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TIN AND NON-COHESIVE GOLD 171

from the operator to cover the wall. Condense thoroughly
against the wall with the plugger. (See Figs. 186 and 187.)
(2) In large cavities place another layer of cylinders
against the first layer, and condense in the same direction,
holding in position with a plugger in the left hand.

Repeat the procedure on the opposite wall, and then
(3)
on the two intervening walls, leaving the center of the cavity

unfilled.
Force one or more cylinders into the central opening,
(4)

Fig. 186.—Plugging non-cohe- Fig. 187.—Internal view of the same cav-
sive gold cylinders into an occlusal ity illustrated in Fig. i86, showing cylinders
cavity on a lower first molar. condensed against the lateral walls.

the number depending on its size, ramming them in until the

cavity is full.
Force an opening, by means of the wedge-shaped
(5)
pluggers, into another part of the filling, and pack in one or
more smaller cylinders here, repeating this process at other
points until it is impossible, by great force, to insert any more

cylinders.
(6) Thoroughly condense with foot pluggers by means
of mallet force and then burnish.
Trim to shape, grind to shape, or file to shape and
(7)
burnish again, continuing until the filling is of proper fullness