上颌占位先萌额外牙误诊１例报告额外牙又称多生牙，是由于牙胚或牙板发育时分裂过多，形成了多于正常数目的牙蕾所致，临床上较常见，且多见于上颌切牙部位，但额外牙占位先萌出１年，而正常恒牙未萌，且误诊为正常恒牙者少见。为避免误诊，延误治疗最佳时期，造成牙颌畸... First appendage of the maxillary space occupying the first additional case of misdiagnosis of extra teeth, also known as extra teeth, is due to excessive development of tooth germs or dental board development, the formation of more than the normal number of dental buds caused by the more common clinical and More common in the maxillary incisors, but the extra teeth occupy the first eruption of 1 year, while the normal permanent teeth are not adorable, and misdiagnosed as normal permanent teeth are rare. To avoid misdiagnosis, delay the best period of treatment, resulting in dental ...