应用锥形束CT扫描在多生牙诊断中的价值分析  

Value of Cone Beam CT Scanning in the Diagnosis of Supernumerary Teeth

作　　者：罗晶 张乐琪 谭蕾 陶洪[1] LUO Jing;ZHANG Le-qi;TAN Lei(Department of Stomatology,The First Affiliated Hospital of Xi'an Jiaotong University,Xi'an 710000,Shaanxi Province,China)

机构地区：[1]西安交通大学第一附属医院口腔科,陕西西安710000

出　　处：《中国CT和MRI杂志》2020年第9期60-62,共3页Chinese Journal of CT and MRI

基　　金：陕西省自然科学基金资助项目(No.2018JQ6021)。

摘　　要：目的分析应用锥形束CT扫描在多生牙诊断中的价值。方法回顾分析西安交通大学第一附属医院2018年1月至2019年3月收治的80例多生牙患者的临床资料。观察锥形束CT扫描的影像特点及多生牙的形态、位置、朝向以及与相邻牙、牙列的位置关系。分析多生牙个体分布及位置分布的特点结果 80例患者中,共发现104颗多生牙且全部在锥形束CT上显示。其中有1~2颗多生牙的为71例;3颗多生牙的有9例;暂未见4颗及以上的患者。多生牙体积要比正常的恒牙体积小,104枚多生牙长度约为4.79~27.92mm,平均约为11.87mm。牙体最大径6.95mm,其中39枚多生牙牙根与牙体长轴成角度;18枚多生牙的牙根不完整。位于上颌的有95颗,占91.35%;位于下颌的有9颗,占8.65%;位于腭(舌)侧的有82颗,占78.85%;位于唇侧的有6颗,占5.77%;位于唇、腭侧之间的有28颗,占26.92%。结论多生牙术前对患者进行锥形束CT检查,可以更准确地判断多生牙所在的位置,为临床治疗提供可靠的信息,提高手术的准确性,减轻患者的痛苦,对多生牙的诊治起到了重要的指导作用,值得临床上广泛推广。Objective To analyze the value of cone beam CT scanning in the diagnosis of supernumerary teeth.Methods The clinical data of 80 patients with supernumerary teeth who were admitted to our hospital from January 2018 to March 2019 were retrospectively analyzed.Observe the image features of the cone beam CT scan and the shape,position,orientation of the supernumerary teeth and the positional relationship with adjacent teeth and dentition.Analyze the characteristics of individual distribution and location distribution of supernumerary teeth.Results In the 80 patients,more than 104 supernumerary teeth were found and all were shown on cone beam CT.Among them,there were 71 cases with 1~2 supernumerary teeth,9 cases with 3 supernumerary teeth.and patients with 4 or more supernumerary teeth were not seen.The volume of supernumerary teeth was smaller than that of normal permanent teeth.The length of 104 supernumerary teeth was about 4.79~27.92 mm,with an average of about 11.87 mm.The maximum diameter of the tooth was 6.95 mm,of which the roots of 39 supernumerary teeth formed an angle with the long axis of the tooth and the roots of 18 supernumerary teeth were incomplete.There were 95 supernumerary teeth in the upper jaw,accounting for 91.35%,9 supernumerary teeth in the lower jaw,accounting for 8.65%,82 supernumerary teeth in the palatal (lingual) side,accounting for 78.85%,6 supernumerary teeth in the labial side,accounting for 5.77%,and 28 supernumerary teeth between the lips and the palatal side,accounting for 26.92%.Conclusion Cone beam CT examination of patients before surgery of supernumerary teeth can more accurately determine the location of supernumerary teeth,provide reliable information for clinical treatment,improve the accuracy of surgery,reduce the pain of patients,and play an important guiding role in the diagnosis and treatment of supernumerary teeth,and it is worthy of widespread promotion in clinic.

关 键 词：锥形束CT 多生牙 三维重建技术 诊断价值 

分 类 号：R783[医药卫生—口腔医学] R445.3[医药卫生—临床医学]