆裂骨折伴不全截瘫的疗效。
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