Page 115 - My FlipBook

CAVITY PREPARATION FOR GOLD INLAYS 111
covered should be generous. If only one tooth is to be treated
with this filling the amount of tooth substance cut away will be
about the same as the quantity of gold in the inlay.
However if the bite is to be raised on most or all teeth the cut-
ting should be very slight and only enough to properly cleave
and bevel the enamel margins.
In vital cases either incisal, lingual or occlusal, the retention
should be made by the introduction of short pins, iridio-platinum
or tungsten preferred, through a matrix of pure gold, and then
casting the contour.
In Non-Vital Cases a single large pin should be used, or the
model may be so made as to occupy a part of the pulp chamber
in lien of the pin.

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