Optimizing Anterior En Masse Retraction with Miniscrew Anchorage
(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.
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