Identification and Characterization of a Previously Undiscovered Anatomical Structure in Maxillary Second Molars: The Palato-Mesiobuccal Canal |
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| Affiliation: | 1. Dental Specialty Center, Brazilian Military Police, Minas Gerais, Brazil;2. Department of Endodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey;3. Department of Endodontics, Faculty of Dentistry, Ondokuz Mayıs University Samsun, Turkey;4. Department of Endodontics, Faculty of Dentistry, Bolu Abant İzzet Baysal University, Bolu, Turkey;1. Department of Periodontology, Medical University of Warsaw, Warsaw, Poland;2. Private Orthodontic Practice, Warsaw, Poland;3. Department of Orthodontics, Medical University of Warsaw, Warsaw, Poland;4. Department of Molecular Biology and Genetics, Medical University of Silesia, Katowice, Poland;6. Orthodontic and Dental Private Practice, Zabrze, Poland;5. Faculty of Humanities, University of Silesia, Katowice, Poland;1. Microscope Center, Department of Conservative, Yonsei University College of Dentistry, Seoul, Korea;2. Bionics Research Center, Biomedical Research Division, Korea Institute of Science and Technology (KIST), Seoul, Korea;3. Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea;4. Department of Oral and Maxillofacial Radiology, Yonsei University College of Dentistry, Seoul, Korea;6. Microscope Center, Department of Conservative Dentistry and Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea;5. Oral Science Research Center, Yonsei University College of Dentistry, Seoul, Korea;1. School of Dentistry of Ceará, São Leopoldo Mandic University, Campus Fortaleza, Fortaleza, Ceará, Brazil;2. Department of Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil;3. Post-graduate Program in Dentistry, Faculty of Pharmacy, Dentistry and Nursing, Federal University of Ceará, Fortaleza, Ceará, Brazil |
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| Abstract: | IntroductionThis report aims to communicate the discovery of a novel anatomy in a 3-rooted maxillary second molar, named as palato-mesiobuccal canal.MethodsThe tooth selected for this report was found incidentally as a result of a study on extracted maxillary molars that was being conducted for an unrelated purpose and involved hundreds of teeth. This 3-rooted maxillary second molar was scanned using a micro–computed tomography device set at a pixel size of 13.68 μm. The images were reconstructed with previously tested parameters resulting in the acquisition of 1655 axial cross-sections. Three-dimensional (3D) models of the internal and external anatomies were generated in Standard Tessellation Language (STL) format and were texturized to simulate the pulp tissue. The inner structure of the tooth was analyzed through the axial cross sections and the 3D volume was qualitatively evaluated.ResultsThe analysis of the 3D models revealed that the maxillary second molar under examination has 3 independent roots and 4 root canals. Each root (mesiobuccal, distobuccal, and palatal) contains 1 canal, while the fourth canal follows a unique path, originating in the coronal third of the palatal canal and proceeding in a buccal direction ultimately exiting through an independent foramen at the apex of the mesiobuccal root, near the mesiobuccal canal.ConclusionsThis brief communication reports the discovery of a novel anatomy in a 3-rooted maxillary second molar, named as palato-mesiobuccal canal, and provides important insights into the complexity of the root canal system in this group of teeth. |
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| Keywords: | Anatomy maxillary second molar micro-CT root canal |
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