The interview went very well nothing to be nervous about!
I would say just review your application, and be prepared to talk about anything you have written about. They may ask you to talk about something, then they may ask follow up questions based on your answer. The best advice I can give is be confident in yourself! You know why you're here, you know what you have written, you know who you are. Just be prepared to back it up and tie key components together. They want to know who you are as a person, that's all. They do not have access to GPAs or DAT scores because they want to know your story.
It may also benefit you to keep in mind the four pillars of medical ethics. If they ask an ethics question, you are free to introduce hypothetical scenarios or personal experiences to support an arguement to the given question.
Also, just take a breath and a few moments to think about the question before you answer it! This will benefit you for both the interview and the writing prompt (10 minute prompt, absolutely nothing to sweat about). Make sure you understand what is being asked so that you can answer it fully and not go on a tangent.
The faculty and students are very approachable and welcoming. They are here to help you get in to dental school.
This interview should be the most laid back and comfortable! Good luck and let us know how it goes