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Instead of biting into a tray of impression putty, you get a digital scan. The iTero scanner is a small wand that captures your teeth and gums and turns them into a 3D model on screen. We use the scan for crowns, bridges, veneers, and implant crowns, and you can look at the model yourself while Dr. Chang explains what he's seeing. It's more comfortable than putty, especially if you have a strong gag reflex. We can also compare scans over time to spot changes like wear.