The functional status of orthodontically treated prognathic patients

In order to study the prevalence of mandibular dysfunction in orthodontically treated prognathic patients after retention, 60 randomly selected patients were examined clinically. The functional status of the patients was evaluated using the anamnestic, clinical dysfunction index, and the index for occlusal status introduced by Helkimo. Our patients showed a better functional status than the untreated prognathic patients, but one poorer than that of the general population. No difference, as demonstrated by indices, could be found between chin-cup and non chin-cup group, or between the conservatively treated and surgically treated prognathic patients without pre-orthodontic treatment.