Please tell me, could a temporary crown have a infection?

Temporary crown: If you are asking whether a tooth with a temporary crown can be infected, the answer is yes. If you are having discomfort, contact your dentist. A temporary crown is only meant to be worn for a short time until a permanent crown is placed.

Yes: The infection will not be due to the temporary crown but more from the tooth itself that might be infected.

The tooth or: Gum itself could be infected. Best to return to the treating dentist to make sure. Hope this helps.