Can I be a commercial pilot if I've had a dental filling?
Here are the mouth and throat requirements for a pilot physical.

The main thing is that it shouldn't affect your ability to fly (i.e. having pain) and ability to communicate over the radio.

Commercial pilots who don't fly regular schedules need a Class 2 medical certificate. Regular schedule commercial pilots need a Class 1.


FAA Class 2 medical requirements
FAA Class 1 medical requirements