Car accident face dent. What type of procedure could treat this? (Photo)

I’m wondering what type of procedure (if any exist) I should be looking for to fix the dent in my face. It is from a car accident years ago and makes me very insecure. It is on my cheek. I don’t know what it is the result of, possibly my broken jaw, or something from the actual wreck. (I was comatose for a month, so I don’t know what the actual injury was). Any advice would be appreciated.