Page 598 - My FlipBook

596 EXTRACTION OF TEETH.
molars. When tlic internal anatomy of the jaws is well understood,
this will be appreciated.
Fig. 537.

Elevator in use labially.
Fig. 519 shows how firmly the roots are embraced at their necks
between the two hard plates of compact tissue. It is usually impossible
Fig. 538.

Elevator in use lingually.
to force an instrument between the roots of teeth and these plates with-
out breaking the internal or external walls of the latter. The cancel-
lated tissue between these plates is, however, soft and yielding, and into