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Related Concept Videos

Bone Markings01:26

Bone Markings

Bones have various surface features that help form joints and attach to other soft tissues. Depending on the function, bone markings are categorized into articulating projections, processes for attachment, depressions, and openings.
Articulating Projections
Articulating projections are found where two bones meet to form a joint. These structures are usually found at the ends of bones. The largest articulation is a rounded projection called the head, supported by a narrow neck at the ends of...
Eyewitness Memory01:22

Eyewitness Memory

Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
Effects of EDTA on End-Point Detection Methods01:18

Effects of EDTA on End-Point Detection Methods

Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...

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Related Experiment Video

Updated: Jun 22, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
07:26

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Expert disagreement in bitemark casework.

C Michael Bowers1, Iain A Pretty

  • 1Forensic Dentist and Deputy Medical Examiner, Ventura County Medical Examiner's Office, CA, USA.

Journal of Forensic Sciences
|June 3, 2009
PubMed
Summary
This summary is machine-generated.

Bitemark analysis shows lower forensic value in child abuse cases. Expert agreement and DNA evidence significantly impact the reliability of bitemark evidence in legal proceedings.

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Area of Science:

  • Forensic Odontology
  • Legal Medicine

Background:

  • Bitemark analysis is frequently controversial due to expert disagreement.
  • Assessing the forensic significance of bitemarks is crucial for legal cases.

Purpose of the Study:

  • To evaluate the forensic significance of bitemark evidence.
  • To analyze factors influencing the reliability of bitemark analysis, including crime type, expert agreement, and judicial outcomes.

Main Methods:

  • A case mix of 49 bitemark cases from 2000 to 2007 was analyzed.
  • Each injury was independently assessed for forensic significance using a bitemark severity scale.
  • Data were categorized by crime type, expert agreement, and judicial outcome.

Main Results:

  • Bitemarks in child abuse cases showed statistically significantly lower forensic value compared to other crime types.
  • Bites with mutual expert agreement had higher forensic value than those with disagreement.
  • Cases with DNA exoneration demonstrated similar evidence quality to conviction cases.

Conclusions:

  • Forensic odontologists must carefully assess bitemark evidence for minimum class and unique features.
  • Expert agreement and corroborating evidence like DNA are critical for reliable bitemark analysis.
  • The forensic value of bitemark evidence varies significantly based on context and expert consensus.