Ali Ibrahim K, Sansare Kaustubh, Karjodkar Freny R
From the Department of Oral Medicine and Radiology, Nair Hospital Dental College, Mumbai, Maharashtra, India.
Am J Forensic Med Pathol. 2018 Sep;39(3):213-217. doi: 10.1097/PAF.0000000000000399.
Bite marks on foodstuff at the crime scene provide a 3-dimensional imprint of the suspect's dentition. The bite mark analysis can provide useful evidences, leading to the inclusion or exclusion of the individual under investigation. This study was designed to assess bite marks on various common foodstuffs (chocolate, apple, chewing gum, cheese) for different time intervals using cone beam computed tomography (CBCT) to evaluate the dimensional changes in the foodstuffs. Analysis of variance test was used to compare the bite marks measured using CBCT in maxillary and mandibular arches with significance set at P < 0.05. The results show that teeth can transfer their characteristics to the bitten foodstuffs. The highest accuracy for comparative bite mark analysis was observed in chocolate followed by cheese, chewing gum, and apple. The CBCT-assisted analysis of bite marks is a nondestructive, accurate, and efficient method. The CBCT documentation has no distortion artifacts, and subsequent analysis in 3-dimensional space is possible.
犯罪现场食品上的咬痕提供了嫌疑人牙列的三维印记。咬痕分析可以提供有用的证据，从而确定或排除受调查的个人。本研究旨在使用锥形束计算机断层扫描（CBCT）评估不同时间间隔下各种常见食品（巧克力、苹果、口香糖、奶酪）上的咬痕，以评估食品的尺寸变化。采用方差分析测试来比较使用CBCT在上颌和下颌牙弓中测量的咬痕，显著性设定为P < 0.05。结果表明，牙齿可以将其特征转移到被咬的食品上。在巧克力上观察到的比较咬痕分析的准确率最高，其次是奶酪、口香糖和苹果。CBCT辅助的咬痕分析是一种无损、准确且高效的方法。CBCT记录没有失真伪影，并且可以在三维空间中进行后续分析。
