What can cause discomfort or dull pain in tooth next to wisdom tooth extraction site? less than a week after extraction

Not unusual: Can be there was slight movement of the 12 yr molar when wisdom tooth removed. Could also be the healing going on in the bone/gums where the wisdom tooth used to be. If you're concerned call the dentist or oral surgeon that did the extraction and ask if an examination is in order.

Pain in tooth: Give it some time. Removing a tooth can cause discomfort to adjacent teeth -sometimes they stabilize the instruments used to loosen the tooth. A dry socket may be occurring also which can cause discomfort in the whole area-it generally occurs 2-3 days after the extraction-check with your surgeon i.

Normal: Minor pain/discomfort is normal less than a week after wisdom tooth extraction. If pain worsens, or is prolonged, that is not normal. In that case, return to the surgeon for evaluation/treatment.