Black's classification (Restoration)

Class I
  • All pit-and-fissure restorations are Class I, and they are assigned to three groups, as follows:
    • Restorations on occlusal surface of premolars and molars.
    • Restorations on occlusal two thirds of the facial and lingual surfaces of molars.
    • Restorations on lingual surface of maxillary incisors.


Class II
Restorations on the proximal surfaces of posterior teeth.


Class III
Restorations on the proximal surfaces of anterior teeth that do not involve the incisal angle.


Class IV
Restorations on the proximal surfaces of anterior teeth that do involve the incisal edge.


Class V
Restorations on the gingival third of the facial or lingual surfaces of all teeth (except pit-and-fissure lesions).


Class VI
Restorations on the incisal edge of anterior teeth or the occlusal cusp heights of posterior teeth.
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