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RESTORA TION OF INCISORS.
8f

produces a strong leverage, which during mastication would operate
out of the Where the
to force the filling cavity. anchorage therefore
is it will be safer to adopt the second form, or as much of
slight,
an approximation to it as judgment shall direct, for the leverage is
almost annihilated by the curved line, while we still retain a sem-
blance of tooth-form. Where the tooth of the opposite side is so
markedly different as to make too decided a contrast, there might be
no harm in slightly altering it so as to produce harmony.
To come to the case from practice alluded to. The patient was
a married woman about twenty-five years of age, and decidedly
anemic. She was excessively nervous, and her teeth hypersensitive.
The history given to me was that the two teeth which she wished me
to fill had been filled seven times, each time with gold, and
already
all had failed. They were a central and a lateral incisor. The first
examination showed two of very poor shape
crumbling gold fillings,
and were
leaking badly. They readily tipped out with an excavator,
and the cavities were most uninviting. The central incisor seemed to
be the more difficult, and therefore was undertaken first. Fig. 68
FIG. 68. FIG. 69. FIG. 70. FIG. 71.

the condition of the tooth seen from the palatal aspect, where
gives
the loss of tissue was most apparent. After crowding the gum away
by packing cotton against it for several days, so that the dam could
be forced above the gingival border, I prepared the cavity as seen in
Fig. 69, making a slight groove immediately within the border at all
and extending one or two horns of the cavity upward, avoid-
points,
ing the pulp. As will be observed, this practically surrounded the pulp
with gold between which and it there was but little dentine. To make
I used the method the
all more sure, previously described, covering
cavity with oxyphosphate, before inserting the first pieces of gold. I
then filled the tooth so that it appeared as shown in Figs. 70 and 71,
the Observe that little
which give palatal and labial aspects. very gold
of view, and that though the anchorage
shows from the labial point
it was
here was very poor, probably sufficient, because the leverage
there being but little gold along the incisive edge. I
is very slight,
felt quite elated at my success in this most difficult case, and turned
to the lateral incisor with considerable assurance. Here I found so