![]() ![]() 5 – Use a ruler to make the measurements shown and record in the table below along with any notes regarding unique characteristics you observe in the teeth. ![]() Bite marks can be classified by four degrees of impression. 4 – Place a sheet of the plastic film over the impression and use a permanent marker to recreate the pattern to match that of your bite mark. relatively simple to record the evidence from the injury and the teeth for comparison of the. As with Richardson, the only physical evidence against Burke was the testimony of a bite mark expert who claimed to match Burke’s teeth to marks found on the victim. 3 – Gently bite down on the plate to leave your bite mark impression. The most common types of impression evidence found in the crime scene are footprints, tire tracks, bite marks and tool marks. 2 – Label one side MAXILLA and the other MANDIBLE. Possible identification-consistencies exist, but not enough to make an exact match Insufficient evidence-not enough evidence to make a determination Exclusion-does NOT matchġ – Fold the Styrofoam plate in half. These impressions can be left in off-road surfaces such as snow, mud, sand, or grass., Depending on how it is made, impression evidence may be either class evidence or trace evidence. Shape of arch Tooth alignment Thickness Width Spacing Missing teeth Other unique featuresġ7 Terminology Positive identification-exact match Study with Quizlet and memorize flashcards containing terms like Impressions fall into three basic categories: patent, latent, plastic, Plastic impressions are three - dimensional imprints. Will display the specific characteristics of the teethĩ The dark markings identify specific characteristics.įillings, caps, chips, evidence of dental workġ0 Types of Bites clear impression means that there was significant pressure Obvious bite signifies medium pressure noticeable impression means that the biter used violent pressure to bite down.ġ3 Food can be evidence Investigators can compare the bite patterns on the food to a known sample. These measurements can later be compared to a victim or suspectĦ Development of a child’s teeth can help estimate the age of a young victim.Ĩ A human bite mark will be elliptical or circular and Area is swabbed for traces of saliva (may contain DNA) Area is swabbed for microorganisms Impressions of the bite mark are madeĥ Measurements Investigators take careful measurements of the bite marks Photograph the area with a ruler near the injury (in color and B&W). Forensic odontologists will make a cast or take pictures of the bite marks Dental records including x-rays can also provide useful information, especially when attempting to identify a victim.ģ Individual Evidence Bite marks, like fingerprints, are unique to an individual. Saliva or blood may be left behind that can be tested for DNA. Marks can be left on a victim’s skin or other objects, such as Styrofoam cups, gum, or foods. ![]() Presentation on theme: "Bite Mark and Teeth Impression Evidence"- Presentation transcript:ġ Bite Mark and Teeth Impression EvidenceĢ How do forensics investigators use bite mark evidence?Īnalyze bite marks for characteristics to identify victims or suspects or exclude others. ![]()
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