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牙中牙是人们所熟知的—种畸形牙,1859年首先由Tomes报导,它好发于前牙,而我们遇到了发生在上颔第一恒磨牙的特殊症例,现介绍于下. 患者,男,11岁,因左上颌第一恒磨牙肿痛两天而就诊.口腔检查显示:6龋齿已成残冠状,腐质多,松动(++)、叩痛(++),探已穿髓,但不敏感。6颊侧牙龈及移行区粘膜红肿,压痛明显,无波动。左侧面颊部明显肿胀,外皮不红压痛明显.
Dental teeth is a well-known deformity tooth, first reported by Tomes in 1859. It occurs predominantly on the anterior teeth, and we encounter the special case of the first permanent molars in Shangli. Male, 11 years old, visited the clinic due to the first left molars, permanent molars and toothache for two days. Oral examination revealed that 6 dental caries had become coronal, with many rots (++), percussion pain (++) Pith, but not sensitive. 6 buccal gingival and transitional mucosal swelling, tenderness, no fluctuations. The left cheek clearly swollen, the skin is not red tenderness significantly.