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Discovering Middle Ear Anatomy by Transcanal Endoscopic Ear Surgery: A Dissection Manual

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Accessory mental foramen: a rare anatomical finding.

Gagan Thakur¹, Shaji Thomas, Sumeeth Cyriac Thayil

¹Department of Oral & Maxillofacial Surgery, People's College of Dental Sciences and Research Centre, Bhanpur, Bhopal, Madhya Pradesh, India.

BMJ Case Reports

|June 19, 2012

Summary

Accessory mental foramina (AMF) are rare mandibular variations. Identifying AMF during surgery is crucial to prevent nerve damage and ensure successful treatment for conditions like trigeminal neuralgia.

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Area of Science:

Anatomy
Oral Surgery
Neurology

Background:

Accessory mental foramen (AMF) is a rare anatomical variation.
Prevalence ranges from 1.4% to 10%.
AMF can lead to neurovascular complications if not identified during surgical procedures.

Observation:

Careful surgical dissection is necessary to detect AMF.
Failure to identify AMF can result in neurosensory disturbances or hemorrhage.
Trigeminal neuralgia was diagnosed in the reported case.

Findings:

Peripheral neurectomy of the mental nerve was planned.
The mental nerve branch originated from an AMF.
Accurate identification of the AMF was critical for the surgical plan.

Implications:

Failure to address the AMF could lead to persistent trigeminal neuralgia pain.
Recognition of AMF is vital for successful surgical outcomes in the mandible.
This case highlights the importance of considering rare anatomical variations in surgical planning.