As you can see from the before photos, my bottom teeth were all kinds of crooked. To get started with Smile Direct Club, I visited a SmileShop, where they performed a 3D scan of my smile using a wand.

Dr. Chandiramani recommends cleaning your retainer with toothpaste and a toothbrush — which should be different from the one you use to clean your teeth. "After brushing your teeth in the ...