利用模板引导的重组计算机断层扫描进行种植治疗计划的准确性
Accuracy of implant treatment planning utilizing template-guided reformatted computed tomography.
作者信息
Besimo C E, Lambrecht J T, Guindy J S
机构信息
Department of Prosthodontics, School of Dentistry, University of Basel, Basel, Switzerland.
出版信息
Dentomaxillofac Radiol. 2000 Jan;29(1):46-51. doi: 10.1038/sj/dmfr/4600491.
OBJECTIVES
To evaluate the magnitude of error in transferring the planned position of implants from reformatted CT scans to a surgical template.
METHODS
The deviation between the position of the apex of the proposed implant in paraxial CT reformats and on the corresponding study cast was measured in 77 prospective sites in five maxillas and nine mandibles.
RESULTS
The transfer error was 0.6 (s.d. 0.4) mm in the maxilla and 0.3 (s.d. 0.4) mm in the mandible.
CONCLUSIONS
The transfer errors detected in this investigation are not clinically relevant. Other factors involved in transferring positional and angular measurements from reformatted CT to the surgical site may result in more significant errors.
目的
评估将种植体计划位置从CT重建图像转移至手术模板时的误差大小。
方法
在5例上颌骨和9例下颌骨的77个前瞻性位点测量拟植入种植体根尖在轴位CT重建图像上的位置与在相应研究模型上的位置之间的偏差。
结果
在上颌骨中转移误差为0.6（标准差0.4）mm，在下颌骨中为0.3（标准差0.4）mm。
结论
本研究中检测到的转移误差在临床上不具有相关性。将CT重建图像上的位置和角度测量值转移至手术部位时涉及的其他因素可能会导致更显著的误差。
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