This study evaluated histologically the temporomandibular joint and posterior ramal regions in juvenile Rhesus monkeys whose mandibles had been positioned forward with a Herbst appliance. Acrylic splint Herbst appliances were bonded to the maxillary and mandibular dental arches of 20 male juvenile animals. The animals were killed at 3-, 6-, 12-, and 24-week intervals after appliance placement. ...
