How detailed does it get? I published a research article a year ago. Of course, I remember the overall results and methodology but do not remember all the nitty gritty numbers. Is that ok?
I don't think they are going to worry too much about specifics of your research. If they are going to quiz you about it at all it will probably be along the lines of "What was your research experience like and how has it made you a better student/applicant?" or something along those lines. I wouldn't worry about it.
They dont care about nitty gritty details and would never ask something like that. Expect something more like:
"I see here you did some research in undergrad, do you think that's something you might like to do in dental school? Can you tell us a little more about that?"