HIII.....you are having such a symptoms in your teeth after placement of zirconium crown because there may be a high point in the new crown ..what ever the clinic is zirconium will have minimum 5 years warranty..so instead of grinding you can just go and replace your crown with new one till you are satisfied...
Next Steps
you can just go to the clinic in which you have undergone treatment and ask them for new crown and not grinding because grinding will lead to rough surface of crown .
Health Tips
the main advantage of placing zirconium crowns is they have warranty ..so you can just undergo new crown treatment