ShawnOne,
I highly doubt that the average student graduating dental school will be making $100,000 in his or her first year out. More and more students are doing GRP and AEGD to hone their skills. Even if you get an associateship, you have to consider that your productivity won't be as high as someone who has been practicing for 10 years. I don't care what school you go to, your skills just won't be as good.
In addition, you need to take a look at dollar amount AFTER taxes. If you attend a private school, with monthly stipend, your looking at approximately $220,000 or more for school. You will make only between $40,000 and 50,000 for the next four years, wh/ after taxes, I estimate to be around 31,000 a year, or 124,000. All totaled, this equals $344,000.
Even in an associateship I feel most students won't get, you will make $400,000 over those four years. After taxes, (and you will pay a higher percent) that's probably around $275,000. In addition, you will be paying off your loans with this after tax money.
This doesn't include the additional pay for housing, etc. you may or may not get in the services. Last thing, and I also don't want to fight as I don't even know if I'm going to choose to go the military route, is the point about being stuck. I don't consider spending four years seeing the world as a waste of time. Yeas, you may get stuck somewhere that sucks for a while, but you may be all over Europe, which sounds pretty sweet to me.
I'm sure I could add more, but I'll quit. Maybe I'm just trying to convince myself why I should do it.