Page 364 - My FlipBook

360 EXTRACTION OF TEETH.

of the following methods may be adopted : the gum

may be dissected from the alveolus, and the latter
cut away with the thick cutting instrument, so as to
expose the root sufficiently for extraction with the
or, after the gum is dissected up, the
root forceps ;
alveolus and the root may be together embraced, and
the former broken and removed with the latter. This
is a rather rough method of operation, though it is
often adopted. Or, an elevator of the proper form may
be introduced between the root and the alveolus, and

the root thus dislodged.
The screw, either simple or compound, is a valuable
instrument for the removal of these roots. But the
gum should be separated even when the extraction
is to be accomplished with this. The canal in the
root should first be enlarged with a taper drill, of the
same shape as the screw, till all the softened dentine
is removed. Then the screw, selected of proper
size, having a very sharp thread, is introduced till
it takes a strong hold in the solid dentine, espe-
cially if it is the simple screw. In some instances,
while it is being introduced, the root will be loosened.

In using the screw in connection with the forceps, it
is not necessary to introduce it with the same firm-
ness as when the screw alone is employed. In the
use of the screw-forceps, the screw is embraced in
the beaks, and introduced; then, the forceps are passed