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Related Concept Videos

Teeth01:15

Teeth

240
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...
240
Tooth Anatomy01:21

Tooth Anatomy

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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...
262

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Updated: May 10, 2025

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Tooth shape asymmetry in post-canine dentition: Evidence-based morphometric insights.

Srikant Natarajan1, Junaid Ahmed2, Shravan Shetty3

  • 1Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Mangalore, Manipal Academy of Higher Education, Manipal, India.

Journal of Oral Biology and Craniofacial Research
|April 28, 2025
PubMed
Summary
This summary is machine-generated.

Dental asymmetry varies between sexes, with premolars and certain molars showing more asymmetry. Understanding this dental variation is crucial for diagnosis and treatment planning in dentistry.

Keywords:
AnatomyDentistryGeometric morphometryInnovationSexual dimorphismTooth

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Area of Science:

  • Anthropology
  • Dentistry
  • Evolutionary Biology

Background:

  • Investigates dental asymmetry in tooth shape and landmark locations.
  • Examines variations in tooth anatomy between sexes.

Purpose of the Study:

  • To evaluate dental symmetry and asymmetry in post-canine dentition.
  • To analyze variations in anatomical landmarks between left and right sides of teeth.

Main Methods:

  • Utilized 3D geometric morphometrics on 160 patients (aged 13-20).
  • Focused on post-canine dentition, analyzing anatomical landmark variations.

Main Results:

  • Significant shape differences were observed in most teeth, excluding the 3-cusp mandibular second premolar.
  • Asymmetry was more pronounced in maxillary premolars and specific mandibular teeth (second premolar, first molar).
  • No significant difference in centroid size was found between sexes.

Conclusions:

  • Highlights the evolutionary significance of bilateral symmetry.
  • Suggests fluctuating asymmetry may be linked to genetic or environmental factors.
  • Emphasizes the importance of dental asymmetry knowledge for diagnosis and treatment planning in restorative dentistry and orthodontics.