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当前学科：口腔执业助理医师
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患者男，30岁。因工伤致上颌前部创伤。现唇部肿胀，上、下前牙无法咬合，上前牙多个牙松动、冠折。临床考虑上颌前部牙槽突骨折的特征性表现是（）
A
上唇肿
B
牙龈撕裂
C
创伤区咬合错乱
D
相邻牙严重损伤
E
邻牙与松动牙一并移动
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