Page 31 - Directions for the manipulation of the Gysi adaptable articulator

27 Succession Of Steps I. Takix(; Bite. 1. ]\rake trial plates. Base plates, wired, are shown in illustra- tion No. I. 2. Draw cheek line. 111. Xo. 2. 3. Warm right hand ridge of upper trial plate. 4. Press right hand ridge of upper trial plate with table knife parallel with the cheek line, until it is 1 X> m.m. below bor- der of upper lip. 111. Nos. 3 and 4. 5. Cut left side of upper trial plate outside the mouth to agree with right side. 6. Model fullness of lips and facial expression by adding or cutting away wax. 111. Xo. 7. 7. Make upper w^ax border parallel with pupil lines. 8. Warm w^ax border of lower trial plate. 111. X"o. 5. 9. Have patient bite trial plates together in the mouth until lips touch lightly. 10. Make sure that upper and low^er trial plates sit snugly on the alveolar ridges. 11. Smooth off protruding wax borders (outside the mouth). 12. Cut median line of face in the w^ax of trial plates, also the smiling line (length of incisors) and corners of orifice of mouth. 13. Attach Horseshoe Plate to lower plate outside the mouth III. No. 8. 14. Warm upper wax border and have patient bite, in the mouth, on Horseshoe Plate and then level off festoons with knife. See right hand half, III. No. 8. II. Recording Movements of Mandible. 1. Again put upper and lower trial plates into the mouth and at- tach large register to the horseshoe pattern. 111. Xo. 10. 2. Place ends of vertical pencils opposite marks over heads of condyles. 111. Xo. 10. Record lateral movements of man- dible upon ground glass holder. 111. Xo. 12.