Coriander seed? I'll avoid the temptation to bring up that whole British teeth thing. Get some clove oil works wonders till you get it fixed.
Were you chewing on a comfit or something? I had to look up what one was. Apparantely, they aren't popular here. I have a cavity that should have been filled over a year ago, it doesn't bother me and I am terrified of the dentist so I am going to let it rot. I had retainers, braces, wisdom teeth cut out, but two fillings last year was too much for me. I want sedated and they don't sedate for silly stuff like a filling.