Bruxism splints are best purchased from the dentist. The consequences of poor fit are simply not worth it.

My dentist actually recommended I try a mouth piece like used for sports just to see if it helped with some intermittent grinding issues. My guess was try before getting the more expensive option.

I killed two birds with one stone. I bought the "PureSleep" anti-snoring device. It keeps me from grinding my teeth and stops my snoring. Win-Win.

Years ago I was having problems with TMJ and the dentist advised me to get one. He cast my teeth the same way as they do for a crown and charged me big bucks. It actually reminded me of the guard that football players wear. I wouldn't spend big bucks again.