LONG-TERM EVALUATION AFTER CHINCAP TREATMENT

The purpose of this study was to investigate the skeletal changes occu rring during and after chincap therapy. The subjects of this study, wi th a mean age of 9 years 3 months, consisted of 27 patients; all of wh om possessed an anterior crossbite. Of these patients, 15 had skeletal Class III and the remaining 12 had skeletal Class I malocclusions wit h anterior crossbites. The applied total force with the chincap was 60 0 grams and the mean treatment period was 12 months. The changes durin g and after treatment were analysed by using linear and angular cephal ometric measurements. The result obtained in this investigation was th at in skeletal Class I and Class III cases, successfully treated by a chincap appliance, where the necessary overjet and overbite relationsh ip was obtained, the abnormality tended to return to the original posi tion during the period following chincap removal.