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CAVITY NOMENCLATURE II3
ture of cavity preparation is essential to an understanding
of the contents of the following chapter.
Angle.—The union of two surfaces along a definite line
{line angle) or of three surfaces at a point {point angle) .
Cavo-surface Angle.—The angle formed by the junction
of the walls of the cavity with the surface of the tooth.
Axial Line Angle.—A line angle running parallel with the
long axis of the tooth.
Pulpal Line Angle.—One running horizontally to the long
axis of the tooth.
Wall.—One of the internal boundaries of a cavity.
Margin.—The junction of the walls of a cavity with the
surface of a tooth.
Marginal Outline.—The shape of the cavity along its
margins.
Dento-enamel Junction.—The line representing the junc-
tion of the enamel and dentin.
The nomenclature of cavity preparation followed and now
considered official is that adopted by the Institute of Dental
Pedagogics, from the report of a committee of which Dr.
Thomas E. Weeks was Chairman, as follows:
CAVITY NOMENCLATURE
All that is to be said in describing cavity preparation can
be expressed by the use of the following nouns and adjectives:
Cavity Surface Labial Mesial Gingival
Wall Angle Buccal Distal Axial
Margin Thirds Lingual Incisal Pulpal
Plane Embrasure Proximal Occlusal Subpulpal
Cavity Names
Cavities in the teeth take the names of the surfaces in
which they occur.
ture of cavity preparation is essential to an understanding
of the contents of the following chapter.
Angle.—The union of two surfaces along a definite line
{line angle) or of three surfaces at a point {point angle) .
Cavo-surface Angle.—The angle formed by the junction
of the walls of the cavity with the surface of the tooth.
Axial Line Angle.—A line angle running parallel with the
long axis of the tooth.
Pulpal Line Angle.—One running horizontally to the long
axis of the tooth.
Wall.—One of the internal boundaries of a cavity.
Margin.—The junction of the walls of a cavity with the
surface of a tooth.
Marginal Outline.—The shape of the cavity along its
margins.
Dento-enamel Junction.—The line representing the junc-
tion of the enamel and dentin.
The nomenclature of cavity preparation followed and now
considered official is that adopted by the Institute of Dental
Pedagogics, from the report of a committee of which Dr.
Thomas E. Weeks was Chairman, as follows:
CAVITY NOMENCLATURE
All that is to be said in describing cavity preparation can
be expressed by the use of the following nouns and adjectives:
Cavity Surface Labial Mesial Gingival
Wall Angle Buccal Distal Axial
Margin Thirds Lingual Incisal Pulpal
Plane Embrasure Proximal Occlusal Subpulpal
Cavity Names
Cavities in the teeth take the names of the surfaces in
which they occur.
