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Related Concept Videos

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: May 27, 2026

The Establishment of a Murine Maxillary Orthodontic Model
04:11

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

[A six-canal maxillary first molar: case report].

Ping Zhang1

  • 1Stomatological Department of Peking University Third Hospital. Beijing, China. kqzhangping@163.com

Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
|November 24, 2011
PubMed
Summary

This case study details a rare dental anomaly: a maxillary first molar with six root canals. Successful root canal therapy highlights the importance of identifying unusual root canal anatomy for effective treatment.

Area of Science:

  • Endodontics
  • Dentistry
  • Dental Morphology

Background:

  • Maxillary first molars typically exhibit complex root canal systems.
  • Variations in root canal anatomy can pose challenges in endodontic treatment.
  • Accurate diagnosis of root canal morphology is crucial for successful outcomes.

Observation:

  • A case of a right maxillary first molar with an unusual presentation of six root canals is reported.
  • Detailed root canal therapy and case management strategies were employed.
  • The tooth exhibited complex internal anatomy requiring meticulous treatment planning.

Findings:

  • The successful endodontic treatment of a maxillary first molar with six canals was achieved.
  • The case underscores the variability of root canal anatomy encountered in clinical practice.

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Last Updated: May 27, 2026

The Establishment of a Murine Maxillary Orthodontic Model
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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

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  • Detailed radiographic and clinical examination identified all canals.

    • Implications:

    • Clinicians must be vigilant in searching for additional canals and aberrant root canal morphology.
    • Failure to identify unusual root canal systems can lead to endodontic treatment failure.
    • Recognizing and treating complex root anatomy improves prognosis in challenging endodontic cases.