I'm baffled--can't figure out if I got injured working dish or have a tooth problem

[Steven Tyler]

From my personal experience, I've had a cracked root after a root canal. You can't save the tooth. It will have to be cut out. Amoxacillian is a good antibiotic, especially if you have an abscess. You may later mash around your gum where the infection is, and a ton of pus will come out.

A cracked root is usually caused by the way you bite. I don't think a shot to the mask would crack something, but I couldn't say for sure.

Good Luck. I hope you have some type of dental insurance, or deep pockets. Hope everything is okay though, and nothing major.