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For a long time, I am using at the same time :
• A buccal distalizing system to distalize teeth in the buccal segments without any extra-oral traction. The mechanical properties of NiTi archwires allow the delivery of a light and continuous force regardless of the shape of the archwire or of its deflection; it is then possible to use rectangular archwire at the very beginning of an orthodontic treatment.
• Shape memory thermal NiTi archwires for arch leveling.
The MDA arch is the only arch to feature a rectangular cross-section in the incisors' region, in a second step it will allow a molar distalization while keeping the orientation given to the incisors during the leveling phase.
THIS IS ILLUSTRATED BY THE CLINICAL CASE BELOW