Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that there is re-infection in the tooth or lingering infection since the treatment was done..
The other thing is that
pain in teeth surrounding the area can be
radiating pain from the infected tooth or can also be due to
sinus infection..
Sinus infection can also occur secondary to the tooth infectionof upper teeth as the roots of upper back teeth lies in close proximity with the sinus floor and at times lies into the sinus..
I would suggest you to consult an Endodontist and get evaluated as well as consult an
ENT specialist and he can advise you PNS View or MRI of sinuses to rule out the exact cause of problem and treat accordingly..
As of now you can take painkillers like Ibuprofen or Tramadol for pain..
In case if tooth is found infected, re-
root canal or extraction can help..
Infection in the sinuses can be treated with antibiotics, anti-inflammatory painkiller, steam inhalations and steroid nasal sprays..
Decongestants and steroid nasal sprays can also be advised..
Hope this information helps..
Thanks and regards,
Honey Nandwani Arora.