Page 103 - My FlipBook

FILLING TEETH 8;

third one between these two, and press the whole
mass of gold up to the cervical wall. Force a fine-
pointed plugger into the gold at one angle of the
cervical wall, and fill in with small pieces of cohesive
gold. Pack the non- cohesive gold well into the angle
or undercut, and add cohesive gold while doing so.
Treat the other angle in the same way. This locks
the non- cohesive gold firmly in place, and provides
a ready and firm attachment for more cohesive gold,
which can then be easily extended from one angle
to the other, driving the non-cohesive base into
close contact with the wall as the condensation of
the cohesive layer is carried out. In order to drive
the gold accurately into sharp or well-defined angles,
a very fine-pointed plugger or, better still, one with
a flattened almost knife-like edge, with fine single
serrations cut on the edge, is needed. The manner
in which a cavity is prepared, and the sharpness of
the angles will determine the kind of plugger to be
used at these parts. If a starting pit is used, it
should be drilled at the cervico - labial angle, and
carefully filled with cohesive gold ; the foundation
is then made by carefully working the gold across
the cervical wall from the starting pit, until it
reaches, and can be packed into, the cervico-lingual
angle or undercut. In making a starting pit, it
should only be deep enough to readily and securely