Loss of taste after my temporary crown put in. What's the cause and how long it takes to get my sense of taste back?

 This could be a few things. Likely it is gingival inflammation from the old crown. Removing and redoing it would eliminate this issue. Another possibility is the root canal is reinfected. At any rate, make sure you discuss this with your dentist more so the problem can be properly...

Hello, Would be good you go to your doctor and have an evaluation about it, because if is hurting you possible you need to do a root canal. Regards!  

Hi:Most likely the crowns have to be adjusted.  It is important when checking bite issues the crowns are also checked in multiple movements (side to side and forward) while the teeth are touching.Best,Dr. Maddahi