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Teeth01:15

Teeth

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 and...
Tooth Anatomy01:21

Tooth Anatomy

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 grinding food.

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Related Experiment Video

Updated: Jul 9, 2026

The Slice Culture Method for Following Development of Tooth Germs In Explant Culture
07:47

The Slice Culture Method for Following Development of Tooth Germs In Explant Culture

Published on: November 13, 2013

Incremental dental development: methods and applications in hominoid evolutionary studies.

Tanya M Smith1

  • 1Department of Human Evolution, Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, D-04103 Leipzig, Germany. tsmith@eva.mpg.de

Journal of Human Evolution
|November 30, 2007
PubMed
Summary

Dental microstructure analysis offers precise insights into hominoid evolution and life histories. Further research is needed to standardize methods for accurate developmental variable quantification.

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Last Updated: Jul 9, 2026

The Slice Culture Method for Following Development of Tooth Germs In Explant Culture
07:47

The Slice Culture Method for Following Development of Tooth Germs In Explant Culture

Published on: November 13, 2013

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

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Area of Science:

  • Paleoanthropology
  • Developmental Biology
  • Bioarchaeology

Background:

  • Dental microstructure studies provide detailed information on tooth development.
  • Conventional radiographic methods lack precision in identifying developmental milestones.
  • Understanding developmental variables is crucial for reconstructing life histories.

Purpose of the Study:

  • To review recent methods for quantifying dental developmental variables.
  • To assess the application of these methods in hominoid evolution studies.
  • To identify areas for future research and method standardization.

Main Methods:

  • Analysis of incremental features in dental microstructure.
  • Quantification of daily secretion rate, line periodicity, extension rate, and formation time.
  • Comparison of various preparative and analytical techniques.

Main Results:

  • Dental microstructure analysis allows precise identification of tooth crown initiation and completion.
  • Accurate estimates of crown and root formation speed, duration, and developmental stress are achievable.
  • These methods have yielded insights into fossil hominin and Miocene hominoid life histories.

Conclusions:

  • Dental microstructure studies offer significant advantages over conventional methods for understanding development.
  • There is a need for validation and standardization of existing methods.
  • Future research should focus on integrating nondestructive techniques for comprehensive analysis.