下颌骨成釉细胞瘤及牙源性角化囊性瘤CBCT影像的对比研究  

Comparative study on the CBCT image of the mandibular ameloblastoma and keratocystic odontogenic tumor

作　　者：宋海洋 马虞楠 罗亚东 李萌[1] 杜洪明 丁旭[1] 武和明[1] SONG Haiyang;MA Yu＇nan;LUO Yadong;LI Meng;DU Hongming;DING Xu;WU Heming.(Institute of Stomatology , Oral and Maxillofacial Surgery, Nanjing Medical University, Nanjing 210029, China)

机构地区：[1]南京医科大学口腔医学研究所南京医科大学附属口腔医院口腔颌面外科,江苏南京210029

出　　处：《口腔医学》2018年第4期320-323,共4页Stomatology

基　　金：国家自然科学青年基金项目(81600908)

摘　　要：目的回顾发生于下颌骨成釉细胞瘤和牙源性角化囊性瘤的锥体束CT(CBCT)影像资料,寻找两者影像特点与鉴别诊断要点。方法收集下颌骨原发性成釉细胞瘤和牙源性角化囊性瘤CBCT影像资料,分为成釉细胞瘤(AME)组和牙源性角化囊性瘤(KCOT)组,对比观察两组CBCT影像特征。结果 AME组与KCOT组纳入患者各20例,两组患者的年龄、性别及病灶部位、内部分隔均无显著统计学差异(P>0.05);AME组病灶侧骨皮质膨隆程度(1.82±0.55)远高于KCOT组(1.16±0.24);AME组病灶侧颊和/或舌侧骨壁不连续17例,累及牙齿牙根吸收16例;KCOT组病灶骨壁不连续共9例,累及牙齿牙根吸收3例,统计显示骨皮质膨隆、骨壁连续性以及累及牙根吸收情况两组具有显著差异(P<0.05)。结论 CBCT下病灶骨皮质膨隆程度、骨壁连续性以及累及牙根吸收的影像表现是鉴别下颌骨成釉细胞瘤与牙源性角化囊性瘤的重要指标。Objective To find the imaging features and essentials of identification and diagnosis through a comparative study on the CBCT image of the Amelobalstoma and Keratocystic odontogenic tumors occurring at the mandible. Methods CBCT images of primary ameloblastoma and Keratocystic odontogenic tumor of the mandible were collected. They were divided into ameloblastoma group（ AME）and keratocystic odontogenic tumor group（ KCOT） based on the results of pathological diagnosis and the image features of patients in both groups were analyzed. Results Twenty cases of patients were included into AME group and KCOT group equally,the difference in age,gender,position of lesion and interior separation between the two groups of patients were not statistically significant（ P0.05）.The degree of distention of bone cortex at the side of lesion of AME group was（ 1.82±0.55） in average,while the counterpart of KCOT group was（ 1.16±0.24）. In AME group,there were a total of 17 cases of discontinuous bone wall at the buccal side and/or lingual side and 16 cases of tooth root were absorbed. In KCOT group,there were a total of 10 cases of discontinuous bone wall at the buccal side and/or lingual side and 3 cases of tooth root were absorbed. The statistical results showed that there were significant differences between the two groups in distention of bone cortex at lesion side,the continuity of bone wall and the absorption of root（ P〈0.05）. Conclusion Amid the CBCT image,the degree of distention of bone cortex at lesion side,continuity of bone wall and manifestation of dental and dental root resorption are the crucial indexes to identify mandibular ameloblastoma and keratocystic odontogenic tumors.

关 键 词：成釉细胞瘤 牙源性角化囊性瘤 锥体束CT 

分 类 号：R782.5[医药卫生—口腔医学]