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Fio. 278.

Fig. 270. Fig. 2S0.

Figs. 276-280. A series of illustrations showing the method of restoring the angle of the tooth
by overcutting the incisal edge, or the incisal step plan.
Fig. 276. An incisor tooth in which a decay of the mesial surface has undermined the incisal
angle.
Fig. 277. The method of preparation, using the incisal step.
Fig. 278. The appearance of the tooth and finished filling as seen from the labial.
Figs. 279, 280, The lamination of gold in the building of the filling, by which the angle is
given the greatest strength. In Figure 279. the diagonal lines at the gingival portion show the
building of the filling against the axial and gingival walls until Ihe gingival wall has been covered.
Then the horizontal lines show the leveling up after the gingival wall has been covered. The circular
lines in Figure 280 show the method of raising the central area and building continuously over from
laliial to lingual and from lingual to labial so as to give the immediate angle the greatest possible
strength.
28b