患者,女,16岁。因左下门牙■长期萌出不全而就诊。检查:■稍唇侧牙龈有4个“牙尖”破龈,中间有龈组织,呈花瓣状,未见正常■切缘。摄■牙 X 线片:■存在,近中切角侧向■根颈部,远中切角受阻于多个额外牙丛集影下。诊断:多个额外牙致■阻生。处理:2%利多卡因局部阻滞麻醉下,拔除4个额外牙,牙槽窝内未刮及其它牙样组织,2周后复诊:■远中切角破龈。摄 X 线牙片:■存在,远中切角处丛集 Patient, female, 16 years old. Due to the lower left incisor long eruption incomplete treatment. Check: ■ slightly gingival margin of the four “cusp” broken gingiva, gingival tissue in the middle, was petal-like, no normal ■ cut edge. ■ Tooth X-ray film: ■ existence, near mid-cut angle lateral ■ root neck, distal incision blocked by multiple extra teeth cluster shadow. Diagnosis: Multiple extra teeth caused ■ Impaction. Treatment: 2% lidocaine local block anesthesia, removal of four additional teeth, alveolar nest did not scratch and other tooth-like tissue, 2 weeks after the referral: ■ far-angle cut gingiva. Photo X-ray teeth: ■ Existence, far corner cut at the cluster