患者:王×,女,17岁。因(?)反复发炎就诊。检查:(?)死髓牙,唇侧牙龈有一瘘管,有脓性分泌物流出。舌侧有一畸形舌侧沟,沿此沟探针可达根尖,牙周袋9mm,牙齿不松动。治疗经过:首先做根管治疗。观察2周,瘘管未愈合。于是在局麻下,于(?)腭侧远中纵形切开牙龈及骨膜,翻开龈瓣,见腭侧骨板部分破坏。牙根暴露, Patient: Wang ×, female, 17 years old. Repeatedly inflamed (?) Treatment. Check: (?) Dead marrow teeth, labial gingival fistula, purulent discharge of secretions. Lingual tongue has a deformity lingual ditch, along the ditch probe up to the root tip, periodontal pocket 9mm, teeth are not loose. After treatment: First do root canal treatment. Observation 2 weeks, fistula did not heal. So under local anesthesia, in the (?) Palatal distal incision gums and periosteum, open the gingival flap, see part of the destruction of palatal bone plate. Root exposure,