上颌阻生尖牙患者寰椎形态变异情况的锥形束CT研究  

Morphological anomalies of atlas in patients with maxillary impacted canines: a cone-beam computed tomography study

作　　者：严沁月 曹丹[1] 严斌[1] YAN Qinyue;CAO Dan;YAN Bin(Department of Orthodontics,The Afiliated Stomatological Hospital of Nanjing Medical University,Jiangsu Prorince Key Laboratory of Oral Diseases,Jiangsu Prou ince Engineering Rssearch Center of Stomatological Translational Medi-cine,Nanjing 210029,China)

机构地区：[1]南京医科大学附属口腔医院正畸科江苏省口腔疾病研究重点实验室江苏省口腔转化医学工程研究中心,江苏南京210029

出　　处：《口腔医学》2022年第5期437-441,共5页Stomatology

基　　金：国家自然科学基金(82071143,81571005);江苏高校优势学科建设工程(PAPD,2018-87);江苏省卫生健康委医学科研重点项目(ZDA2020003)。

摘　　要：目的 利用锥形束CT(cone-beam computed tomography, CBCT)研究上颌尖牙唇(腭)侧阻生(BIC/PIC)的患者寰椎形态变异的发生情况,以期辅助上颌阻生尖牙的预测和早期干预。方法 选取196例上颌阻生尖牙患者(研究组)和196例年龄、性别、安氏分类与之相匹配的尖牙正常萌出者(对照组)。将所有样本的CBCT导入Dolphin软件,重建头颅侧位片和三维图像,观察并记录各组寰椎后桥及寰椎后弓发育缺陷(包括寰椎后弓发育不全和寰椎后椎弓裂隙)的发生情况,并使用SPSS软件进行统计分析。结果 研究组寰椎后桥的发生率为32.6%,显著高于对照组(22.4%,P=0.024)。PIC组寰椎后桥发生率显著高于对照组(P=0.005),BIC组和对照组、BIC和PIC组之间无统计学差异(P>0.05)。寰椎后弓发育缺陷研究组和对照组之间的发生率并无统计学差异(P>0.05)。结论 上颌尖牙阻生患者较尖牙正常萌出者更容易发生寰椎后桥。Objective To investigate morphological anomalies of atlas in patients with buccally or palatally maxillary impacted canines(BIC/PIC) using cone-beam computed tomography(CBCT), and to contribute to predicting and early intervening maxillary impacted canines in clinic. Methods A total of 196 CBCT images of patients with maxillary impacted canines were selected as the experimental group, and 196 CBCT images with normally erupted canines matched for gender, age and Angle classification were selected as control group. CBCT images of all samples were imported, and lateral cephalometric and 3 D images were reconstructed in Dolphin to record the prevalence of ponticulus posticus and posterior atlas arch deficiency(including classification of posterior atlas arch and spondylolisthesis of posterior atlas arch). Statistics were analyzed using SPSS. Results The prevalence of ponticulus posticus was 32.6% in the experimental group, significantly higher than 22.4% in the control group(P=0.024). The prevalence of ponticulus posticus in PIC group was significantly higher than that in the control group(P=0.005). There was no significant difference between BIC group and control group, and so was there between BIC and PIC group(P>0.05). The prevalence of posterior atlas arch deficiency showed no statistical difference between experimental group and control group(P>0.05). Conclusion Ponticulus posticus occurrs more often in patients with palatally maxillary impacted canines than people with normally erupted canines.

关 键 词：锥形束CT 上颌阻生尖牙 寰椎后桥 寰椎后弓发育缺陷 

分 类 号：R783.5[医药卫生—口腔医学]