Hi..
Can understand your concern..
As per your query it seems that you have a post operative infection leading to pain and swelling otherwise the pain and swelling mostly goes away in a weeks time and at times even in less time..
It is possible that there may be some food debris got inside the extraction socket and your gargles with
mouth rinses are not able to remove it and it is creating a constant source of infection and until it is not removed the infection and pain does not go away..
Other thing is that there is a nerve in very close location of the roots of lower wisdom teeth known as
INFERIOR ALVEOLAR NERVE or INFERIOR DENTAL NERVE and many a times during extraction of wisdom tooth this nerve gets damaged leading to
numbness.
This damage may be reversible or irreversible.
I would suggest you to consult an ORAL and MAXILLOFACIAL SURGEON as he is the best dental specialist who can do a thorough clinical evaluation and find out the exact cause of pain and swelling and do the treatment needed.
Since it is already 4 weeks you should consult soon as persistent infections can lead to
cellulitis and further complicate the condition..
"SO PREVENTION IS BETTER THAN CURE"
HOPE YOUR QUERY IS SOLVED..
Thanks and regards..
Dr,Honey Nandwani Arora..