Structure & Function of Teeth (Obj 11.1, 11.2)

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Presentation transcript:

Structure & Function of Teeth (Obj 11.1, 11.2) Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Structure & Function of Teeth (Obj 11.1, 11.2) 20 deciduous (baby) teeth No premolars 32 permanent (adult) teeth Incisors Canines Molars dentition pattern - the pattern made by a particular set of teeth Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Estimating Physical Characteristics (Obj 11.3,11.4) A forensic odontologist compares dental records with the victim’s remains Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

A forensic odontologist uses: Dental alterations —fillings, caps, bridgework, and dentures Teeth—size, shape, gaps, cracks, alignment, missing or extra one, wears, stains Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

A forensic odontologist uses: Dentition—the pattern made by a particular set of teeth Bruxism- the grinding of teeth can help identify age, however this is not accurate. Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Age Estimation How do teeth come in? Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Check this out! Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Ancestry Estimation Examining physical characteristics CANNOT absolutely determine an unidentified person’s ancestry. Certain characteristics are more common within certain population groups Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Ancestry Estimation The shape of the decedent’s incisors can be a useful feature, but cannot provide positive evidence. Fewer than 10% of European and African decent have this feature Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Sex Estimation Very difficult to determine with teeth Male teeth—generally larger Female teeth—canines tend to be more pointed Craniofacial differences make sex determination more accurate Forensic Science II: Forensic Odontology, Chapter 11 © 2012 Cengage Learning. All Rights Reserved

Tooth or Consequences