Abstract: A mouth block formed of either cotton, plastic or rubber which is to be placed between the teeth of a mandible and the teeth of a maxilla of a jaw to prevent chewing action. The mouth block has a tapered configuration with the widest part of the taper to be located near the front teeth and the narrowest part of the taper to be located directly adjacent the back teeth. The mouth block my include an attachment that facilitates the connection to a lanyard or a rod for the purpose of removing of the block when such is desired.