The extramandibular inferior alveolar nerve in cases with severely atrophic lower jaws

There are very few evidences on the extramandibular course (EMC) of the inferior alveolar nerve (IAN). We report here two such cases. The first one was encountered at dissection, in a human adult female cadaver where the right IAN terminal division was identified in the premolar region, above a seve...

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Bibliographic Details
Published in:Surgical and radiologic anatomy (English ed.) 2012-04, Vol.34 (3), p.277-279
Main Authors: Rusu, M. C., Săndulescu, M., Ciuluvică, R. C., Şendroiu, V. M., Didilescu, A. C.
Format: Article
Language:English
Subjects:
Aged
Anatomic Variations
Anatomy
Anatomy & physiology
Atrophy - diagnostic imaging
Atrophy - pathology
Biological and medical sciences
Biological variation
Female
General aspects
Humans
Imaging
Male
Mandible - diagnostic imaging
Mandible - pathology
Mandibular Nerve - anatomy & histology
Medical sciences
Medicine
Medicine & Public Health
Mouth
Nervous system
Orthopedics
Radiography
Radiology
Surgery
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Summary:There are very few evidences on the extramandibular course (EMC) of the inferior alveolar nerve (IAN). We report here two such cases. The first one was encountered at dissection, in a human adult female cadaver where the right IAN terminal division was identified in the premolar region, above a severely atrophied mandibular body. The second case was a patient evaluated by cone-beam CT, who presented with an extremely atrophic mandible with bilateral extramandibular courses of the IANs. Such severe atrophy of the mandible may be considered as residual ridge class 7 along with the existing Atwood classes. EMCs of the IAN may not only occur in extreme mandibular atrophy, but also in dentate mandibles. In edentulous mandibles, an extramandibular IAN may complicate local surgical procedures or hamper denture wearing.
ISSN:0930-1038
1279-8517
DOI:10.1007/s00276-011-0859-x