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Related Concept Videos

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.
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...

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Related Experiment Video

Updated: Jun 22, 2026

Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures
09:10

Digital Hybrid Model Preparation for Virtual Planning of Reconstructive Dentoalveolar Surgical Procedures

Published on: August 5, 2021

Automatically generating subject-specific functional tooth surfaces using virtual mastication.

H Saini1, J N Wadell, A J Pullan

  • 1Bioengineering Institute, The University of Auckland, Private Bag 92019, Auckland 1, New Zealand.

Annals of Biomedical Engineering
|June 2, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a virtual masticator to reconstruct accurate tooth surfaces using chewing data. The method quickly removes occlusal interferences, aiding dental restoration design.

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Area of Science:

  • Biomechanical Engineering
  • Dental Technology
  • Computational Anatomy

Background:

  • Accurate geometrical models of teeth are crucial for understanding mastication.
  • Simulating natural chewing trajectories is complex but essential for functional analysis.

Purpose of the Study:

  • To develop a subject-specific virtual model of mastication (virtual masticator).
  • To automatically reconstruct functional tooth surfaces by removing occlusal interferences.
  • To assess the efficiency of the reconstruction process using real chewing data.

Main Methods:

  • Combining high-accuracy geometrical tooth models with recorded natural chewing trajectories.
  • Utilizing a shape-optimization algorithm to eliminate collisions during simulated mastication.
  • Testing the virtual masticator with a subject's chewing data and generic/actual teeth.

Main Results:

  • The virtual masticator successfully reconstructed functional tooth surfaces.
  • Errors in the occlusal and functional regions ranged from -90 to 200 µm.
  • Occlusal interferences were removed within three chewing cycles, indicating rapid convergence.

Conclusions:

  • A small number of chewing cycles is sufficient for accurate occlusal interference removal in virtual tooth models.
  • Automatically reconstructed tooth surfaces can guide the design of CAD/CAM dental restorations.
  • This technology offers valuable insights for designing dental implants and bridges.