锥形束CT和根尖片诊断根尖区牙根外吸收的比较研究

发布时间：2018-04-23 04:03

本文选题：牙根吸收 + 锥形束CT　；参考：《重庆医学》2014年19期

【摘要】：目的比较锥形束CT(CBCT)和根尖片诊断根尖区牙根外吸收(根尖吸收)的准确性。方法选取160颗单根前磨牙,用以模拟4种不同程度的根尖吸收:无、轻度、中度、重度。模拟完成后,对所有牙齿拍摄CBCT和根尖片获取两组影像学资料。正畸医师通过对影像学资料的分析独立地评估所有牙齿根尖吸收程度。采用McNemar检验对比分析两种成像技术诊断不同程度根尖吸收的准确率。结果 CBCT诊断无、轻度、中度、重度及总的根尖吸收的准确率分别为95.0%、97.5%、42.5%、87.5%和80.6%,而根尖片的准确率分别为85.0%、42.5%、70.0%、92.5%和72.5%,两种成像技术轻度、中度及总根尖吸收的诊断结果比较差异有统计学意义(P0.05)。结论相比于根尖片,CBCT对根尖吸收具有更高的检出率,但其对中度吸收的敏感性较低。在正畸临床中,CBCT可用于对根尖吸收进行早期诊断,从而为继续或修正当前的正畸治疗提供必要的参考意见。
[Abstract]:Objective to compare the accuracy of cone beam CT (CBCT) and root apex in the diagnosis of root resorption (root apex absorption) in the apical region. Methods 160 single premolars were selected to simulate 4 different degrees of root apex absorption: No, mild, moderate, and severe. After the simulation, two groups of imaging data were obtained for all teeth photographed with CBCT and root apex. Orthodontic physicians McNemar test was used to evaluate the apex absorption of all teeth independently. The accuracy of the two imaging techniques to diagnose the apex absorption of different degrees was compared and analyzed. Results CBCT had no diagnosis, and the accuracy of mild, moderate, severe and total root apex absorption was 95%, 97.5%, 42.5%, 87.5% and 80.6% respectively, and the root tip was the root tip. The accuracy rate was 85%, 42.5%, 70%, 92.5% and 72.5%, two imaging techniques were mild, moderate and total root apex absorption had a significant difference (P0.05). Conclusion compared with root tip, CBCT has a higher detection rate for root apex absorption, but its sensitivity to moderate absorption is lower. In orthodontic clinical, CBCT can be used in the root. Tip absorption for early diagnosis, so as to continue or modify the current orthodontic treatment to provide the necessary reference.

【作者单位】：重庆医科大学附属口腔医院正畸科/口腔疾病与生物医学重庆市重点实验室;
【基金】：国家自然科学基金资助项目(81000463) 重庆市卫生局基金资助项目(2011-2-192)
【分类号】：R783.5

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