Optimizing Anterior En Masse Retraction with Miniscrew Anchorage
Figure 9
(a, b, c) MSPAs were inserted in the auxiliary molar tube and slot of the miniscrew head at all four quadrants. Mandibular MSPAs were without vertical-hooked-arm. Due to less initial crowding and increased overjet, maxillary en-masse retraction was started earlier. Mandibular canine retraction continued further keeping them in class I relation.
