Well... MWU-AZ is like $100,000 a year currently before any living expenses, so at the very least $400000 at graduation not counting tuition increases and accruing interest during 4 years of school and 4/6 years of residency, plus I'm pretty sure average starting salary is less than $400k right out of residency, plus for most people at that point there could be a spouse and kids, plus rent or mortgage on a family home, plus probably two cars for most families and plenty of other expenses. I don't know how realistic paying off loans in 2 years is.
@Big Time Hoosier may be trying to scare people, but he's doing it because so many people think they'll just do OMFS which realistically only 5(ish)% of dental graduates do, and that then they'll be able to pay off their loans in 2 years which probably still wouldn't be true.