下颌舌侧管能否用作法医指纹？
Can mandibular lingual canals be used as a forensic fingerprint?
作者信息
Mowafey Bassant, Van de Casteele Elke, Youssef Jilan M, Zaher Ahmed R, Omar Hany, Politis Constantinus, Jacobs Reinhilde
机构信息
OMFS IMPATH research group, Dept. Imaging & Pathology, Faculty of Medicine, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.
Periodontology, Oral Medicine, Diagnosis, and Oral Radiology Department, Faculty of Dentistry, Mansoura University, Egypt.
出版信息
J Forensic Odontostomatol. 2015 Dec 1;33(2):26-35.
OBJECTIVES
This study aimed to identify whether the lingual canals of the mandible can be used as a unique fingerprint when dealing with forensic victim identification.
MATERIALS AND METHODS
The study consisted of two parts; an observational part and an objective image analysis part. In the observational part a total of 100 in vivo high resolution CBCT datasets of human mandibles were included in the process of simulated matching of ante-mortem (AM) and post-mortem (PM) data. For the objective image analysis part 10 dry human mandibles were scanned with 2 different Cone Beam Computed tomography (CBCT) machines. In the observational part of the study trained observers attempted to correctly identify matching pairs of images taken from the same mandible out of a series of 100 mandibles. The aim was to simulate matching of the neurovascular structures on AM and PM mandibular midline images and determine the percentage of mandibles identified correctly. In the objective image analysis part, simulated matching was carried out using a specific CBCT dataset acquired to mimic a PM dataset and 10 datasets acquired from a different CBCT device which served as the source of potential AM cases. Comparison between AM and PM datasets resulted in the matching of the AM data and PM data obtained from the same mandible, leading to an assumed correct identification.
RESULTS
The observational part of the study showed an average 95% correct identification of the mandibular midline neurovascular structures. Registration of mandibles resulted in perfect overlap of the same mandible from 2 different CBCT machine with an error distance equalling zero, while the registration of different mandibles deviated on average error distance 0.13 mm to 0.18 mm.
CONCLUSION
The percentage of fit for the simulated AM and PM data of the same mandible was 100%. This finding together with the significant deviations noted for the non-matching cases, may have a potential role in forensic identification in the same way that fingerprints are recognised as being a unique identifying feature.
目的
本研究旨在确定在下颌骨进行法医受害者身份鉴定时，下颌舌管是否可作为独特的指纹。
材料与方法
本研究包括两个部分；一个观察部分和一个客观图像分析部分。在观察部分，总共100例人类下颌骨的体内高分辨率CBCT数据集被纳入生前（AM）和死后（PM）数据的模拟匹配过程。对于客观图像分析部分，使用2台不同的锥形束计算机断层扫描（CBCT）机器对10例干燥的人类下颌骨进行扫描。在研究的观察部分，训练有素的观察者试图从100例下颌骨系列中正确识别出取自同一下颌骨的匹配图像对。目的是模拟AM和PM下颌中线图像上神经血管结构的匹配，并确定正确识别的下颌骨百分比。在客观图像分析部分，使用获取的特定CBCT数据集模拟PM数据集，并使用从不同CBCT设备获取的10个数据集作为潜在AM病例的来源进行模拟匹配。AM和PM数据集之间的比较导致了从同一下颌骨获得的AM数据和PM数据的匹配，从而实现了假定的正确识别。
结果
研究的观察部分显示，下颌中线神经血管结构的平均正确识别率为95%。下颌骨配准导致来自2台不同CBCT机器的同一下颌骨完美重叠，误差距离等于零，而不同下颌骨的配准平均误差距离为0.13毫米至0.18毫米。
结论
同一下颌骨的模拟AM和PM数据的拟合百分比为100%。这一发现以及在不匹配病例中发现的显著偏差，可能在法医鉴定中具有潜在作用，就像指纹被认为是独特的识别特征一样。
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