Figure 4-37.Typical operative dentistry instrument tray setup.
A cavity preparation is a mechanical procedure
that removes caries or existing restorative materials
and a limited amount of healthy tooth structure to
receive and retain restorative materials in the cavity
preparation. A cavity wall is a side or surface of the
cavity preparation that aids in enclosing the restorative
material. You should already be familiar with the
terms used to describe the various tooth surfaces, such
as mesial, distal, lingual, facial, incisal, and occlusal.
A bevel is a slanting of the enamel margins of the tooth
preparation cut at an angle with the cavity wall. There
are numerous types of bevels, such as full, long,
chamfer, and dovetail.
Cavities can occur on one or more surfaces, and
can be of various sizes, ranging from very small to
those that include all five surfaces of the tooth. Simply,
cavities are those which occur on one surface of the
tooth. When two surfaces of the tooth are involved, the
cavity is called a compound cavity. A cavity is