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Related Experiment Video

Updated: Feb 10, 2026

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

Published on: February 23, 2024

[Maxillary first premolar with four canals: a case report].

Yang Meng¹, De-Gang Sun¹

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

|May 21, 2018

Summary

This summary is machine-generated.

This case report details the discovery of a maxillary first premolar with three roots and four canals. Successful root canal therapy was confirmed using advanced imaging and microscopy.

Keywords:

maxillary first premolar root canal anatomy root canal treatment

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Area of Science:

Endodontics
Dental Anatomy
Radiology

Background:

The maxillary first premolar typically exhibits two roots and three canals.
Anatomical variations in root and canal morphology can complicate endodontic treatment.
Accurate diagnosis is crucial for successful root canal therapy.

Observation:

A rare case of a maxillary first premolar with three roots and four canals was identified.
Diagnosis involved clinical examination, multi-angle radiography, and cone-beam computed tomography (CBCT).
The extra canal was located through careful intraoperative observation.

Findings:

Confirmation of a three-rooted maxillary first premolar with four distinct root canals.
CBCT imaging provided detailed three-dimensional visualization of the complex root canal system.
Microscopic analysis verified the successful completion of root canal therapy.

Implications:

Highlights the importance of thorough diagnostic procedures in endodontics.
Underscores the potential for significant anatomical variations in maxillary premolars.
Emphasizes the role of advanced imaging techniques like CBCT in managing complex endodontic cases.