Home cure that worked in 3 days for agonising TN: footballers mouthguard soaked in warm water and fitted to teeth, side of jaw where pain is. Stick soft velcro in mouthguard where it will touch the gums. Mix raw hot chopped chili with capsaicin cream and soak velcro with it (do not put fingers near eyes). Apply mouthguard so cream & chili touch gums, for five minutes three times a day for a week. The hot chili shrinks the damaged nerves. So far 18 months pain free.