I went for my usual check up today, and to my horror the dentist said id lost half a tooth!, he took a picture and showed me the still and basically i have a filling in one of my top back molars and one side of the tooth has cracked, dropped off and the filling is exposed. the dentist said id lost most of the tooth and had to be careful that the filling didnt come out, he said the filling was already crumbling and hed have to refill it and seal round, trouble is, he cant do it for 4 months and when i asked about possible dangers with the filling, he just gave me a leaflet, but im very worried about possible effects from having the filling exposed, im also worried it will just drop out, or i might swallow it!