Page 563 - My FlipBook

Fig. 34S. i-'iG. :ii'j.
Fig. 3-14. The plitgger 0x12-0-10 (Kiguro 324) in |iosition in ttio mesial portion of the cavity
for condensation of gold against the axial and gingival walls and building across connecting the
convenience points. The arrows and tlie dotted outlines show the directions at which force may be
applied. The broad side of the end of the plugger and an illustration of its face are shown just above
the molar tooth.
Fio. 345. The gold has been built along the axio-gingival line angle connecting the beginnings
in the two convenience points.
Fig. 346. The building has been continued about equally on the axial and gingival walls until
the cavo-surface angle of the gingival wall has been covered. In doing this, there has been a very
solid mass of gold to build against in covering the last part or margin of the gingival wall.
Fig. 347. Another view of the split cavity after the gingival wall has been covered. The
diagonal lines show the order of the building of the gold by which it is progressively brought out to
the margin of the cavity. The plugging instnunent in place is the 12x0-0-10, Figure 324, the flat
sides of which are right for building against the buccal and lingual walls, and over the cavo-surface
angle of the gingival wall.
Fig. 348. Illustration of the stepping of the instrument in building against walls of cavities.
Having laid a niaas of gold — cylinder, block or rope — so that some portion will come against the
cavity wall, form first a line of steps of the plugger point, as shown by the figure 1, i. e. on the por-
tion of the gold farthest from the cavity wall. The next lino of steps, 2, is then made, then 3 : finnlly
the last condensation of that piece of gold is along the cavity wall, as represented by the figure 4,
condensing this last gold between the cavity wall and the gold already condensed.
Fig. 340. Represents the mesial portion of the filling squared up and the surface made hori-
zontal. This should be done at once after the gingival wall has been fully covered.