The knee-jerk, sue-first mentality would be to tell your parents, have them gripe to the school and school board, filing a complaint, getting your teacher pulled etc. and generally not being very civil leaving all parties on negative terms.
A more "adult" thing to do would be to talk to your teacher after class (ideally without other students around to allow the teacher to save face), politely explaining your viewpoint, and make it clear that you don't think it was right for her to grab your wrist, but don't see a reason to escalate the issue further it if she acknowledges it. With any luck, she'll realize that she was at risk, but will have a heightened respect for you approaching her. If instead she decides to be rude about it, then maybe you should consider talking to the administration.
If you do feel the need to talk to the administration over this, then begin documenting everything.
No matter which route your take, at all times maintain your composure, be clear, yet firm with what you want as a result, and don't raise your voice. Be respectful of their viewpoints and acknowledge that yes, you weren't a saint in the matter either, and all humans make mistakes.
It doesn't sound like anyone is permanently scarred from this for life yet (physically or mentally), and hopefully it'll stay that way.