My husband has continuous pain tightness in gum after wisdom tooth extraction. He has been to a dentist, periodontal, orthodontist, neurologist, oral surgeon and an ear, nose and throat specialist. He has been given Gabapenrin, Compamazapine, Prednisone and Cortisone injection...nothing seems to work. This has been ongoing for 7 months. Nothing seems to help. He has been told it is Trigeminal Neuralgia, chronic Sinusitis, etc. But still, no relief. Can you help?