Dental School Loan

I was very lucky and was able to get accepted to dental school. The only problem is that the loan for dental school is 500k at 8% this seems absurd to me. Have you guys been able to pay off such a loan on a dentists salary and live comfortably? For those who didn’t have to pay such a great amount would you go into dental school if this is what you had to pay. I’m very stressed because I don’t want to be paying this loan off till I’m 50 but dental school is a great opportunity (I’m 25 now). If you make 100k after taxes a lot of that net salary would have to go to repay the loan. Or are general dentist making a lot more than 100k gross income??? I have been hearing the salaries have been going down and the average salary before tax is around 200k.