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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: May 26, 2026

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model
04:19

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model

Published on: January 13, 2023

Mandibular first molar with three distal canals.

Shweta Jain1

  • 1Department of Conservative Dentistry and Endodontics, National Institute of medical Science Dental College, Jaipur, India.

Journal of Conservative Dentistry : JCD
|December 7, 2011
PubMed
Summary

This case report details a rare middle distal canal in a mandibular first molar. Awareness of such complex root canal anatomy is crucial for successful endodontic treatment.

Area of Science:

  • Endodontics
  • Dental Anatomy
  • Restorative Dentistry

Background:

  • Aberrant root canal morphology is increasingly reported in endodontic literature.
  • Mandibular first molars frequently present complex root anatomy.
  • Clinicians must be aware of anatomical variations for effective treatment.

Observation:

  • This case report focuses on a rare anatomical variation in a mandibular first molar.
  • The tooth exhibited two roots with a total of five root canals.
  • Specifically, the distal root contained three canals, including a middle distal canal.

Findings:

  • The distal root displayed a Sert and Bayirli Type XVIII canal configuration.
  • This configuration is characterized by three distinct canals within the distal root.
Keywords:
Distal rootmandibular first molarmiddle distal canalroot canals

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The Establishment of a Murine Maxillary Orthodontic Model
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Last Updated: May 26, 2026

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model
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The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model

Published on: January 13, 2023

The Establishment of a Murine Maxillary Orthodontic Model
04:11

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

  • The mesial root presented with two canals.

    • Implications:

    • Accurate diagnosis of complex root canal systems is essential for predictable endodontic outcomes.
    • This finding highlights the importance of thorough radiographic interpretation and cone-beam computed tomography (CBCT) in endodontics.
    • Understanding rare canal morphologies like the middle distal canal can improve treatment planning and success rates in challenging cases.