Page 121 - My FlipBook

PLUGGING INSTRUMENTS. 117

employed, ranging from 18 to 26, Stub's gauge. A
thin double point, from 26 to 28, is in many cases
very valuable. Instruments with a condensing sur-
face on the side, instead of the end, will frequently
be required for filling lateral cavities ; these may be
denominated lateral pluggers. (Fig. 32.) This COn-

Fig. 32.

densing surface should also be serrated, as already
described. An instrument square at the point,
ranging from 18 to 22, and cut upon the end by

passing it along the cuts of a file both ways, thus
making a large number of small serrations at right
angles across the point, is valuable for consolidating

Fig. 33.

the surface of a plug. (Fig. 33.) Operating super-
ficially, on the principle of the more deeply serrated
instruments, it yet leaves the surface free from deep