Day five for me -- took my first evening pill last night -- and had extremely VIVID dreams last night. Thank goodness they were really, really good dreams I actually overslept because I just turned off the alarm to return to the dreaming.
Can't help with the sensitive teeth. Mine are really sensitive, anyway. Maybe you could try Sensodyne toothpaste while you're taking the med? It's helped me a good bit over the years.
Best of luck to you in beating this nasty, nasty habit and addiction