Anyone had a crown fitted recently? A post crown if it makes a difference? How long did the dentist let the cement set before removing the excess?
I've had one come off, and went to my (new) NHS dentist to have it fixed and he started fiddling with it near immediately while the cement was still soft. And it fell out the same day. Tried again - same result. When it was fitted (private) the dentist waited a full five minutes before attempting to remove the excess. But that was a few years ago - I wondered if the cement setting times had improved since then. The new NHS dentist does everything at 100 mph - presumably to make a bigger profit.