Hello sir/mam'
As per the x-ray provided here [RVG], there is a retained root piece distal to 47. Still need to be confirmed clinically.
Pain on lying down suggests pulpal pain.
As per your history and series of multiple treatments you underwent, I will advise you to get it checked.
Simple grinding of tooth to correct bite issues is not advisable as it may result in increased sensitivity and sometimes pain.
Bite issues can be corrected after detailed clinical examination.
T-scan is a digital modality available for pain associated with bite issues.
Losing a tooth is just like removing a book from the shelf when everything is packed. It cascades a series of changes from discomfort to pain in long-term.
So unknowingly, you start chewing from one side and completely ignoring the other side because of pain.
There are 4 muscles of mastication [chewing] on both sides, which support and conduct chewing.
Any discrepancy between the two sides in long-term results in bite issues.
Next Steps
First contact the dentist to get it thoroughly checked. When you get free from your current pain, plan replacement of missing tooth.
Health Tips
www.thecosmeticclinic.in