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Tooth Anatomy

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.

Teeth

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 20, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Six root canals in maxillary first molar.

Fábio de Almeida-Gomes¹, Claudio Maniglia-Ferreira, Bruno Carvalho de Sousa

¹Department of Endodontics, University of Pernambuco, Brazil. fabiogomesce@yahoo.com.br

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics

|September 1, 2009

Summary

A rare case of a maxillary first molar with six root canals was identified. This unusual anatomy requires careful consideration during endodontic treatment to avoid persistent postoperative discomfort.

Related Experiment Videos

Last Updated: Jun 20, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Area of Science:

Dentistry
Endodontics
Anatomy

Background:

Maxillary first molars typically exhibit predictable root canal anatomy.
Variations in root canal morphology can complicate endodontic procedures.

Observation:

An unusual case of a maxillary first molar presenting with six root canals was documented.
This complex anatomy was identified during clinical and radiographic evaluation.

Findings:

The presence of six root canals in a single maxillary first molar is exceedingly rare.
Failure to identify such complex anatomy can lead to treatment challenges.

Implications:

Accurate diagnosis of root canal morphology is crucial for successful endodontic therapy.
Clinicians must be aware of rare anatomical variations to prevent endodontic treatment failures and persistent symptoms.