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CLASSIFICATION OF CAVITIES 117

CAVITY CLASSIFICATION, NOMENCLATURE, AND PREPARATION^

Classification
Cavities in the lingual surfaces of upper
incisors,
fissure (no j Cavities in occlusal surfaces of bicuspids and
extension for pre- molars.
vention), Cavities in the occlusal two-thirds of the
buccal and lingual surfaces of molars.
Cavities. Cavities in the gingival third of the labial,
buccal, and lingual surfaces.
Cavities in proximal surfaces of incisors and
Smooth surface (ex- cuspids which do not involve the mesial or
tension for preven ;i distal incisal angle.
tion). Cavities in proximal surfaces of incisors and
cuspids which do involve the mesial or
distal incisal angle.
Cavities in the proximal surfaces of bicuspids
and molars.
Note.—Cavities occurring in consequence of arrested devel-

opment are not included.
Another classification of cavities, based on the surface on
which they are situated, is also frequently used and is herewith
given.
Classification of Cavities
Labial
Buccal
Lingual
(a) Simple Cavities
\
Mesial
Distal
Occlusal
Mesio-incisal
Disto-incisal
Mesio-labial
Disto-labial
Mesio-lingual
(b) Complex Cavities • Disto-lingual
Mesio-occlusal
Disto-occlusal
Linguo-occlusal
Bucco-occlusal
Mesio-disto-occlusal
Mesio-disto-incisal
^The above tables on cavity nomenclature were published in the American Text-
book of Operative Dentistry, to the publishers of which acknowledgment is here
extended.