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CUSTOM INCISAL TABLE
There are two different custom incisal
tables that fit Dénar
®
Articulators. They
are shown in fig 63. Part No. D41 is used
with articulators with the long centric
adjustment on the foot of the incisal pin.
Part No. D4 1 AB is used with articula-
tors having the rounded foot on the
incisal pin.
To use either of the custom incisal
tables first attach a small mount of cold
cure acrylic to the posterior portion of
the incisal table. Part No. D41 has a
machined precision stop on its anterior
portion to maintain the correct vertical
dimension and care should be taken to
ensure that no acrylic is positioned on
the top of the stop. Also the long centric
adjustment at the foot of that incisal pin
should be turned so that the rounded
end will more efficiently mold the acrylic.
This is done by adjusting the foot so that
its anterior extremity is flush with the
anterior surface of its dovetail support.
When the acrylic has reached a rather
firm consistency, the articulator is
moved in right lateral, left lateral, and
protrusive excursions allowing the ante-
rior teeth which are kept in contact to
guide these excursive movements
thereby functionally generating a cus-
tom incisal guide. This recording is
transferred to the incisal table and small
fleur-de-lis is generated in the cold cure
acrylic (fig. 64). This is later perfected
with a vulcanite burr.
The custom incisal table can be used to
best advantage in adjusting to the verti-
cal and horizontal overlap relation of the
anterior teeth.This is particularly true in
adjusting the incisal guidance of the
articulator to natural teeth which exhibit
varying amounts of horizontal overlap of
the teeth which bear the horizontal load
in the protrusive, right lateral, and left
lateral excursive movements.
ADJUSTABLE INCISAL TABLE
Long Centric Adjustment.
The Long Centric Adjustment is located
on the foot of the incisal pin. When there
is a horizontal overlap of the anterior
teeth, or a “long centric”, the foot of the
incisal pin is adjusted to complement
this tooth relationship in the following
manner. Set the protrusive inclination of
the incisal table to its maximum angle.
Loosen the foot of the incisal pin and
slide it forward (fig. 65). Move the upper
bow posteriorly until the lower anterior
teeth contact the lingual surface of the
upper anterior teeth (fig. 66).
VIII. INCISAL TABLE ADJUSTMENTS
fig. 64
fig. 63
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