i went to the dentist today and they forgot to put the cement that goes on my crown what do i do? I came home and usually when i go they put cement to hold onto my tooth for 2 weeks.(btw i live an hour away from the dentist and i went because my tooth felt sensitive.) The dentist isnt opened sunday. is it bad if it's loose? My tooth is kinda holding it but not as tight as it should be please help.