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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 9, 2026

The Establishment of a Murine Maxillary Orthodontic Model
04:11

The Establishment of a Murine Maxillary Orthodontic Model

Published on: October 27, 2023

Maxillary first molar with two root canals.

Saeed Rahimi1, Negin Ghasemi

  • 1Dental and Periodontal Research Center, Department of Endodontics, Tabriz Dental School, Tabriz University of Medical Sciences, Tabriz, Iran.

Sultan Qaboos University Medical Journal
|July 18, 2013
PubMed
Summary

This case report details a rare maxillary first molar with two roots and two root canals. Understanding complex maxillary molar anatomy is crucial for successful endodontic treatment.

Keywords:
Case reportDental Pulp Cavity, abnormalitiesIranMaxillary BoneRoot Canal Therapy

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Area of Science:

  • Dentistry
  • Endodontics
  • Anatomy

Background:

  • Maxillary molar anatomy is vital for endodontic success.
  • While maxillary first molar morphology is well-documented, variations like two canals in a two-rooted tooth are seldom reported.
  • This highlights potential complexities in root canal anatomy.

Purpose of the Study:

  • To report a rare case of a maxillary first molar exhibiting two roots and two root canals.
  • To emphasize the importance of detailed anatomical knowledge in endodontic diagnosis and treatment planning.

Main Methods:

  • A case report of a patient referred for endodontic treatment.
  • Detailed examination of the maxillary first molar's root and canal morphology.

Main Results:

  • The maxillary first molar presented with two distinct roots.
  • Two separate root canals were identified within the molar.
  • This anatomical variation is infrequently documented in existing literature.

Conclusions:

  • The presence of two roots and two canals in a maxillary first molar, though rare, can occur.
  • Thorough understanding of tooth anatomy and potential variations is essential for effective endodontic therapy.
  • Clinicians should consider such anomalies during endodontic procedures.