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HERO ID
6248848
Reference Type
Journal Article
Title
Anatomic study on mental canal and incisive nerve canal in interforaminal region in Chinese population
Author(s)
Xu, Y; Suo, N; Tian, X; Li, F; Zhong, G; Liu, X; Bao, Y; Song, T; Tian, H
Year
2015
Is Peer Reviewed?
1
Journal
Surgical and Radiologic Anatomy
ISSN:
0930-1038
EISSN:
1279-8517
Volume
37
Issue
6
Page Numbers
585-589
Language
English
PMID
25519298
DOI
10.1007/s00276-014-1402-7
Web of Science Id
WOS:000358173400003
Abstract
PURPOSE:
This study was aimed to detect the positions of mental canal and incisive nerve canal as well as the prolongation of mandibular canal in interforaminal region in Chinese population to supply the reference data of the surgical safe zone in chin for clinicians.
MATERIALS AND METHODS:
A total of 80 formalin-fixed semi-mandibles of Chinese adult cadavers were dissected, the positions and courses of mental canal and incisive nerve canal as well as the prolongation of mandibular canal in interforaminal region were measured.
RESULTS:
The mental foramina were present in all cases (100 %), and most of them were located below 2nd premolar (58.75 %). Accessory mental foramina were observed in 5 %. The anterior end of mandibular canal, extending along the course of 7.37 ± 1.10 mm above the lower border of mandible to interforaminal region about 3.54 ± 0.70 mm medial to the mental foramen, most often ended below between the two premolars (73.75 %), where it continued as the incisive nerve canal (100 %) and the mental canal (96.25 %). Mental canal, with the wall formed by compact bone, being 2.60 ± 0.60 mm in diameter and 4.01 ± 1.20 mm in length, opened into mental foramen. Incisive nerve canal, with the wall formed by thin compact bone and/or partly or completely by spongy bone, being 1.76 ± 0.27 mm in diameter and 24.87 ± 2.23 mm in length, extended to the incisor region along the course of 9.53 ± 1.43 mm above the lower border of mandible, and most often ended below the lateral incisor (70.00 %).
CONCLUSION:
This research recommended for chin operations in Chinese population: the surgical safe zone could be set in the region about over 4 mm anterior to the mental foramen, and over 12 mm above inferior border of mandible for anterior alveolar surgery, or within 9 mm above inferior border of mandible for genioplasty.
Keywords
Mandibular canal; Mental foramen; Mental canal; Incisive nerve canal; Anatomy
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