Define CLASS I

• Cavities on the occlusal surface of premolars and molars, on the occlusal two-third of the facial and lingual surface of molars, on lingual surface of maxillary incisors.

• Cavities on the proximal surface of posterior teeth

• Cavities on the proximal surface of anterior teeth that do not include the incisal angle

• Cavities on the proximal surface of anterior teeth that include the incisal angle

Define CLASS II:

• Cavities on the proximal surface of posterior teeth

• Cavities on the proximal surface of anterior teeth that do not include the incisal angle

• Cavities on the proximal surface of anterior teeth that include the incisal angle

• Cavities on the gingival third of the facial or lingual surface of all teeth

Define CLASS III:

• Cavities on the proximal surface of anterior teeth that do not include the incisal angle

• Cavities on the proximal surface of anterior teeth that include the incisal angle

• Cavities on the gingival third of the facial or lingual surface of all teeth

• Cavities on the incisal edge of anterior teeth or occlusal cusp height of posterior teeth

Define CLASS IV:

• Cavities on the proximal surface of anterior teeth that include the incisal angle

• Cavities on the gingival third of the facial or lingual surface of all teeth

• Cavities on the incisal edge of anterior teeth or occlusal cusp height of posterior teeth

• Cavities on the proximal surface of posterior teeth

Define CLASS V:

• Cavities on the gingival third of the facial or lingual surface of all teeth

• Cavities on the incisal edge of anterior teeth or occlusal cusp height of posterior teeth

• Cavities on the proximal surface of posterior teeth

• Cavities on the proximal surface of anterior teeth that do not include the incisal angle

Define CLASS VI:

• Cavities on the incisal edge of anterior teeth or occlusal cusp height of posterior teeth

• Cavities on the proximal surface of posterior teeth

• Cavities on the proximal surface of anterior teeth that do not include the incisal angle

• Cavities on the proximal surface of anterior teeth that include the incisal angle

Cavities on the occlusal surface of premolars and molars, on the occlusal two-third of the facial and lingual surface of molars, on lingual surface of maxillary incisors.

• Class I

• Class II

• Class III

• Class IV

Cavities on the proximal surface of posterior teeth

• Class I

• Class II

• Class III

• Class IV

Cavities on the proximal surface of anterior teeth that do not include the incisal angle

• Class II

• Class III

• Class IV

• Class V

Cavities on the proximal surface of anterior teeth that include the incisal angle

• Class III

• Class IV

• Class V

• Class VI