I had large filling done over 3 weeks ago. Tooth is still sensative to chew and flossing is painful (gums ok). Dentist checked bite - it's fine. X-rays did not show problem. He scraped off excess filling which reduced flossing pain. under gums and removed some excess filling. But I still can't chew and now I feel some pain even when i am not using that tooth. Crown? Root canal? New dentist?