Hello, I tell my patients that if you can keep your wisdom teeth clean and if they function as a pair, they should not be extracted. You describe an area that is constantly difficult to clean and now is infected. Continue to clean the area and rinse vigorously with warm salt water. Remove any debris from around the tooth. Interdental cleaners and a water pic may be helpful to flush the area successfully. It will not feel better immediately. Use a chlorhexdine glucnate or a betadine rinse if available. Take anti-infammatory medication such as Motrin or Tylenol. If swelling increases, you will need to have your dentist curettage the area under local anesthesic and take a prescribed antibiotic. This may reoccur and become a chronic condition best treated with an extraction. If the tissue does not improve, your dentist may need to prescribe medication and determine if the condition is due to a fungal, baccterial or viral condition. Did you bite the gum area while numb after the filling was completed? Is any of the filling missing? Deep fillings can be sensitive or need evaluation for an abscess by your dentist. I recommend a return visit to check for these conditions. Thank you for your inquiry. I hope that you feel better soon