Amann Girrbach Artex Facebow, User Manual

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F I T T I N G T H E F A C E B O W T O A D E N T A T E J A W
E N
5.5 Fitting the Facebow (arbitrary)
Patient in lying position. This counteracts the
weight of the facebow and lever effect of the front
section.
▷
Loosen the set screws [1] and insert the porus
buttons [6] into the patient’s auditory canals,
allo wing the patient to assist.
▷
Tighten set screws [1], loosen nasion set screw
[15] (1/4 turn), and gently press the nasion [16]
onto the glabella.
▪
The middle and index fingers are used to grasp
behind the nasion support while the thumb
exerts gentle, continual pressure on it.
▪
The other thumb is used to stretch the fore-
head skin to allow the nasion adapter [17] to
adapt to the bridge of the nose.
▷
When the red mark is covered by the outer tele-
scope, tighten the set screw [15] with your free
hand.
5.6 Registering the position of the
upper jaw with the universal joint
▷
Loosen toggle nut [23] to allow the universal
joint to move freely.
▷
While the patient presses the bite fork firmly on
to the molar region with cotton rolls on his/her
lower jaw or with his/her hand, the dental-care
provider inserts the fork mounting [21] (with the
collar screw and groove pointing upwards) into
the bikte fork handle and firmly tightens the col-
lar screw [22] fully.
The toggle nut should be positioned to the right
(or from the patien‘s view at left) to allow the
unhindered transfer into the transfer stand (fig-
ures H).
▷
Tighten toggle nut [23] fully by centralizing the
toggle and exerting uniform pressure on both
ends to prevent it from tipping.
▷
Once the position has been registered, loosen
nasi on set screw [15] immediately. Retract
nasion [16] and fix it in place with set screw [15],
holding the facebow to prevent it tipping.
▷
Loosen set screws [1] and open the facebow.
▷
Remove the facebow and registration down-
wards.
5.7 Adaption of the facebow to a tooth-
less jaw
▷
Select one of the following procedures:
▪
Use a custom tray with tray handle [25].
▪
Proceed as described for the
“
toothed jaw
”
, but
adapt the fork to the customized tray fur-
nished with 2 - 3 notches (see Centrofix
instructions).
The patient’s mouth must always be open
when the facebow is adapted, i.e. after fit-
ting the bite fork to the upper teeth.
The Leipzig nasion incorporates a tele-
scope with a spring that counterbalances
the weight of the facebow when the red
mark is covered by the outer telescope.
Thanks to the standardized, controllable
pressure, the position of the ear adapters
[6]/axis pin [10] in the arbitrary hinge axis
region is reproducible..
Only loosen the set screws [1] - do not
attempt to un- screw them fully. This also
applies to the clinched collar screw [22] on
the fork mounting, which might jam.
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