G.V. Black's Classification of carious lesions

Cavities in pits/fissures

Class I

Cavities in the proximal surfaces of premolars and molars

Class II

Cavities in proximal surfaces of incisors and canines that do NOT involve the incisal angle

Class III

Cavities in proximal surfaces of incisors or canines that involve the incisal angle

Class IV

Cavities in the cervical 1/3 of facial and lingual surfaces (not pit or fissure)

Class V

Cavities on incisal edges of anterior teeth and cusp tips of posterior teeth

Class VI

Which surface is not a location for a Class I lesion in G.V. Black’s Classification system?

Facial surfaces of incisors and canines