washer 74 thereon engages upper internal threads 76 to lock the upper frame member 44 in place on the posts 34 in a closed position free from all torque twisting and bending fig7 illustrates a modification of post 34 wherein coil spring 80 surrounds the lower part of post 34 and is kept in place by set screw 82 spring 80 pushes upward against sleeve 84 which surrounds the upper part of post 34 to elevate upper frame member 44 above posts 34 when the bolts 72 are not threadably engaged therein cover 86 surrounds spring 80 and sleeve 84 and has a suitable opening 88 for set screw 82 the present novel method of forming the tooth positioner 10 with the correlator 30 involves the initial step of preparing proper set up models mounted to an articular an item of dental equipment employed to simulate mandible movements the operation of which is well known in the art the articulator incisal guide pin is raised to the minimum opening necessary to allow for the thickness of the positioning material interocclusally taking into consideration the necessity of providing air ducts for mouth breathing patients it is extremely important that the tooth positioner be constructed at the terminal hinge of the patient if the amount of positioner material between the occlusal surfaces.