Free associating just means writing down whatever pops into your head, no matter how banal or simple or gross or far out that it might seem. This tooth dream is trying to tell you something, so it would be a good one to figure out. Esp since it started after your last relationship but hasn't ended with you in this new one. I'll be interested to hear if you still have the dream after you get hitched. I don't think it's about teeth.....completely. Maybe partly. The unconscious mind is very sneaky and tries to say things in dreams, but it speaks a language of symbols. Meanwhile, get you to a dentist for a cleaning and checkup! That might help. I had this dream about my truck and had a hard time getting snow tires for it, but I haven't dreamt that one again since I got new tires....