INSTRUCTIONS FOR ASSEMBLY, CENTRIC ADJUSTMENT, AND USE

The "NK" articulator (#47520) is a semi-adjustable, non-arcon articulator with a 0º to 25º adjustment
setting for Bennett Angle, and a fixed condylar inclination of 35º with a 19mm curvature radius.

ASSEMBLY AND CENTRIC ADJUSTMENT

Remove the two screws from end of the lower arm of the articulator, and set them aside. Insert
the prongs of the lower arm into the predrilled holes found on the bar between the upright arms of
the articulator (with the lower arm facing you, make sure the numbers designating Bennett angle
are also facing you). Insert the screws from the back, and tighten them with the larger of the
supplied allen wrenches. Alternate between the two screws when tightening them. The lower arm
of the articulator must be flush with the center bar, and tightening the screws will help achieve
this.

Slide the incisal guidance pin into the slot on the upper arm of the articulator, with the number
designations towards the front, and tighten the large white screw to hold it in place. Make sure the
pin is set at zero.

Remove the two plugs from the top arm of the articulator, to uncover the underlying axle set-screws.

Using the smaller of the two supplied allen wrenches, loosen both axle set- screws.

Lift up the plastic clips on either side of the articulator.

Attach the upper arm of the articulator by making sure the condyle balls rest in the center of each
condyle housing. You may have to pull on the ends of the axle to have the condyles match the
housing locations.

Slide the small inclined incisal table onto the flat table at the front of the lower arm. Make sure
the incisal pin is in its centric position (represented by a small u-shaped cut-out on the incisal
table). You may have to loosen the large white screw holding the pin, to move the pin backward
or forward slightly.

Maintain the upper arm in this centric position, and pull the right side of the condyle axle
completely to the right as far as it will go, making sure that the condyle ball rests properly in the
housing. Tighten the right axle set-screw. Repeat this procedure for the left side. Close the plastic
clips to ensure each condyle is in its center of rotation.

Place your hand on the upper arm of the articulator, and hold the bottom of the articulator with
your other hand. Try to move the upper arm back and forth to ensure that there is no "play" or
movement. If the arm is not tight, loosen the axle set-screws again, and repeat step 6.
10. If an average value setting is desired, set the Bennett angle at 15º.

INSTRUCTIONS FOR USE

You will need to mount magnetic SPLITEX ® plates (46100) onto the articulator prior to using the unit for
the first time (see separate instructions). Axis-related models can then be mounted to the articulator by
using a "buffer" plate in-between the magnetic plate and the quick-setting plaster that will hold each
model.

Accomplishing settings and movements:

Lateral movement for replication of excursions can be achieved by using your thumb to lift up
the plastic clip (found on the left or the right of the upper arm of the articulator) which holds the
condyle ball in its center of rotation. Open up the left clip to allow for lateral movement of the left
condyle along its condylar pathway, or the right clip to allow lateral movement to the right. Both
clips can be opened to allow for protrusive movement.

Pressing the clips down allows the plastic tongue to center the condyle ball(s) in the lowest
position of the condyle path. Only opening and closing movement is now possible.
Bennett angle setting adjustments can be made by loosening the screw-head on either arm. Then
line up the vertical mark for the appropriate angle-setting (determined by lateral check-bites
provided by the dentist, or by using average values) with the vertical reference line, and relock
the screw-head.

Revision 1