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Flo. 142.
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Fig. 142. A cavity formed by beginnings of decay in the central and distal pits in an upper
molar similar to that shown in Figures 138-141.
Fig. 143. The cavity. Figure 142, prepared tor filling. In this case the mesio-buccal angle of
the cavity and the mesial halt of the buccal wall have been strongly sloped to the mesial and to the
buccal tor convenience in placing the filling. This plan of inclination of the cavity walls is often
much more necessary in cavities in the second and third molars.
Fig. 144. The same as in Figure 143, with tlie filling placed and finished.
