Fig. 4

The initial class II malocclusion (a,b, T0) is worsening to more than half a unit during levelling and aligning (c,d). At the beginning of en masse distalization (T1), the lower curve of spee is levelled and the inclination of the upper incisors has improved (c,d). The buccal MSs are inserted with a 30 degree angle compared to the adjacent teeth. A few months later, the overjet is reduced and now the buccal screws have to be removed (e,f). Further bite correction achieved with the help of the palatal screws only, which now are removed (T2). Note the intrusion in the upper lateral segments (g,h). Final result (T3) after maxillary en masse distalization with upper torque control (i,j). A bilateral class I canine relationship and a normal overjet could be achieved