Anth 245 1st Edition Lecture 16Outline of last lecture- Dental anatomy - Dentition Basics - Tooth labeling systemOutline of Current Lecture - Bite Marks- Morphology of Bite Marks- Forensic SignificanceCurrent Lecture Bite Marks - Patterned skin injuries produced by teeth - Associated with violent crimes - Sexual assault - child abuse - homicide - Domestic violence - Hold potential to ID the Perpetrator Objectives of Bite Mark Analysis - Recognize bite mark - Bruising may obscure tooth patterns - Accurate documentation and collection - Swab immediately for saliva/DNA - Close-up photography with scales and an alternative light source, impressions - Compare to teeth of alleged perpetrator - However, bite marks can be on perpetrator, too - Must work quickly - Bite marks heal and degrade over time Morphology of Bite Marks - Depends on: - Presence of clothing- Movement of people - Location of bite (fleshy skin or not) - Amount of healing or decomposition since wound was inflicted - Age of Victim - Skin color of victim Not all bite marks have the same forensic significance - No standards, rules, or regulations for bite mark analysis - Skin does not typically record the details of each tooth - Distortion of bite mark frequent - Misidentifications are much too common - 63% of certified dentists gave false positives - false positive rate of 15% among dental students Film The new detectives case studies in forensic
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