The really nice thing about dentistry is not so much that you get to go to dental school (whether easier or not) ... the best part is that you don't need to go through internship & residency, which is where the heavy lifting really takes place for the physicians in training. Also, most dentists have a better work schedule than physicians.
So, yes, if you are looking for a shorter / easier path toward a professional career with a great lifestyle, I would certainly look at a career as a dentist. This may come as a shock, but just because something is more difficult or competitive doesn't mean it is a better career. My dentist is perfectly happy with his job and often jokes about how his physician friends had to go through much more school than he did. He was originally a pre-med, but his mom talked him out of it; he is glad she did. You should pick what is right for you, but I wouldn't assume that getting into dental school and completing it is going to be a cakewalk.c However, it is a career worth checking into whether you can get admitted to medical school or not.