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Mark II Instruction Manual - Whip Mix

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fig. 65<br />

fig. 67<br />

With the right index finger, push the foot<br />

of the incisal pin back until it just contacts<br />

the inclined platform of the incisal<br />

table, and tighten the incisal pin foot<br />

lockscrew in that position (fig. 67). By<br />

allowing the incisal pin to come forward<br />

into the centric related position again,<br />

a space will be noticeable between the<br />

foot of the pin and the incisal table – this<br />

space is equal to the horizontal overlap<br />

of the anterior teeth. (fig. 68).<br />

Protrusive Adjustment<br />

To adjust the incisal table for the inclination<br />

of the lingual bearing surfaces of<br />

the anterior teeth, first loosen the incisal<br />

platform and set it back to zero. Do not<br />

tighten the lockscrew. Then, move the<br />

upper bow posteriorly until the incisal<br />

edges of the lower anterior teeth contact<br />

the lingual surface of the upper anterior<br />

teeth just lingual to their incisal edges.<br />

Note that the incisal pin does not touch<br />

the incisal table now (fig. 69). Increase<br />

the angle of the table until it touches the<br />

foot and lock the table in that position<br />

(fig. 70).<br />

Lateral Wing Adjustment<br />

The lateral wings of the incisal table are<br />

adjusted to complement the lateral relationships<br />

of the anterior teeth – most<br />

frequently the vertical and horizontal<br />

overlap relationships of the cuspid<br />

teeth. To make this adjustment, first<br />

remove the incisal table and loosen the<br />

lateral wing lockscrews (fig. 71). Then replace<br />

the incisal table on the articulator<br />

to observe visually the angle to which<br />

the lateral wings must be adjusted to<br />

complement the anterior tooth relationships<br />

in the following manner. Hold the<br />

fig. 66 fig. 68<br />

33

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