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Related Experiment Video

Updated: Feb 2, 2026

The Establishment of a Murine Mandibular Molar Extraction Socket Healing Model
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[Mandibular first molar with C-shaped root canal system: a two-case report].

Di Wu1, Jin Zhang1, Wei Wang1

  • 1Dept. of Conservative Dentistry and Endodontics, Qingdao Stomatological Hospital, Qingdao 266000, China.

Hua Xi Kou Qiang Yi Xue Za Zhi = Huaxi Kouqiang Yixue Zazhi = West China Journal of Stomatology
|November 23, 2018
PubMed
Summary

Mandibular first molars rarely exhibit C-shaped root canal systems. This article details two unique cases, highlighting variations in their complex anatomy for endodontic treatment.

Keywords:
C-shaped root canal systemmandibular first molarroot canal treatment

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Area of Science:

  • Dentistry
  • Endodontics
  • Dental Anatomy

Background:

  • The mandibular first molar presents complex root and canal anatomy.
  • C-shaped root canal systems in mandibular first molars are uncommon, posing diagnostic and treatment challenges.

Observation:

  • This article presents two distinct cases of mandibular first molars with C-shaped root canal systems.
  • Case 1: A complete C-shaped fused root with a mesial lingual canal and a C-shaped fused canal.
  • Case 2: A C-shaped fused root in the buccal region and a separate distal lingual root, featuring a Type II-I canal configuration.

Findings:

  • Detailed anatomical descriptions of two rare C-shaped root canal systems in mandibular first molars.
  • Identification of specific canal configurations within the C-shaped systems, including fused and separate canals.
  • Illustrates the variability of complex root canal anatomy in this region.

Implications:

  • Understanding these rare anatomies is crucial for successful endodontic diagnosis and treatment planning.
  • Highlights the importance of advanced imaging techniques for identifying complex root canal morphology.
  • Contributes to the body of knowledge on dental anatomy, aiding clinicians in managing challenging cases.