Can you have mri with temporary dental crown?

Definitely, yes: Dental caps, temporary crowns, pins, permanent wires, braces etc. can be scanned with no problem or restriction.

MRI: Yes as song as it is not a metal crown and most are not these days; check with your ME and your dentist to be sure.

Absolutely: Dental restorations and braces that are metallic are made with metals that are non-magnetic. It's perfectly safe. If you still are not sure, check with the MRI practitioner for reassurance.

Yes: Yes, you could unless your temporary crown is made of metal and you happened needing a Brain scan and the metal temporary crown is on its way to block image of the scan.

Yes: Should be no problem. Most temporary crowns are made of acrylic or resin -- no metal involved. However some Dentists use a metal band and build acrylic around it -- this could be a problem. Check with your Dentist to be sure. Good Luck.