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

I would suggest an appointment with your provider- it is possible that the bite on those 2 teeth may need a little adjustment.  If the bite is not quite right, i can cause discomfort, and the extra pressure on the teeth, any actually make them feel a little loose. 

Yes, these anatomical grooves are completely normal. It does not only provide a natural look, but these grooves actually aid in chewing and breaking down food to make it easier to digest and swallow. Hope this was helpful to you. 

Thank you for inquiring, Is up to a certain point normal that when a crown, regardless of the material is newly placed or cemented you go back home and you might feel it a bit higher than the rest of your teeth, the main reason is that when we adjust it we use a marking paper and ask you, as...