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Mandibular left first premolar with three roots and three canals: A case report
Cheng-Yi Lin1, Yue-Yuan Yu1,2
1School of Stomatology, Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China.
World Journal of Clinical Cases
|May 7, 2025
Summary
Mandibular first premolars exhibit root and canal variations, with a rare 0.09% incidence of three roots and canals. This case highlights diagnostic and treatment challenges for such anatomical anomalies.
Area of Science:
- Endodontics
- Dental Anatomy
Background:
- Mandibular first premolars display significant variability in root and root canal morphology.
- The occurrence of three roots and three canals is exceptionally rare, estimated at 0.09%.
Observation:
- A case report details a mandibular left first premolar with three distinct roots and canals.
- Cone-beam computed tomography confirmed the three-rooted anatomy prior to extraction.
- The tooth was successfully extracted intact without complications.
Findings:
- The mandibular first premolar can present with complex root configurations, including three roots and three canals.
- Anatomical variations in mandibular premolars can complicate endodontic diagnosis and treatment planning.
Implications:
- Awareness of rare root canal variations is crucial for endodontic success.
- Advanced imaging techniques like CBCT aid in diagnosing complex root anatomy.
- This case underscores the importance of thorough preoperative assessment for tooth extraction and endodontic procedures.
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