外伤后自觉伸长松动、疼痛，检查无明显移位，应诊断为（　　）A.牙挫伤B.牙脱位C.冠折D.根折E.冠根折

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问题

外伤后自觉伸长松动、疼痛，检查无明显移位，应诊断为（　　） A.牙挫伤 B.牙脱位 C.冠折 D.根折 E.冠根折

选项

答案 A

解析

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