Author(s): Ammad Rasul Ghumman,1 Muhammad Saleem,2 Omar Afzal,3 Zain Ul Abidin,4 Umar Asif,5 Farrukh Aslam Khalid6
Pages: 41-44 | DOI: https://doi.org/10.5455/pjps.16733521361224
Background: Among many causes of asymmetrical smile in newborns, congenital hypoplasia of the depressor
anguli oris muscle (DAO) is among rare ones. This asymmetry may continue to adulthood, as many patients
may present with varying degree of smile animation discrepancies.
Objective: to show the efficiency of ant belly of digastric transfer for reanimation of lower lip in congenital
depressor angulioris hypoplasia
Methodology: This case series comprises of 05 patients with congenital hypoplasia of depressor anguli oris
muscle. These patients were not associated with other syndromes, congenital anomalies or paralysis of other
branches of facial nerve. All were operated with the anterior belly of digastric mucle transfer (ABDMT).
Results: After mean follow up of 12 months, satisfactory outcomes were accomplished in all patients with all
exhibiting improved symmetry during full mouth opening.
Conclusions: ABDMT proved to be most reliable method for restoration of depressor function which lead to
excellent aesthetic and functional animation of lower face.
Keywords | Congenital depressor anguli oris, Marginal mandibular nerve , Asymmetrical smile
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