I am having PRF injections (similar to PRP) from my TMJ dental specialist. Round 3 is next week. So far, no demonstrative change. I hear it takes awhile for tissue to regenerate. Worth trying. I'm at later stage in disease process, so it's a 50/50 chance that it will work for me. You need a professional to inject. Your blood is drawn, spun and reinjected into the jaw joint. Minimal discomfort.