RESUMEN
This study was conducted on a sample of thirty patients selected from Orthodontics department de'Montmorency College of dentistry/ Punjab dental Hospital, Lahore. The purpose of study was to evaluate treatment effects of Distal Jet Appliance during Class-II molar correction with a focus on the magnitude of Maxillary first molar distalization, its tipping, extrusion, rotation as well as anchorage loss at premolar-incisor unit. Pre and post distalization lateral cephalogram and study cast were used as evaluation tools. Results showed that there was 3.88 mm space created during 7.11 months; out of which 2.93 mm [75.52%] showed molar distalization while 0.93 mm [24.48%] premolar mesialization as anchorage loss. There was 3.41% molar tipping with 0.20 mm extrusion and second premolar showed 7.33% distal tipping, 0.90 mm extrusion whereas Incisors showed 1.65% labial tipping