Most of the risk in an AI imaging tool doesn't come from the model being wrong on a good image — it comes from the model being confidently wrong on a bad one. An underexposed bitewing, a cropped panoramic missing the apex of a root, a blurred periapical: any of these can produce a finding that looks just as confident as one from a perfect image.
The quality assistant exists to catch that before it happens. It's the first thing that runs on any uploaded image, and nothing moves to analysis until it passes.