I had a impacted wisdom tooth taken out 4 months ago and i am still in pain some days more than others i have been back to the dentist a few times?

Proabably unrelated: After 4 months the extraction site should be entirely healed. A possible exception would be a piece of jaw bone working it's way out of the jaw. This would present as a sore on your gum that is hard and possibly movable like pebble lodged in the gums. If your dentist has not had the chance to recheck go back. If they can't find anything ask for a referral to an oral surgeon. Best wishes.

Wisdom Tooth : If the extraction was done by a general dentist i would go to an oral surgeon for a second opinion. If it was done by an oral surgeon and you;re not getting a satisfied answer i would go to another oral surgeon for an evaluation. A dry socket is possible and could be treated.

Possible TMJ pain: Talk to your dentist or oral surgeon about possible TMJ pain. A second opinion may help you if you are not finding answers from your dentist.

Decay on nearby 2th?: Tmj? But more likely 1. Dry socket (yes at 4 months). 2. Retain roots 3. Decay on nearby tooth 4. Nerve damage from extraction. 5. Generalized periodontal disease. 6. Aggressive toothbrushing abrasion/mutilation creating sensitive roots. Try flossing twice daily (skipping one day is like not flossing at all) also use a vibratory brush technique at gums with sensodyne (no up-down no circles).