Sc. Parmar et al., FACIAL ASYMMETRY WITH SEVERE UNILATERAL HYPOPLASIA OF THE MUSCLES OF MASTICATION - A REPORT OF CLINICAL AND ELECTROMYOGRAPHIC FINDINGS, British journal of oral & maxillofacial surgery, 34(1), 1996, pp. 107-109
Mild degrees of asymmetry of the human body have been recognised both
by classical sculptors and more recently by anatomists as both normal
and widely occurring.(1) Morphologic asymmetries of the face of a more
severe nature are, however, quite rare. When such deformities occur,
both the hard and soft tissues may be involved and the abnormality may
be acquired as a result of trauma, infection, neoplasia or surgery or
be of a developmental origin as in the syndromes affecting the first
pharyngeal arch. Developmental asymmetries of the jaws map also arise
as a result of unilateral disruption of mandibular development during
the time of normal facial growth leading to hemiretrognathism.(2) Seve
re hypoplasia of the muscles of mastication on one side only has not p
reviously been reported.