Well I nanny for an OMFS who just did the DDS and I can say he is rolling in the dough... so if you are looking at a lifestyle choice know that you can do just the DDS with OMFS and do fine- he did residency at Emory (dental school in Philly) and has his own office. He works 3 full days and 2 half days a week (but takes 4-6 wks of vaca a year)...
I have no clue how much he makes exactly but I know he has paid all school debt, paid off a huge house and most of a lake house, has investment properties, paid for cars (nice), and 3 kids with a fourth on the way...and he is less than 10 years outta dental school... I will be moving to med school and chances are he will be hiring a live in nanny.
Seems like a good field but he does do a ton of wisdom teeth removals- he says those are what pays the bills and all the other stuff are the personal rewards (like implants, surgeries, etc)... I can't remember how much he gets paid for wisdom teeth removal cuz he just did mine for free. He also took call at Grady (level 1 trauma) for extra pay when he was setting up his private practice but now he doesn't and spends tons of time with the kids.