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Individual Evidence Bite marks, like fingerprints, are unique forensic odontologist will make a cast or take pictures of the bite marks  

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Presentation on theme: "Individual Evidence Bite marks, like fingerprints, are unique forensic odontologist will make a cast or take pictures of the bite marks  "— Presentation transcript:

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2 Individual Evidence Bite marks, like fingerprints, are unique forensic odontologist will make a cast or take pictures of the bite marks

3 Types of Bites A 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.

4 Clear, obvious, noticeable

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6 Individual and Class Characteristics
A human bite mark will be elliptical or circular and will display the specific characteristics of the teeth   List 5 class characteristics

7 Food can be evidence Comparing the Bite patterns on food

8 Measurements

9 Matching mold to bite mark

10 Analysis of Bite Mark

11 Class Characteristics
Shape of arch Tooth alignment thickness width spacing Missing teeth Other unique features

12 Terminology Positive identification-exact match
Possible identification-consistencies exist, but not enough to make an exact match Insufficient evidence-not enough evidence Exclusion-does NOT match

13 Part 1: Make an Impression
1 – Fold the Styrofoam plate in half. 2 – Label one side MAXILLA and the other MANDIBLE. 3 – Gently bite down on the plate to leave your bite mark 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. 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. Maxilla Mandible Depth Maxilla Width Mandible


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