Night Guard for TMJ and Pain Reduction?

My dentist, who is extremely knowledgeable about TN, recommends a night guard for my TMJ disorder. He says that his TN patients who use a night guard report 80% less pain. I’m curious – does anyone here use a night guard and get pain relief? Also, getting fitted for the night guard scares me. Does anyone have any experience with getting fitted, and does the pulling and tugging trigger an attack?

I wear a night guard but it has nothing to do with my pain. I wear it as a preventive measure to keep my teeth healthy and lessen the effects of grinding/clenching.

Getting fitted for the guard is no big deal and only took a few minutes, though I am not TN type 1 (classic TN), and I don't have triggers.