Özet:

This study offers the treatment of a severe Class III phenomenon, which is also a front-open closure, performed with orthodontic-chirurgical cooperation. Our 22-year-old female patient, along with severe Class III maloclution, shows dental and skeletal characteristics such as lower neck advancement, upper neck tension, upper middle line deviation, 4 mm front open closure and down-top neck incompatibility. Damon system, a passive selfligating system, has been applied to the orthodontic treatment of the adult. After orthodontic treatment, surgery was carried out on both sides to fix the incompatibility of the lower-top chest. In the treatment of severe skeletal class III malocluzyons, more aesthetic and stable results are achieved with the joint application of orthodontic and ortogenic surgery. The Damon system, in addition to the self-ligating brakes that control the swelling, also provides advantages such as increasing the patient's comfort, reducing the number of appointments and the time spent on the patient and shortening the treatment time.