My family has been taking Magnesium since I read from Magnesium Miracle book that most of us are magnesium deficient.. After weeks of using Chelated Mg Glycinate 400 mg, plus Magnesium Oil-- 8 Sprays to each leg at night-- my husband started sleeping better, uninterrupted. I noticed that he did not grind his teeth anymore. He also stopped snoring. I just hear a soft hiss as he sleeps. I googled Magnesium and snoring: An article by Dr. Carolyn Dean states that Mg deficiency causes SNORING and SLEEP APNEA - where Mg should be the first choice of treatment before resorting to the common treatments such as surgeries or CPAP. Her suggested dose: Magnesium Citrate powder 300mg twice a day. We used the Chelated Mg and it worked as well. We also use Magnesium Chloride spray as it works faster, per Dr Sircus "Transdermal Magnesium" book.. Hope it helps.
After years dealing with teeth grinding, clenching, TMJ, and a variety of dental night guards, I started taking magnesium suppliments and the effect was immediate. Most of the bruxism literature that I've read labels stress as its major cause. I'm sure that's true for some people, but I also knew that it didn't fully explain mine. Discovering such a simple solution to such a long term problem was an epiphany.
Tooth grinding is symptomatic of a Magnesium Deficiency. Try a Magnesium Citrate drink before bed.