使用全景与锥形束 CT 成像对上颌尖牙埋伏阻生的术前治疗规划。
Pre-surgical treatment planning of maxillary canine impactions using panoramic vs cone beam CT imaging.
机构信息
Department of Oral Health Sciences, KU Leuven & Dentistry, University Hospitals Leuven, Leuven, Belgium;
出版信息
Dentomaxillofac Radiol. 2013;42(9):20130157. doi: 10.1259/dmfr.20130157. Epub 2013 Aug 1.
OBJECTIVES
The aim of this prospective study was to compare the impact of using two-dimensional (2D) panoramic radiographs and three-dimensional (3D) cone beam CT for the surgical treatment planning of impacted maxillary canines.
METHODS
This study consisted of 32 subjects (19 females, 13 males) with a mean age of 25 years, referred for surgical intervention of 39 maxillary impacted canines. Initial 2D panoramic radiography was available, and 3D cone beam CT imaging was obtained upon clinical indication. Both 2D and 3D pre-operative radiographic diagnostic sets were subsequently analysed by six observers. Perioperative evaluations were conducted by the treating surgeon. McNemar tests, hierarchical logistic regression and linear mixed models were used to explore the differences in evaluations between imaging modalities.
RESULTS
Significantly higher confidence levels were observed for 3D image-based treatment plans than for 2D image-based plans (p < 0.001). The evaluations of canine crown position, contact relationship and lateral incisor root resorption were significantly different between the 2D and 3D images. By contrast, pre- and perioperative evaluations were not significantly different between the two image modalities.
CONCLUSIONS
Surgical treatment planning of impacted maxillary canines was not significantly different between panoramic and cone beam CT images.
目的
本前瞻性研究旨在比较二维（2D）全景片和三维（3D）锥形束 CT 对上颌埋伏尖牙手术治疗计划的影响。
方法
本研究共纳入 32 名患者（19 名女性，13 名男性），平均年龄 25 岁，因 39 颗上颌埋伏尖牙需行手术干预而就诊。初始时均有 2D 全景片，在临床指征下获得 3D 锥形束 CT 成像。随后由 6 名观察者分析 2D 和 3D 术前影像学诊断套。由治疗外科医生进行围手术期评估。采用 McNemar 检验、层次逻辑回归和线性混合模型来探讨两种成像方式的评估结果是否存在差异。
结果
基于 3D 图像的治疗计划比基于 2D 图像的治疗计划具有更高的置信水平（p<0.001）。3D 图像在牙冠位置、接触关系和侧切牙牙根吸收方面的评估明显优于 2D 图像。相比之下，两种图像模式之间的术前和围手术期评估无显著差异。
结论
上颌埋伏尖牙的手术治疗计划在全景片和锥形束 CT 图像之间无显著差异。
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