Lewis Cheri, Marroquin Leonor A
8500 Wilshire Blvd, Beverly Hills, CA, United States.
California State University, Los Angeles School of Criminal Justice and Criminalistics, 1800 Paseo Rancho Castilla, Los Angeles, CA 90032, United States.
Forensic Sci Int. 2015 Dec;257:293-296. doi: 10.1016/j.forsciint.2015.07.048. Epub 2015 Sep 21.
Bite marks have been reported to have an evidentiary value similar to fingerprints. We believed bite mark distortion would impact the accuracy and reliability of bite mark interpretation. Inked denture-stamps were substituted for actual bite marks and were placed onto 40 participating volunteers' shoulders. Four changes in arm position were photographed using an ABFO #2 reference scale. The measurements of individual tooth widths and intercanine distances in each position were compared. The maximum tooth width distortion observed was 53.8%, whereas the maximum intercanine distance distortion was 41.9%. Distortion was found to increase with age and weight and was non-uniform across a dental arch.
据报道，咬痕具有与指纹相似的证据价值。我们认为咬痕变形会影响咬痕解读的准确性和可靠性。用墨水涂抹的假牙印模替代实际咬痕，并将其放置在40名参与实验的志愿者的肩膀上。使用ABFO #2参考标尺拍摄手臂位置的四种变化情况。比较每个位置的单个牙齿宽度和犬齿间距离的测量值。观察到的最大牙齿宽度变形为53.8%，而最大犬齿间距离变形为41.9%。发现变形会随着年龄和体重增加，并且在牙弓上分布不均匀。
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