乳猪肢体牙痕损伤的形态学研究

发布时间：2018-04-17 15:51

本文选题：牙痕 + 法医学　；参考：《华西口腔医学杂志》2008年01期

【摘要】：目的观察乳猪肢体牙痕形态变化,深入了解咬痕的发生发展规律。方法用万能试验机和自制上颌中切牙压头在乳猪肢体上形成牙痕损伤模型。利用数码细目拍照、计算机图像分析和激光光学三维测量观察24h内不同生存状态下牙痕淤斑及凹痕变化。结果生存组乳猪肢体牙痕形态变化快于死亡组;24h内牙痕淤斑变化不明显;牙痕深度和面积在形成初期迅速下降,而后变化缓慢。结论乳猪肢体牙凹痕变化迅速,提示在实际案件中应及早尽快地搜集咬痕证据。
[Abstract]:Objective to observe the morphological changes of teeth marks in limbs of suckling pigs and to understand the occurrence and development of bite marks.Methods using a universal testing machine and a self-made maxillary central incisor head to form a tooth scar injury model on the limbs of suckling pigs.Digital detail photography, computer image analysis and laser optical 3D measurement were used to observe the changes of dental mark and indentation in different survival states within 24 hours.Results the morphological change of limb tooth mark in survival group was faster than that in dead group within 24 hours, and the depth and area of tooth mark decreased rapidly at the initial stage of formation, and then the change was slow.Conclusion Dental dent changes rapidly in the limbs of suckling pigs, suggesting that evidence of bite marks should be collected as soon as possible in actual cases.
【作者单位】：同济大学口腔医院修复科口腔疾病研究国家重点实验室
【基金】：国家自然科学基金资助项目(30600720) 上海市启明星计划资助项目(07QA14057)
【分类号】：D919

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