Page 102 - My FlipBook

86 THE TREATMENT OF TEETH

partially condense it, there is usually no difficulty in
making the foundation, and the filling is then com-
pleted with pellets or tapes, the first one or more
of which are driven in and attached to the non-
cohesive hase as already described. To fill a star-
shaped cavity, consisting of a central hole, with
fissure-like extensions, wedge non-cohesive pellets
towards the ends of each arm, until the centre is
reached ; then wedge more pellets in the centre,
condense down sufficiently to admit of the attach-
ment of cohesive gold, and build up with pellets or
strips. If the extension arms and the centre are
too shallow to admit of this method of wedging
a foundation being satisfactorily carried out, drill a
starting pit at the end of each extension, and work
the gold from these pits carefully over the whole of
the floor, and up to the surface. Fissures must be
cut of sufficient depth, and properly squared out to
admit of the gold remaining firmly in place, without
any lifting of the edges by the force of mastication.
Filling Uypcr Incisors and Cuspids.—In working
from the lingual surface, place a pellet of non-
cohesive gold against the cervical wall, and press
it well into the angles or undercuts. If one suffi-
ciently large pellet will not stay in place, press a
pellet against the cervico-labial angle, another one
against the cervico-lingual angle, and then wedge a