Zirconia crown turned gray after the final glue, what could be the reason?

Yes, your teeth will naturally erupt in this case. You have a tremendous amount of nerves in your mouth and can feel the smallest difference, this is normal. If your chewing teeth start to hurt before the molars naturally erupt, then you should return to your dentist to have the filling adjusted.

I would go see a general dentist that can completely remove the crown and put you in a temporary to see if that will solve the problem. If it does, then go ahead and get a new crown made. I prosthodontist can help with this but so can a general dentist. I wouldn't jump to a root canal if the...

The gold standard for root canals (especially on posterior teeth) is to do a full coverage crown. I would not let my patient get an onlay or filling after a root canal unless there were some extenuating circumstances. It is hard to make a final judgment without seeing an X-ray and the inside of...