In uk.d-i-y, Huge wrote:
On 2006-08-11, Andy Hall wrote:
I
would be asking the dentist why the crown isn't bonding properly.

They do fall off every couple of years, especially if a back tooth
that you chew on. No adhesive can stand the environment forever.

I have some crowns (two of which are at the back) that have never fallen
off. They've been there for over 30 years.

--
Mike Barnes