 Based on a review of literature, it appears that the incidence of class III malocclusions is at most 4.2 percent. The temporomandibular condyle behaves uniquely and cannot grow against intermittent or continuous forces. The cybernetic model proposed by Petrovich and co-workers does not seem to have much validity. The lateral pterigoid muscle and temporomandibular condylar freedom do not comply with results of conlodomy studies. Increasing pressure applied to the condyle could decrease condyle cell. Proliferation and growth is controlled by physical restraint. This article was authored by Viewing Christian Van.