23
A P P L I C A T I O N
E N
▷
To adjust the vertical distance: Directly in the
mouth, screw tracing ball in or out respectively.
The notch at the ball can be used to check the
position.
Fig. 14 Determining the vertical distance by reg-
ulating the screw
When the ideal distance has been determined:
▷
Remove the mandibular tray.
▷
Lock the tracing ball with the lock nut.
Registration of the arrow angle
▷
Fasten a round copper plate [10] on the tracing
tablet using a little adhesive varnish.
Fig. 15 Fastening the plate
▷
Insert the mandible and maxilla trays in the
patient's mouth.
▷
Have the patient perform protrusion and latero-
trusion jaw movements.
The tracing ball records the jaw movement on
the copper plate.
▷
Remove the mandible tray with the recording on
it.
▷
Insert alignment cross [8] into ball cup of align-
ment clamp [6].
▷
Align the alignment clamp on the tracing tablet
in such a manner that the alignment cross it is
congruent with the tip of the arrow angel
(Gothic arc).
Fig. 16 After arrow-angle registration
▷
Tighten alignment clamp with locking screw [7].
▷
Remove the alignment cross.
▷
Make sure that the ball cup of the alignment
clamp is completely opened.
▷
Insert the mandibular tray again.
▷
Have the patient occlude in centric relation.
The ball slides in the ball cup of the alignment
clamp.
10
8
6
7
