3D Quad Helix
Unlike the Quadhelix part of the active appliances on bands, that of the 3D system is removable. Maxillary expansion can be obtained with the springs of this appliance. These springs enable correcting molars and their rotation, but also buccal or lingual tipping of crowns, along with the buccal or lingual torque of roots. Moreover, this system's Quadhelix is fitted with two lateral parallel arms that create pressure on the lingual surface of the premolars and cuspids in order to increase expansion.
Material required for manufacturing
– Lower or higher stone model
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