Optimizing Anterior En Masse Retraction with Miniscrew Anchorage
(a) Effect of space closure with conventional sliding mechanics without miniscrew. Anterior and posterior segments rotate around CR of each segment, archwire forced to bend near rotation of entire arch. These changes can easily be prevented with precurved archwires. (b) Retraction force from miniscrew anchorage with continuous archwire produces rotation of entire arch around Cres of dentition. (c) Rotation of anterior segment around Cres of anterior teeth.
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