Is it extremely difficult for others to brush their kids teeth or is it just us?

We have to wrap our 3 year old in a towel, force her mouth open, and brush her teeth for her. She fights us every single night. It takes 2 of us no matter what. She had her first dentist appointment which took 3 people to look at and then clean her teeth. We have tried all the songs, every toothbrush, and every toothpaste. Nothing works. We do let her try every night and she insists on just chewing on the brush. We know she knows how to scrub because we have seen her do it.

I am half venting and half asking for suggestions.