Hello
It mostly looks like the wisdom tooth and yes wisdom tooth sometimes does not come completely into the mouth and it is half inside the bone and half outside leading to much problems like cheek biting, cavity formation, sensitivity, food lodgement and that area is also not accessible for cleaning through brushing and rinsing. So when the problem starts disturbing your normal day-to-day activity it is always better to get the wisdom tooth removed.
Wisdom tooth extraction is a very normal and minor dental procedure that does not involve much of a discomfort. I would suggest you to visit an oral and maxillofacial surgeon ( wisdom tooth extraction specialist) and get the tooth removed before it damages the adjacent tooth.
Next Steps
You can get in touch with me. I am an oral and maxillofacial surgeon practicing in Dwarka New Delhi
Health Tips
Don't delay or rely on medicines. You will end up losing more teeth.