Page 196 - My FlipBook

192 CLASSIFICATION OF DECAYED CAVITIES.

is often experienced by
Fie. 49.
the patient relaxing the
hold, or compression, or
moving it from one side

to the other, on account of
fatigue of the parts upon
which it bears. This fact
induced the idea, and sub-
sequently the production
of the Tongue Compressor
or Clamp Speculum. This
instrument in many cases
serves a very valuable
purpose, holding the ton-

gue in a fixed position;
and in connection with

it, by the proper adjust-
ment of pads of bibulous
or blotting paper upon
and beneath the tongue,
entirely arresting the dis-
charge of saliva from the
sublingual and submaxil-
lary ducts. This instru-
ment is represented in
Fig. 50.
Many experiments have