my (tooth) crown broke?

Depends how it has broken and where, but only your dentist can tell you whether it can be repaired and refitted. It it is fairly new then there will be a years warranty on it as such.

Make an appointment as soon as you can as you do not want the remainder of the tooth and perhaps pin to be damaged while you wait any longer.

i might bypass lower back to the dentist who did the paintings. you do no longer decide on a receipt -- they shop information of the paintings that they did. i do no longer think of which you're interior of a 'guarantee' era yet, your dentist could replace the previous crown for you at a chit.

glue it back << omg noooooooo

go to the doctor and they will do a filling ...

let the doctor do it, or else don't do anything !!

I wouldn't advise gluing it back on...

Go see your dentist. :)