Botox for Teeth Grinding / Migraines

My dentist has been trying to push a $700 mouthguard on me for a long time, telling me that I must grind my teeth in my sleep - and that my headache / neck-aches are a direct result. After researching quite a bit, I decided to try Botox, injected into my jaw muscles. I've now gotten 3 treatments, spaced out over almost a year, and I don't wake up with any neck or headaches anymore. I was pretty skeptical, but I will tell anybody who will listen to give it a try if they are night time teeth grinders. It's been nothing short of amazing for me.