Surgical and Radiologic Anatomy

, Volume 37, Issue 9, pp 1149–1153 | Cite as

Infraorbital canal bilaterally replaced by a lateroantral canal

  • M. C. RusuEmail author
  • M. Săndulescu
  • O. C. Ilie
Anatomic Variations


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.


Maxillary sinus Orbit Cone beam computed tomography (CBCT) Maxillary nerve Infraorbital nerve 


Conflict of interest



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© Springer-Verlag France 2015

Authors and Affiliations

  1. 1.Division of Anatomy, Faculty of Dental Medicine“Carol Davila” University of Medicine and PharmacyBucharestRomania
  2. 2.Division of Oral Implantology, Faculty of Dental Medicine“Carol Davila” University of Medicine and PharmacyBucharestRomania
  3. 3.Department of Anatomy“Victor Babeş” University of Medicine and PharmacyTimişoaraRomania

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