1) Dr. Kasberg said that while yes, there are 250-300 out of state students who are interviewed each year, there are about 180 out of staters that have interviewed so far. He said they offer all of the out of state spots by December 1st. Now, that does not mean every out of stater will take the spot. I am sure many people interviewed January and beyond have a decent chance to get a spot, however, he said they offer all their spots to out of staters and to in staters by December 1st. I am sure you know most schools do things this way (with some exceptions).
2) He also said that despite the fact that the class is made up of 65-70 in state students and 30-35 out of state students, they offer 40-60 out of state spots. These words are taken directly from his mouth. If you ask for a dental schools exact numbers they will show this trend....ie offering more people spots than a class is alloted to have. My state school offered something like 79 spots for what should have been a class of 60, however, 65 accepted the offer. Right before my interview he said "you have a 1:3 chance of getting in, dont be nervous" (60 spots/180 applicants). Thats where I got those numbers from.
Lastly, before I left, he said that those of us who interviewed later on have a slight advantage in that the interviewers will remember who we are slightly better than those who interviewed 1-2 months ago. Again, I am going by what Dr. Kasberg told me, I am not making this up. Good luck...oh and he said to call the school on December 1st to find out the status of your application.