Just suck it up, graduate, and get your dental degree.
Dental school isn’t a place meant to pamper you like your royalty.
Also, if you think all that is unfair, welcome to the “real world” where even when you get your dental degree there’s annoying colleagues, workplace situations, office politics, patients, administration, etc that you still have to deal with.
There’s worse things out there which you should have learned from volunteering at more “unfortunate places” (assuming you did your work to get into dental school and wrote about how you want to help others, are empathetic, etc. etc. like the typical stuff ppl say on their apps)
So my advice:
suck it up, do the work, then graduate and make room for all the other ppl who want to go to dental school.
No one wants a complainer.