Page 424 - My FlipBook

420 ANESTHETICS.

rubber ball, with the proper valves, and the points
from which proceed the spray, and these all con-
nected by the proper sized flexible tube.
It will be observed that there are variously formed
points, single and double, straight and curved ; these
are required for the various purposes to which the
instrument is applied.

For the extraction of teeth, the double point is
applicable, throwing a jet upon the gum each side of
the tooth at the same time. The single points are
required where an incision or excision is to be made.
This is a very valuable instrument, and is exten-
sively used in minor surgical operations, and is espe-
cially adapted to the dentist's use. Ether is perhaps
as yet the best agent employed. Rhigolene, a far
more volatile fluid than ether, has been used to a
limited extent, but owing to its exceedingly rapid
evaporation, its action is too violent, and not so easily
controlled.

EXTRACTION BY ELECTRO-MAGNETISM.

The employment of electro-magnetism in the ex-
traction of teeth was introduced to the profession
some ten years ago ; and at one time was exten-
sively used. There is a great diversity of opinion as
to its efficiency for relieving pain ; for, while some