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604 EXTRACTION OF TEETH.
moving; a large })iccc of the outer plate of the alveolar process. (See
Accidents, p. 612.)
THE THIRD MOLAR.
This tooth so varies as to the sliape and inimber of its roots that it
is seldom spoken of as an abnormal tooth, no matter in wiiat form or
Fig. 543.












































Showing position for extracting upper teeth of left side.
position it may be found ; the greater number have roots curved back-
ward and outward. Their position in the jaw also varies considerably.
The forceps shown in Fig. 488 is the instrument to use in extracting.
After the forceps have been firmly placed, the principal motion is the
out-and-in, though more out than in. If there is much resistance the
hand should be carried outward and upward, or in the direction of the
least resistance. This tooth is sometimes erupted at the side of the
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