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Related Experiment Video

Updated: Dec 24, 2025

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration

Published on: May 5, 2020

Bell's Palsy: A Prospective Study.

Ahmed Hassan Kamil Mustafa¹, Ahmed Mohammed Suleiman^2,3

¹King Saud Bin Abdulaziz University for Health Sciences, Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Riyadh, Saudi Arabia.

International Journal of Dentistry

|April 8, 2020

Summary

Bell's palsy recovery decreases with attack severity. Exposure to cold showed a strong association with Bell's palsy development in Sudanese patients.

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Area of Science:

Neurology
Epidemiology

Background:

Bell's palsy is acute idiopathic facial nerve paralysis, a common cause of lower motor neuron facial nerve paralysis.
Annual incidence ranges from 15-30 per 100,000 population.
Sudanese patients were studied to understand Bell's palsy attack grades and associated symptoms.

Purpose of the Study:

To investigate the severity of Bell's palsy attacks.
To identify symptoms associated with Bell's palsy in Sudanese patients.
To evaluate the prognosis and recovery rates based on attack severity and symptoms.

Main Methods:

An analytical prospective study was conducted.
48 patients diagnosed with Bell's palsy were evaluated.
The House-Brackman scale was used to assess facial nerve paralysis severity.

Main Results:

50% of patients experienced postauricular pain; 10.4% reported hearing changes.
83.3% of patients achieved complete recovery by the study's end.
A strong association was found between cold exposure and Bell's palsy onset.

Conclusions:

Complete recovery rates diminish with increasing initial attack severity.
No correlation was found between postauricular pain and Bell's palsy prognosis.
High incidence of hearing changes and a strong link between cold exposure and Bell's palsy were observed, warranting further large-scale research.