1. Find out when your registration dates are. This is the window that your school will probably require you to 'pay' your tuition and check to see if you have the funds for registration. These are the dates you most likely need to accept your financial aid by. Search "[dental school's name] 2020 registration dates."
2. The loans that you accept will require paperwork as well. If it is a federal loan, you will be required to sign a 'master promissory note.' This will take additional days to process so do not accept your loans last minute.
3. You need to talk to your school to see how they disburse your loans. My school will split the amount I want into 2 (I have 2 registration dates). So for me if I need 30k one semester and 20k during second semester, and I borrow '50k.' This amount would actually split in half and I would get 25k/25k. If it's complicated like this, you need to talk to your school's financial aid department.