化牙骨质纤维瘤是临床上少见的牙源性间叶组织的良性肿瘤。多发于中年人,常位于下颌前磨牙或磨牙区。此病目前国内文献报导较少。对于发生在儿童。上颌前牙区的病例更为少见。我科收治一例,摘要报导如下: 患儿,石某某。男,8岁,学生。病史:患儿3岁时,因ⅠⅡ根尖脓肿,在某院将ⅠⅡ拔除,后症状消失。5岁时发现在原拔牙处相应的上颌有一肿物,呈缓慢性,无痛性向唇侧膨隆,继而影响面容来本院门诊就诊,门诊以上颌纤维瘤收住院。体检:全身发育正常,营养状况良好,局部检查,面部不对称,左上唇及左鼻底部隆起,高出皮肤约0.5公分,局部肤色正常。口内检查:见肿物处 Osteoblastic fibroma is a clinically rare benign tumor of odontogenic mesenchyme. Occur in middle-aged people, often located in the mandibular premolars or molar area. At present, there are few reports on this disease in China. For children to happen. Cases of the maxillary anterior area are more rare. Our department admitted a case, summary report as follows: Children, Shi Moumou. Male, 8 years old, student. History: children 3 years old, due to Ⅰ Ⅱ apical abscess, Ⅰ Ⅱ in a hospital removal, the symptoms disappear. 5 years old found in the original tooth extraction at the corresponding maxillary tumor, a slow, painless swelling to the labial side, which in turn affect the appearance of our hospital clinic, outpatient admitted to the hospital with maxillary fibroids. Physical examination: normal body development, good nutritional status, local examination, facial asymmetry, the left upper lip and left nasal uplift, about 0.5 cm above the skin, the local normal skin color. Mouth examination: see the tumor office