I broke off a tooth on a bocadillo last November, a day short of Santiago. As I was in no pain, I waited to see my own dentist when I got home. I don't have insurance either, except for seniors dental insurance, which covers almost nothing and did not pay for the repair. You might see if you can get an estimate of the cost of the repair before committing yourself. My younger brother got a tooth repaired in Mexico last year. As it was something major and he left it until just before flying home, he had to fly back when there was a problem. I would suggest that you might try to get it done in Santiago if it is minor, but wait until you are home for anything major, as you own dentist will be responsible for complications. Good luck. I know what it is like to break a front tooth and feel self-conscious about your speech and appearance until it is fixed.