What are the walls of a class II cavity prep?

In a Class II cavity preparation, the walls include specific surfaces that define the extent of the cavity. The correct choice includes the mesial, distal, buccal, lingual, axial, and gingival walls, which correspond to the various parts of the tooth being prepared for restorative materials.

The mesial and distal walls are those that face the adjacent teeth, while the buccal wall faces the cheek and the lingual wall faces the tongue. The axial wall is important as it runs along the outline of the dentin and enamel on the side of the preparation, providing a flat, smooth structure for filling material. The gingival wall, located at the floor of the preparation, interfaces with the gingiva or gum tissue.

This comprehensive inclusion of all these walls is critical for ensuring proper support for the restorative material and for creating a well-defined cavity that minimizes the risk of future decay or failure of the restoration. This choice captures the complexity required in a Class II preparation and underscores the importance of each wall in achieving a successful outcome.