Canalis sinuosus: a rare anatomical variation
Frederico Sampaio Neves1, Mady Crusoé-Souza, Luiz Carlos Simões Franco
1Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, State University of Campinas, Piracicaba, São Paulo, Brazil.
Surgical and Radiologic Anatomy : SRA
|December 3, 2011
Summary
This study details a rare bilateral anatomical variation of the anterior superior alveolar nerve (canalis sinuosus) found in CBCT scans. Identifying such variations is crucial for preventing nerve damage during dental procedures.
Area of Science:
- Anatomy
- Radiology
- Dentistry
Background:
- The infraorbital canal typically transmits the anterior superior alveolar nerve via a small branch known as the canalis sinuosus.
- Anatomical variations in the maxilla are infrequently documented, often involving the nasopalatine canal.
Observation:
- This article presents a rare case of a bilateral accessory canal originating from the lateral wall of the nasal cavity.
- The accessory canal terminated at an accessory foramen on the hard palate, near the maxillary lateral incisor.
Findings:
- Cone beam computed tomography (CBCT) imaging revealed a rare anatomical variation of the anterior superior alveolar nerve (canalis sinuosus).
- This variation involved a bilateral accessory canal extending from the nasal cavity to the hard palate.
Implications:
- Recognizing individual anatomical variations, particularly through CBCT, is vital for surgical planning.
- Accurate identification can help surgeons avoid inadvertent nerve injuries during procedures like dental implant placement.
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