Hi Kev & Cutiepie,
I wear a gum shield at night time as apparently i brux! For me this involves my top & bottom jaw locking together and putting pressure on teeth (not grinding) I was given this years ago after going to dentist in excruciating pain, apparently nothing wrong but he noticed a bit of wear & tear to my fillings, pain continued up into my jaw line for next two weeks and was painfull and achey. Have to say, i think this has saved me from many a several anxiety filled nights! i can tell this as in the morning the shield feels stuck! lol A right old passion killer even!