I got one a long time ago, to get the impression of my teeth, they put the goo into my mouth. It gets way back in your mouth and 1/2 way down your throat, thought I was going to puke all over him. Dr says WIGGLE YOU TOES, WIGGLE YOUR TOES, this way, you think of something else instead of throwing up on him. YEAH RIGHT...
Paid $425 for this thing, and could not get use to using it. It now sits in the draw.
FOR SALE: slightly used night guard mouth-piece, asking $0.01 with free shipping.