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Related Concept Videos

Teeth01:15

Teeth

413
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
413
Tooth Anatomy01:21

Tooth Anatomy

468
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
468

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Identifying teeth and tooth fragments from digital 3D models.

S Mânica1, R Merdietio Boedi2, H Pandey1

  • 1Centre for Forensic and Legal Medicine and Dentistry, School of Dentistry, level 7, University of Dundee, Nethergate, Dundee DD1 4HN, Scotland, United Kingdom.

Morphologie : Bulletin De L'Association Des Anatomistes
|March 8, 2024
PubMed
Summary

3D scanned dental models show potential for virtual identification in forensic odontology. However, accuracy varies, highlighting the need for continuous skill assessment in human and animal tooth morphology.

Keywords:
3D modelsAnimal toothDental anatomyDental anatomy educationTooth fragmentsTooth identification

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Area of Science:

  • Forensic Odontology
  • Digital Imaging
  • Anthropology

Background:

  • Dental anatomy is crucial for human identification in forensic odontology.
  • Virtual autopsies and consultations offer solutions for remote or disaster-stricken areas.
  • 3D scanning technology presents new avenues for virtual forensic dental analysis.

Purpose of the Study:

  • To evaluate the benefits and challenges of identifying human and animal teeth using 3D scanned digital models.
  • To assess the accuracy of forensic odontologists in identifying teeth from 3D models.
  • To explore the utility of 3D models for virtual forensic dental consultations.

Main Methods:

  • Ten 3D tooth models (9 human, 1 animal) were created and hosted online.
  • A three-part survey was distributed to 60 forensic odontologists.
  • The survey assessed participant demographics, tooth identification accuracy, and perceived usefulness of 3D models.

Main Results:

  • A 58% response rate was achieved.
  • Substantial agreement was found in classifying teeth into broad categories (e.g., molars) and within specific tooth types (e.g., lateral incisors).
  • Lowest agreement (k=0.21) and mean accuracy (0.34) were observed for FDI notation identification, with common errors in third molar identification.

Conclusions:

  • 3D-scanned teeth can be virtually identified, but challenges remain, particularly with specific tooth types and notation systems.
  • Forensic odontologists must maintain and enhance their skills in dental anatomy and morphology for both human and animal teeth.
  • Virtual consultation using 3D models holds promise but requires further validation and standardized protocols.