Patients with "only" incomplete paralysis, especially those who have already become accustomed to limited facial expression from birth, are much more difficult to satisfy than patients with marked flaccid paresis. Nevertheless, free muscle grafting to improve symmetry and function may be worthwhile. This patient underwent transplantation of a small gracilis muscle from the thigh to improve smile and mouth angle control. Postoperatively, more maxillary teeth are seen in wide laughter as well as a much more harmonious nasolabial fold (smile line between the nostril and corner of the mouth).