For those who clench, always or sometimes, do you clench tight and keep the button and mouthpiece straight or at a right angle, or do you hook the button on your teeth and let it dangle?
Do stem materials, shape, size and weight determine clenchability?
Or do you refrain from clenching altogether?
Do stem materials, shape, size and weight determine clenchability?
Or do you refrain from clenching altogether?