ADEA reports the number enrolled, not the number of acceptances given. Schools will look at their past yield and use that to decide how many people to accept. Many people get multiple offers, but everybody who gets any acceptances can only choose one school to attend.
I would hope that schools do not just give out interviews like candy. For jobs, people are usually brought to an onsite interview only if the company intends to accept the candidate if they don't screw up. But in the case of a job interview, the company pays for the candidate's travel expenses which can add up to hundreds or even over $1000 (so they obviously want to be careful about where their resources are going), whereas in the case of a dental school interview, we are responsible for our own travel expenses. It would be a waste of our time and money if a school offered us an interview when we have a low chance of acceptance in the first place.