This thread is 2 years old... doubt the posters will post anything. However, most Dentist's i have seen actually put together a CV rather than a resume. I would also suggest you do the same since your career thus far has been mostly academic.
Unless you have some quality work experience i would probably just put it briefly.
Things to include would be: education, internships, research, scholarships, awards, leadership positions, special training (EMT, RDA, etc), and possibly awesome volunteer experiences.
Google: Dentist CV/Resume or Student CV/Resume for examples