Page 322 - My FlipBook

320 PLASTIC FILLING MATERIALS.
A convenient and effective set of instruments for accomplishing the
packing are shown in Figs. 287-289.

Fig. 286.

30 31 32 33 34 35 36 37 38 39 40
Dr. J. Foster Flagg's amalgam and zinc filling instruments.

Dr. W. G. A. Bonwill has advised a method which accomplishes the
removal of surplus mercury and the even distribution of the mass,

Fig. 287.

Woodson's double-end amalgam instruments.

during the progress of the filling. Small squares of folded bibulous
paper are caught in the jaws of pliers and laid upon the amalgam,
when the exertion of pressure by means of amalgam pluggers or
pliers forces out the surplus solvent and it is wiped away with the
paper. The .same end is also accomplished by the use of bulbous
points of soft rubber.
When through either method the cavity is more than half full, the
remainder of the amalgam mass is wrung out to express more mercury,
and the packing is resumed until the cavity is more than full.
At the later stages of the filling the process of wafering is usually