Q. Hi, my question relates to crowns. I have a very large filling in one of my upper rear teeth (second from the back) my dentist thought the cavity was really a bit large to be filling but i didn’t want to lose the tooth so it was filled. I’ve been very careful with it and its lasted about 8 months but part of the tooth has now broken off, i assume this will only get worse and so my question is can the filling be ground down allong with the remaining tooth to support a crown, or does the filling have to be removed and the crown bonded just to the tooth as i don’t think there will be enough material to bond to if the filling is removed. thanks.