患者女,34岁,住院号341155,因左上颌前牙区肿块并疼痛六个月而于1989年9月18日入院。体格检查:一般状况尚好,系统检查无异常发现。(?)唇腭侧牙龈肿块,边界清楚,表面粘膜发红,质硬,按压有脓液自龈沟溢出,轻度压痛。(?)松动Ⅰ°。双颌下及颈部淋巴结未触及肿大.X线检查:上颌门齿间牙槽嵴骨质吸收。实验 A 34-year-old female patient, hospital number 341155, was admitted to hospital on September 18, 1989 due to a lump in the anterior maxillary area and pain for six months. Physical examination: The general condition is still good, and no abnormal findings are found in the system examination. (?) Lum gingival lumps, clear borders, redness of the surface mucous membranes, hard texture, pressing pus overflow from the sulcus, mild tenderness. (?) Loosens I°. Submandibular and cervical lymph nodes are not palpated. X-ray examination: maxillary incisor alveolar bone resorption. experiment