G.B.
If money is a real issue and you can qualify for assistance call the local medical university that has a dental program They do emergency work and it can truly cost a lot less. If they are associated with a hospital you might be able to get in through the ER if the pain comes back and is unbearable. Plus they may have a dentist on call in the ER and he can do some pain meds or some other temporary solution.
A regular ER won't usually see anyone with dental issues, they are not qualified to treat anything about them and they just say they are sorry but they can't see you. That's why an ER that is associated with a University Medical program that has a Dental school is the better choice.