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CAVITY NOMENCLATURE 115

Angles (Simple Cavities)
Mesio-buccal
Mesio-lingual
\ Occlusal cavities
Disto-buccal
Disto-lingual
Line (Axial)
Bucco-axial
Linguo-axial
Axial surface cavities
Mesio-axial
Disto-axial
Bucco-pulpal
Linguo-pulpal
Occlusal cavities
Mesio-pulpal
Disto-pulpal
Angles
Bucco-gingival
Line (Pulpal)
Linguo-gingival
Mesio-gingival
Disto-gingival > Axial surface cavities
Axio-gingival
(and combinations
with occlusal wall)
Point Mesio-bucco-pulpal Mesio -linguo-pulpal
Disto-bucco-pulpal Disto-linguo-pulpal

Point Angles (the union of three-line angles) take their

names from the surfaces forming them. In occlusal cavities
there are four.
In complex cavities on axial suriaces there is another
horizontal line angle, i.e., in axial cavities combined with

occlusal, the one formed by union of the axial and the pulpal
wall axio -pulpal.

Division into Thirds

Cavities may be divided into thirds, for convenience in
description, as teeth are divided.