I had a tempo crown done 3 weeks ago on 13 piece (root canal done 3 years ago). but i had moderate pain that comes and go in the teeth. is pain bad?

See your DDS: for evaluation and x-ray before the permanent crown is cemented.

Comfortable Temps: Good day; You need to speak with dentist who recently completed temporary crown. Share your concerns with him; I believe there is logical explanation for the discomfort.

Not normal: I presume that you are referencing tooth #13 an upper left bicuspid by international numbering. If you have waited 3 years to crown the tooth, you may have a cracked root. Have the dentist evaluate this possibility