I agree are they cavities or fillings. Cavities are a different aspect. I actually have never heard about this DQ. Typically the big DQ for dental is wisdom teeth issues or braces.
Our DS has all of his wisdom teeth, none came in impacted, but at UPT they do one more dental check, and there was a student washed back to the next class because they had 1 impacted wisdom tooth that needed to be extracted. I think now a day they will give a DQ until they are removed. Once removed the DQ is removed. The same is true for braces once removed.
At least that is what I know.
FWIW, I would spend more time on getting all of their medical records from age 13 on in order.