Page 29 - Directions for the manipulation of the Gysi adaptable articulator

25 poured on the upper model and upper model bow in the usual manner. The curve in the Incisor Guide Pin passes around the ends of the Horseshoe Plate. When the upper model is firmly attached, the string which bound the models together is cut and the upper trial plate is separated from the lower, with its attached Horseshoe Plate. The set screws of the Rotation Points are loosened, and the Rotation Points are pushed tow^ard the median line. The registering point in The In- RACK AND PINION FOR LATERAL ADJUSTMENT OF PENCILS 111. No. 26. Mounting the trial plates and models by means of The Condyle Path Register, and the bent Incisor Guide Pin. cisor Path Register is released and allowed to come again upon the Horseshoe Plate. The upper model bow is now moved laterally and it is noted how closely the registering point follows the pattern traced in the wax on the Horseshoe Plate. If it does not follow, the Rotation Point which is acting as a centre for that movement is moved outward until the registering point follows closely the outline of the pattern in the wax. It is locked in that position. The upper model bow is then moved to the other side and the other Rotation Point adjusted in the same way.