Mark II Instruction Manual - Whip Mix
Mark II Instruction Manual - Whip Mix
Mark II Instruction Manual - Whip Mix
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A. Facebow Transfer<br />
If the facebow/earbow is used as a<br />
face bow (the posterior reference points<br />
are oriented to the posterior reference<br />
points marked on the side of the patient’s<br />
face in the area of the terminal<br />
hinge axis) the facebow will be attached<br />
to the articulator by indexing the posterior<br />
reference pins into the facebow<br />
indexes on the lateral aspects of the<br />
condyles (fig. 50).<br />
A. Earbow Transfer<br />
If the facebow/earbow is used as an earbow<br />
the nylon earplugs are removed for<br />
attachment of the bow to the articulator<br />
and the posterior reference pins are<br />
indexed into the earbow index holes on<br />
the lateral aspects of the fossae (fig. 50).<br />
Attach the facebow (or earbow) assembly<br />
to the articulator by equally adjusting<br />
both posterior reference slides so that<br />
both scales give the same reading when<br />
the posterior reference pins are firmly<br />
seated in their respective condylar or<br />
earbow index holes. This can be done<br />
most conveniently by indexing both<br />
posterior reference pins in their respective<br />
holes. Observe the setting to which<br />
the slides are adjusted. The sum of<br />
these settings divided by 2 is the setting<br />
to which the posterior reference slides<br />
are adjusted for proper transfer of the<br />
facebow to the articulator. (For example,<br />
the sum of +30 and -10+=20 divided by<br />
2=+10.)<br />
If the facebow was oriented to the patient<br />
to posterior reference points located<br />
precisely with a hinge axis locator,<br />
marked readjustment of the posterior<br />
reference slides of the facebow to accommodate<br />
it to the articulator could introduce<br />
a slight mounting error. In order<br />
to minimize this error, mounting studs<br />
are inserted into the lateral aspects of<br />
the condylar elements to minimize the<br />
amount of adjustment of the posterior<br />
reference slides (fig. 51).<br />
Facebow<br />
Index<br />
Earbow<br />
Index<br />
fig. 50<br />
fig. 48 fig. 51<br />
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