Page 14 - Directions for the manipulation of the Gysi adaptable articulator

lU (Fiiiiii Till- Mechanical Side of Aiiatoiiiical Artii-ulaticii. ) 111. No. 7. Patient with trial plates in position. The labial ends of the alae and septum are pushed up to place, vivifying the expression. The lips are built out in harmony with the general facial contour. Note the animated and vigorous expression. Mounting The Horseshoe Plate The trial plates are removed from the mouth and the Horse- shoe Plate mounted on the occlusal surface of the lower, with the two rods projecting directly forward, one on either side of the median line. The lower trial plate, with the Horseshoe Plate in position, is replaced in the mouth, the surface of the upper trial plate is softened by warming, it is quickly placed in the mouth and the jaws pressed together enough to shorten the upper trial plate a distance equal to the thickness of the Horseshoe Plate. Care should be taken to see that the pressure of the Horseshoe Plate is equal throughout the area of both sides of the wax ridge of the up-