i recently graduated from VCU undergrad and am now at another dental school.
When i interviewed, i had a 4th year student interview me and 2 faculty interviews. The student interview was a blind interview, meaning they hadn't read my application. It was very laid back and you just give an overview of yourself, your interests and your motivations for dentistry. There will be one "tough" interview...something like "why should we accept you." or "what is the most negative aspect of dentistry?" and there'll be a "nicer interview" about your interests and application.
There's also an essay to write on the spot...something like "how do i think my undergraduate courses will help me in dental school."
The essay is nothing to worry about it. According to a friend who was also an interviewer last year, they just use it to see how you think under pressure, but it's not weighted heavily at all.
Also, they were really interested in my dental experiences and my psychomotor skills.
VCU seems to pride themselves on the clinical abilities of their graduates, so they tend to look for people who can convey that they have good hand skills,and a good PAT score doesn't hurt.
It's a very laid back program and the best thing to do is to stay comfortable and be yourself. if you don't know the answer to a question. say that you don't because they can tell when you're B/S-ing. but if they ask you something requiring thought, it'll mainly be the generic interview questions "why do you want to be a dentist, why VCU, etc"
a couple of other pointers that might help with the conversation....VCU set a world record last summer with their Mission of Mercy (MOM) project. and they're really proud of their oral cancer research center. look it up on their website.
hopefully, this helps. i know they have a new dean of admissions this year, so things may have changed.
good luck.