Amann Girrbach artex gesichtsbogen Modo De Empleo página 17

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
Fitting the Facebow (arbitrary)
The patient's mouth must always be open
when the facebow is adapted, i.e. after
fitting 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..
Patient in lying position. This counteracts the
weight of the facebow and lever effect of the
front section.
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.
▷ 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 tel-
escope, tighten the set screw [15] with your
free hand.
Registering the position of the upper jaw
E
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 collar 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 (figures 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.
F
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