Can I remove my zirconia crowns? (Photo)

You likely will need to have them replaced. You will not be able to take them off without damaging them.  Good luck. 

Hi:It is very rare to be able to remove crowns that have been cemented with permenant cement.  It might be best to get them redone rather than risk harming the tooth.Best,Dr. Maddahi

In a quick response, yes, those crowns can be removed.  But they have to be cut off once they are permanently placed.  If the bite against your lower teeth is the issue, you should go back to the dentist to adjust the bite.  If you are concerned with a space forming at the gum area, and they were just placed within about a week.  I would give it a few more weeks to see if the gums fill in.  If they do not, then your only option is to remove them and place new crowns on.