67 yo male, placement of #19 crown, how common is it to file upper teeth to adjust the bite? i now have discomfort in the uppers i did not have before

Speak with dentist: Normally the crown is adjusted and reglazed if needed prior tp cementation. If there is inadequate room, a occusal adjustment may be needed, this is usually very minor and the opposing tooth is polished after the adjustment. If the area is problematic, see the dentist.

Depends: Depending on the dental anatomy of the opposing tooth and the crown, the best strategy to optimize your occlusion can vary. If I adjust anything other than the newly placed crown, I explain why to the patient so they understand. Your upper jaw pain may be caused by something independent of the adjustment. Go back to your dentist and voice your concerns.

Very common: when a new crown was placed it was very important that your bite be checked so that there be no premature contact when you close and when you move your jaw sideways as well If you have discomfort return to your dentist to eliminate the problem