Page 124 - My FlipBook

120 INSTRUMENTS FOR FILLING.

rior; the thick, heavy, knife-shaped (Fig. 37), to the
posterior teeth. The latter, to facilitate their ap-
proach to the points operated upon, have various

curves, some single, others double ; the double being
preferable, since they bring the handle of the instru-

Fig. 36.

ment on a line with its cutting edge.
The cuts upon
this instrument, too, are quite various; in size

Fig. 37.

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ranging from very coarse to very fine, and
in obli-
quity from a line almost at right angles across it, to
one at an angle of forty-five degrees.
These cuts,
too, are either single or double, the double being
those made across one another. The single, however,