Page 609 - My FlipBook

THE LOWER TEETH. 607

tooth illustrated in this particular case would be very difficult to ex-
tract without breaking.
Fig. 546.

Showing position for extracting lower anterior teeth.
THE FIRST MOLAR.
(For position see Fig. 547 for the left side, Fig. 548 for the right
side.)
The first molar, if in a mouth where all the teeth are in position, is
generally the most difficult of all the teeth to extract. The roots are
usually long and diverging. It is lower in the arch than the other
teeth, and is in fact similar to an inverted keystone ; consequently,
when extracted it is drawn through the arch. When the teeth are close
together the second bicus])id and second molar yield a little, but great
care must be taken that one or both of these teeth are not extracted