Infraorbital canal bilaterally replaced by a lateroantral canal

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• 作者：M. C. Rusu ; M. Săndulescu ; O. C. Ilie
• 关键词：Maxillary sinus ; Orbit ; Cone beam computed tomography (CBCT) ; Maxillary nerve ; Infraorbital nerve
• 刊名：Surgical and Radiologic Anatomy
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：37
• 期：9
• 页码：1149-1153
• 全文大小：1,103 KB
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• 作者单位：M. C. Rusu (1)
  M. Săndulescu (2)
  O. C. Ilie (3)
  
  1. Division of Anatomy, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, 8, Eroilor Sanitari Blvd., Sector 5, 050474, Bucharest, Romania
  2. Division of Oral Implantology, Faculty of Dental Medicine, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
  3. Department of Anatomy, “Victor Babeş” University of Medicine and Pharmacy, Timişoara, Romania
  
• 刊物主题：Imaging / Radiology; Orthopedics; Anatomy;
• 出版者：Springer Paris
• ISSN：1279-8517

文摘

The infraorbital canal (IOC) normally courses above the maxillary sinus in the orbit floor. During a retrospective study of cone beam computed tomography (CBCT) scans, we found a previously unknown variant of the IOC. The IOCs were absent, being replaced by lateroantral canals coursing around and not above the maxillary sinus to open at infraorbital foramina which were located above the second upper premolar teeth. On coronal multiplanar reconstructions, the lateroantral canals were located anatomically at the outer limit of the zygomatic recess of each maxillary sinus, while the upper wall of the sinus was devoid of any canal. Such rare variant should be kept in mind by dental practitioners and surgeons, as it can determine modifications of common procedures. In this regard, the anatomy of maxilla, as well as mandible, should be evaluated in CBCT on a case-by-case basis.