Grettlin, Your Pre-health advisor is correct! To boost your pre-dental resume, you should get lots of hours in shadowing/observing dentists or dental specialists. Now days all our applicant colleagues has 3.5 GPAs and 20/20 DATs, you want to distinguish yourself and your application by having ample orientation to dentistry. Plus, I want to say that many dental schools now are strongly suggesting their applicants to have x amount of hours of dental exposure to be even considered! Now a couple of thing that I want to add: 1) Volunteering in hospital is not a bad thing to add to your resume! Anytime where you have opportunities to interact with people in a clinical setting is a plus for your dental application! Just make sure that you also get some dental exposure in dental clinics to orient yourself to your dream profession of dentistry. 2) About "hundreds of hours" in a dental clinics? Obviously the more the better, but as long as you go once a week for a couple of months, you'd surprised how fast those hours add up! Make sure you jot everything down from the date and time to what you saw/experienced! In my opinion, there are four major components to any applicant that admissions committee does look at: A) GPA B) DAT scores C) Orientation to Dentistry D) You (EC, motivation, maturity, etc.) You obviously want to boost as much as you can in all four areas. If you lack in one, then try to increase in others. Hey thanks for asking me, I hope that my $0.02 helped! Happy shadowing and be sure to ask questions about what you saw. You'd be amazed how much you'll learn!