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Vu\. 1.
Fig. 1. A lower first molar with a prepared cavity in the occlusal surface.
Fig. 2. Diagram for explanation and naming of cavity walls in Figure 1. m w. Mesial wall.
B w, B w, B w. Buccal wall. d w. Distal wall. L w, L w. Lingual wall. p w. Pulpal wall.
If the contour of a wall is broken by the cutting out of grooves or other necessary deviation of form,
as occurs in the buccal wall in this case, the wall is named as a whole, the same as if the form were
regular.
2a
