摘要
目的分析多层螺旋CT曲面重建对阻生牙定位及正畸治疗的指导价值。方法回顾性分析本院2018年2月至2019年7月收治的30例阻生牙患者的临床资料,观察MSCT扫描的影像特点及阻生牙的形态、位置、朝向以及与相邻牙、牙列的位置关系。观察MSCT曲面重建与X线平片对阻生牙定位情况。结果 30例患者中,共发现36颗阻生牙且全部在MSCT曲面重建图像上显示。其中单个埋伏阻生牙为17例;2个或多个有13例;上颌尖牙11颗,中切牙4颗,侧切牙4颗,第一前磨牙3颗;下颌尖牙5颗,侧切牙2颗,第一前磨牙4颗,第二前磨牙3颗。41颗阻生牙长度约为2.47~25.47mm,平均每颗约为9.75mm。其中腭侧13颗,唇侧8颗,舌侧6颗,冠唇根腭侧7颗,冠腭根唇侧4颗。对阻生牙诊断准确率为100%,显著高于X线平片。结论阻生牙术前对患者进行MSCT,通过MSCT曲面重建技术可以更准确地判断阻生牙所在的位置,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,对阻生牙的诊治起到了重要的指导作用。
Objective To analyze the guiding value of multi-slice spiral CT curved planar reconstruction for the positioning of impacted teeth and orthodontic treatment.Methods The clinical data of 30 patients with impacted teeth from February 2018 to July 2019 in our hospital were retrospectively analyzed.The imaging features of MSCT scan and the shape,location,orientation of the impacted teeth and position relationship with adjacent teeth and dentition were observed.The positioning of impacted teeth by multi-slice spiral CT curved planar reconstruction and the X-ray plain film was observed.Results 36 impacted teeth were found in total in 30 patients of this group and all were displayed on the image of MSCT curved planar reconstruction.There were 17 cases with single impacted teeth;13 cases with 2 or more.There were 11 maxillary canines,4 central incisor,4 lateral incisors,3 first premolars.There were 5 mandibular canines,2 lateral incisors,4 first premolars,and 3 second premolars.The length of 41 impacted teeth is about 2.47-25.47mm,and the average is about 9.75mm.Among them,There were 13 impacted teeth on the palatal side,8 impacted teeth on the labial side,6 impacted teeth on the lingual side,7 impacted teeth on the palatal side of the coronal and labial root,and 4 impacted teeth on the labial side of coronal and palatal root.The diagnostic accuracy for the impacted teeth was 100%,which was significantly higher than that of the X-ray film.Conclusion MSCT can be performed on patients with impacted teeth before operation.MSCT curved planar reconstruction can more accurately determine the position of the impacted teeth,provide reliable information for clinical treatment,improve the accuracy of surgery,reduce the pain of patients,and plays an important guiding role in the diagnosis and treatment of impacted teeth.
作者
罗晶
张乐琪
谭蕾
陶洪
LUO Jing;ZHANG Le-qi;TAN Lei;TAO Hong(Department of Stomatology,the First Affiliated Hospital of Xi’an JIaotong University,Xi'an 710000,Shaanxi Province,China)
出处
《中国CT和MRI杂志》
2021年第7期37-39,共3页
Chinese Journal of CT and MRI
基金
陕西省自然科学基础研究计划(2016JM8052)。
关键词
多层螺旋CT
曲面重建
阻生牙
正畸治疗
Multi-slice Spiral CT
Curved Planar Reconstruction
Impacted Teeth
Orthodontic Treatment
