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Class I

Class IV   proximal including incisal edges of anterior teeth.

Class II

Class V   gingival 1/3 of facial or lingual surfaces of anterior or posterior teeth.

Class III

Class I  pit & fissure, on occlusal, buccal, & lingual surfaces of posterior teeth, & Lingual of anterior teeth.

Class IV

Class III   proximal surfaces of centrals, laterals, & cuspids.

Class V

Class VI   cusp tips of molars, premolars, & cuspids.

Class VI

Class II   proximal surfaces of molars and premolars.