Reasons to consider wether you should be opting for extraction are :-
-1-ur back teeth serve the purpose of chewing , so we usually opt for saving the third molar only if it can serve the purpose of chewing after treatment.
-2-it causes an interference in your normal teeth alignment leading to disturbance of ur joint (TMJ)
--3-it is mostly situated in a manner that it has a poor access resulting in compromised treatment by the doctor .
Plz consider the following reasons and acknowledge the fact that sometimes extraction can be a better choice than saving .
Still if u want to save it then get the reason for ur toothache diagnosed , if it's a decay you may then need a filling or a root canal treatment. If the reason is inflammation of ur gums u may then need scaling .
Next Steps
Consult ur doc for the right guidance