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Invisalign® products (including Invisalign® aligners, Vivera® retainers and the Invisalign® Palatal Expander System) are custom‑made orthodontic devices prescribed and supplied by dental professionals. THESE PRODUCTS ARE NOT AVAILABLE FOR PURCHASE BY THE GENERAL PUBLIC. THESE PRODUCTS ARE AVAILABLE ONLY FROM AN INVISALIGN®‑TRAINED DENTIST OR ORTHODONTIST. ALWAYS FOLLOW THE DIRECTIONS FOR USE.