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An anatomical variant: evaluation of accessory canals of the canalis sinuosus using cone beam computed tomography
Affiliations- Department of Dentomaxillofacial Radiology, Ankara University, Ankara, Turkey, Ankara Universitesi Dis. hek. fak Besevler/ankara, 06500 Ankara, Türkiye
- Department of Biostatistics, Yildirim Beyazit University, Ankara, Turkey, Faculty of Medicine, Ankara Ataturk Training & Research Hosp, Ankara, Türkiye
- Department of Dentomaxillofacial Radiology, Faculty of Gulhane Dentistry, Health Sciences University, Ankara, Turkey, Ankara, Türkiye
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Abstract
Background: The anatomical variation of the anterior superior alveolar nerve described as canalis sinuosus (CS) is a less known structure of anterior maxilla. Due to the fact that it contains anterior superior alveolar nerve as well as veins and arteries, exact localisation of this structure will allow surgeons to avoid complications. Hence, the aim of this study was to verify the presence, reveal the frequency and characteristics of accessory canals of CS.
Materials and methods: This study was based on retrospective evaluation of cone beam computed tomography (CBCT) scans. A total of 1460 CBCT images were analysed and collected data were noted. The following parameters were recorded: age, sex, presence or absence of CS, location in relation to the adjacent
teeth and impaction of canine teeth.
Results: A total of 6668 accessory canals were found in 1460 CBCT images. Of these, 672 (46.0%) were from female patients, and 788 (54.0%) were from male patients. 1034 (70.8%) of 1460 images had at least one accessory canal of CS. Maxillary intercentral region is the area where accessory canals were seen most
frequently (n = 653, 44.72%).
Conclusions: Canalis sinuosus is a bony canal which is incidentally found and less known structure of anterior portion of maxilla. Knowing the accessory canals deriving from this structure will allow surgeons to avoid complications and non-integration after dental implant procedures. Conventional imaging modalities have limited value in detecting this neurovascular structures. Therefore CBCT may have an important role for accurate diagnosis to reveal anatomical variations.
Abstract
Background: The anatomical variation of the anterior superior alveolar nerve described as canalis sinuosus (CS) is a less known structure of anterior maxilla. Due to the fact that it contains anterior superior alveolar nerve as well as veins and arteries, exact localisation of this structure will allow surgeons to avoid complications. Hence, the aim of this study was to verify the presence, reveal the frequency and characteristics of accessory canals of CS.
Materials and methods: This study was based on retrospective evaluation of cone beam computed tomography (CBCT) scans. A total of 1460 CBCT images were analysed and collected data were noted. The following parameters were recorded: age, sex, presence or absence of CS, location in relation to the adjacent
teeth and impaction of canine teeth.
Results: A total of 6668 accessory canals were found in 1460 CBCT images. Of these, 672 (46.0%) were from female patients, and 788 (54.0%) were from male patients. 1034 (70.8%) of 1460 images had at least one accessory canal of CS. Maxillary intercentral region is the area where accessory canals were seen most
frequently (n = 653, 44.72%).
Conclusions: Canalis sinuosus is a bony canal which is incidentally found and less known structure of anterior portion of maxilla. Knowing the accessory canals deriving from this structure will allow surgeons to avoid complications and non-integration after dental implant procedures. Conventional imaging modalities have limited value in detecting this neurovascular structures. Therefore CBCT may have an important role for accurate diagnosis to reveal anatomical variations.
Keywords
canalis sinuosus; anatomical variation; cone beam computed tomography
About this articleTitle
An anatomical variant: evaluation of accessory canals of the canalis sinuosus using cone beam computed tomography
Journal
Issue
Article type
Original article
Pages
551-557
Published online
2018-01-08
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3097
Article views/downloads
2167
DOI
Pubmed
Bibliographic record
Folia Morphol 2018;77(3):551-557.
Keywords
canalis sinuosus
anatomical variation
cone beam computed tomography
Authors
K. Orhan
C. Gorurgoz
M. Akyol
S. Ozarslanturk
H. Avsever
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