Is your GPA good? What about your dat? If everything is a go then I would start saving up... Work and save because there will be some unexpected charges coming your way once you are dental school. You get loans but having money for a computer, moving, first rent/deposit, first grocery bill, class dues, loupes, and whatever else is always nice 🙂 Don't forget all of the interviews you will be going to...
If money is in order then enjoy yourself and your time off! Continue to do service and maybe try to get hooked up with a free dental clinic or something to get some more exposure to dentistry...