Laparidis, Constantinos2006-12-282006-12-2819991999http://hdl.handle.net/2440/19456Bibliography: leaves 187-211.288 leaves : col. ill. ; 30 cm.An observational retrospective study to determine if any difference exists in the soft tissue profile of Class II division 1 patients before and after treatment with three different functional appliances; the activator with headgear, the Clark Twin Block, and the Frankel.69668 bytesapplication/pdfenFacial bones Abnormalities Surgery.Facial bones Surgery Prognosis.Orthodontics, Corrective Prognosis.Jaws Surgery Prognosis.Cephalometry.A retrospective cephalometric study of the effect of the Frankel appliance, the Clark Twin Block and the activator on class II division / by Con Laparidis.Thesis