As per this iopa
Short term treatment-maintain oral hygiene , dont let the food get stuck behind your this teeth, make sure to rinse thoroughly after having meals , followed by warm saline rinses 3-4 times a day.
If this can work then its thumbs up for you
But if its painful then u need to visit the dentist for complete removal of this tooth for permanent resolution to this problem
Next Steps
Do the upper short course for around 10days i believe it can resolve this problem.
Health Tips
just maintain oral hygiene , brush thorougly especially in the molar region, use mouthwash,as well as warm saline gargle , and dont let the food stuck in or around the tooth