{"title":"Mandibular left first premolar with three roots and three canals: A case report.","authors":"Cheng-Yi Lin, Yue-Yuan Yu","doi":"10.12998/wjcc.v13.i13.100822","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>The numbers of mandibular first premolar roots and root canals vary, and the incidence of three roots and three canals is 0.09%.</p><p><strong>Case summary: </strong>In this article, we review the root and root canal conditions for the mandibular first premolar and report the case of a mandibular left first premolar with three roots and three canals in a male patient, with suggestions for clinical diagnosis and treatment. The patient was referred by an orthodontist for the extraction of the tooth. Preoperative cone-beam computed tomography examination revealed that it had three roots. Under local anesthesia, the extraction socket was carefully expanded, and the tooth was successfully removed intact using forceps. The procedure was uneventful, with no root fractures, postoperative bleeding, or sensory abnormality observed.</p><p><strong>Conclusion: </strong>The mandibular first premolar is characterized by multiple roots and canal variations that can increase the difficulty of treatment.</p>","PeriodicalId":23912,"journal":{"name":"World Journal of Clinical Cases","volume":"13 13","pages":"100822"},"PeriodicalIF":1.0000,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11736522/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"World Journal of Clinical Cases","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.12998/wjcc.v13.i13.100822","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MEDICINE, GENERAL & INTERNAL","Score":null,"Total":0}
引用次数: 0
Abstract
Background: The numbers of mandibular first premolar roots and root canals vary, and the incidence of three roots and three canals is 0.09%.
Case summary: In this article, we review the root and root canal conditions for the mandibular first premolar and report the case of a mandibular left first premolar with three roots and three canals in a male patient, with suggestions for clinical diagnosis and treatment. The patient was referred by an orthodontist for the extraction of the tooth. Preoperative cone-beam computed tomography examination revealed that it had three roots. Under local anesthesia, the extraction socket was carefully expanded, and the tooth was successfully removed intact using forceps. The procedure was uneventful, with no root fractures, postoperative bleeding, or sensory abnormality observed.
Conclusion: The mandibular first premolar is characterized by multiple roots and canal variations that can increase the difficulty of treatment.
期刊介绍：
The World Journal of Clinical Cases (WJCC) is a high-quality, peer reviewed, open-access journal. The primary task of WJCC is to rapidly publish high-quality original articles, reviews, editorials, and case reports in the field of clinical cases. In order to promote productive academic communication, the peer review process for the WJCC is transparent; to this end, all published manuscripts are accompanied by the anonymized reviewers’ comments as well as the authors’ responses. The primary aims of the WJCC are to improve diagnostic, therapeutic and preventive modalities and the skills of clinicians and to guide clinical practice in clinical cases.
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