I went with GMT to Nicaragua for 2 weeks last month, and I have to say that it was well worth it. 22 of us were on the trip, and 4 of us were pre-dental. The rest did med stuff all day, but the 4 of us were able to get some really good hands on experience. We had 7 clinic days for about 7 or 8 hours a day in which we each had a large amount of experience cleaning teeth, restoring teeth with amalgam and composite material, giving injections, and extractions. Dr. Wil Johnson and Santiago Mora run a great program that I have nothing but praises for. Dr. Helder Torres, a Nicaraguan dentist and our dentist for the trip ,was a joy to be around. He is also very talented at what he does. If you would like to know more about my experience, i'd be happy to tell more as well as share pictures of what we did.