Abstract
The transpalatal arch (TPA) can be used as an adjunct during orthodontic treatment to help control the movement of the maxillary first molars in three dimensions including molar rotations, uprighting and maintaining transverse dimensions posteriorly. In addition it can also be used to maintain leeway space, as an additional anchorage to achieve active movement of teeth, modified for space maintenance, intrusion, etc. Here modified Transpalatal arch is used with E-chain - a non-compliant mechanics for correction of Maxillary 2 nd
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