GenetIic and Environmental Influence
Genetic Influence certainly plays a role in dentofacial deformities. Patterns of inheritance, such as a familial tendency toward a prognathic or deficient mandible, are often seen in a patient with a dentofacial deformity.
However, the multifactorial nature of facial development precludes the prediction of an inherited pattern of a particular facial abnormality.
an inuucdiatc result of trJUIIlJ. further effects on the development of fJcial bones may occur, which is most evident when ankvlosis of the mandibular condyle occurs as a result of trauma. In the CJ~e of temporomandibular
joint (I’~l.I) ankylosis ill a grO\\’illg child, alteration of growth may result from dcstructioi of the area of growth ill the T;”!J cartilage. as well as from limitntion in function. which decreases till’ influence of soft tissues on
developing hone (Fig. 25-2),