Can you help me with some suggestions?

Yesterday I went to an Oral Surgeon. I was there due to pain from an extraction that was done three months ago by my dentist.
(I had already gone to my dentist for it and they were of no help)

They told me I had a bone chip that was trying to work it’s way out. He told me he needed to “clip it”. He didn’t ask if I wanted a shot or gas or anything. He didn’t tell me anything about the procedure. He just told me to open my mouth.

His assistant was down by my feet. The moment he touched the extraction site pain shot through me. I told him it hurt and to please stop. He kept going and I started crying. I was sobbing really. He and his assistant physically held me down and he kept going! Yes. held me down with force. I kept telling them to stop. They didn’t.
When he took the clipper tool out of my mouth I jumped out of the chair. I told him “you cant do this, you can’t hold me down like that. that is not right and it is not acceptable”. His assistant replied “i was just resting my hands on your arms”. That was total bullshit.
I grabbed my things and got the hell out of there.

Luckily my sister was able to get me an emergency appointment with her dentist right away to make sure all was okay. He wasn’t able to totally get all of the bone cut away. But she gave me some gel to put on it for a week and then come back next week.

It is very sore, but luckily not causing major pain.

I am livid about what they did to me. Is that even legal? Where can I report them to? I already have PTSD, this did not help at all. This is not right!