2 FRSC 7104 – Chapter 8 Objectives After studying this chapter, the student should be able to: Recognize the basic anatomy of the human dentition and understand the process of tooth development Understand the determinations that are incorporated in the analysis of teeth and bitemark evidence
3 FRSC 7104 – Chapter 8 Outline Introduction (Human Identification) Bitemark ImpressionsHistory of Forensic OdontologyClass vs. Individual Characteristics
5 Teeth Through the Years ChildhoodAdulthoodPrimary teeth sprout from milk buds and are temporary. Once they fall out, permanent teeth as seen on the other side appear.Permanent adult teeth come in when primary teeth fall out; they are permanent because they establish roots inside the gums. Third molar come in around the mid teenage years.
8 FRSC 7104 – Chapter 8 Outline Various Surfaces Human skin Dragmarks Bitemark vs. Time of DeathOffensive vs. DefensivePassage of time since BitemarkDNA
9 State of Florida v. Ted Bundy Ted Bundy, was an American serial killer who murdered numerous young women between 1974 and 1978.He confessed to 30 murders, however the total amount of victims remains unknown. He would bludgeon his victims, then strangle them to death. He engaged in rape and necrophilia.Evidence, various pictures from trial
10 FRSC 7104 – Chapter 8 OutlineAnalytical Techniques in Forensic OdontologyDescriptionTypes of injuriesHemmorhageContusionAbrasionLacerationAvulsionArtifact1) Low forensic significanceVery mild bruising, no individual tooth marks present, diffuse arches visible, may be caused by something other than teethObvious bruising with individual, discrete areas associated with teeth, skin remains intactVery obvious bruising withNumerous areas of laceration, with some bruising, some areas of the wound may be incised. Unlikely to be confused with any other injury mechanism and a small lacerations associated with teeth on the most severe aspects of the injury, likely to be assessed as definite bite markPartial avulsion of tissue, some lacerations present indicating teeth as the probable cause of the injuryComplete avulsion of tissue, possibly some scalloping of the injury margins suggested that teeth may have been responsible for the injury. May not be an obvious bite injury2) Moderate forensic significance3) High forensic significance4) High forensic significance5) Moderate forensic significance6) Low forensic significance
11 FRSC 7104 – Chapter 8 Outline Evidence Collection from Victim Evidence Collection from SuspectComparisons
14 FRSC 7104 – Chapter 8 Outline Results Chapter Summary: Dental identification can be conducted through comparison of dental remains to either antemortem or postmortem recordsForensic anthropology plays a central role in the identification of people who are not identifiable by fingerprints or photographsBitemark evidence is a form of impression evidence that can play an important role in the outcome of a case