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CAVITY NOMENCLATURE 23

hi case the pulp is removed the piilpal Avail becomes the sub-
pulpal wall, ill multi-rooted teeth.
The axial wall is the inside wall of an axial surface cavity which
covers the pulp and is in a plane parallel to the long axis of the
tooth.

Fig. 3.—Smooth surface decay.

Fig. 4.—Smooth surface decay.

In case the pulp is removed in an axial surface cavity the axial
wall becomes an outside wall and takes the name of the surface of
the tooth toward which it is placed.
The gingival w^all is the inside wall of an axial surface cavity