Page 111 - My FlipBook

FILLING TEETH —
95
bicuspids renders the exact restoration of contour
difficult and uncertain. In some cases the space
secured leads to too great cutting away of the gold,
and the all-unsuspected leaving of a permanent space
between the teeth. On the other hand, a plus
contour may be left Avhich is not only undesirable,
but may cause pain through the production of
lateral pressure. The following procedure has
therefore been adopted with satisfactory results :
As soon as the cervical margin is well covered
with gold, a thin flat burnisher is used to press
the overlap on to the root, slightly beyond the
margin, and the gold is firmly burnished at this
part. The next layers are condensed well on to
this gold margin and rubbed over it, and also over
the lateral walls. By proceeding in this manner,
and carefully and thoroughly rubbing the overlap
down on to the exterior surface of the already con-
densed gold, and over the margin, it is found that
the filling gradually swells out to exact contour
with little or no surplus to be afterwards removed.
As soon as the knuckle is reached, or nearly reached,
the gold is well up against the next tooth, and it
takes a little force to press the burnisher between
the filling and the adjacent tooth in order to wrap
down the gold. In a little time, notwithstanding
that the burnisher has forced the teeth somewhat