After successful MVD in 2009 to clear original Type 2 TN pain the MVD created deafferentiation pain (aka, Anesthesia Dolorosa) in a totally new spot. My new pain is constant aching, burning of my left cheekbone, left corner of mouth, all left side upper and lower teeth and left side of tongue. I started Fentanyl patches and hydrocodone for this new pain in summer 2010. These opiates often prevent increase in this deafferentiation pain but don't reduce the constant pain. To the point, I tried acupuncture by two different practitioners and stopped because the acupuncture always boosts me into higher pain levels within an hour after the treatment with the needles. And, the deafferentiation pain was not reduced during the treatment even though I could tell the pain was beginning to modulate within minutes of needle insertion.
On the other hand, I tried accupuncture again because it was successful in reducing my TN Type 2 pain before the MVD surgery. It always comes down to the condition of the individual's nerves. Wish I had better news. Maybe, acupuncture will work for you. Out here in CA there are many acupuncturists advertising treatment for TN with both classic and electro-acupuncture and the cost is usually under $100 for a treatment to find out without a doctor referral. I found many on the internet using "trigeminal neuralgia + acupuncture". Hope it works for you if you decide to try it!