Page 160 - My FlipBook

;

156 FILLING TEETH.

for its position can not be changed, except at a sacri-
fice of the adaptation, after it is condensed. The end
of the roll being placed in the cavity, it is seized far
enough without the cavity to form a fold that will
extend to the bottom, and protrude about one line

beyond the border of the orifice. This fold is pressed
firmly upon the preceding portion of gold and adjacent

walls. Thus fold after fold is introduced, passed to
the bottom of the cavity, and, protruding from the
orifice, consolidated firmly, each portion as it is intro-
duced, being perfectly adapted to the walls of the
cavity and the preceding portion of the filling.
It is important to obtain as complete an adaptation
of the filling to the walls of the cavity as possible
and in order to accomplish this the center should not
be filled too rapidly. The gold is thus introduced

fold after fold till the cavity is full. When it is filled
to two-thirds of its diameter, the gold should then be
adjusted to all the remaining walls of the cavity, and
the last portions of gold introduced somewhere in
the body of the filling, certainly not next to any wall
of the cavity. A more thorough adaptation of the
gold can be made to the walls of the cavity, by this
manner of arranging it, than by introducing the last
portion at one side of the cavity. There is less lia-
bility of fracturing a frail tooth by placing the gold
on the walls first, and terminating the introduction