Caries Classification and Nomenclature

1st topic (11/20/2025)

What caries classification is used for a lesion involving 1 surface?

Simple

What caries classification is used for a lesion involving 2 surfaces?

Compound

What caries classification is used for a lesion involving 3 or more surfaces?

Complex

Which GV Black classification describes lesions that occur in pits and fissures?

Class I

Which GV Black classification describes lesions that occur in the proximal surfaces of molars and premolars?

Class II

Which GV Black classification describes lesions that occur in the proximal surfaces of incisors and canines not involving the incisal edge?

Class III

Which GV Black classification describes lesions that occur in the proximal surfaces of incisors and canines involving the incisal edge?

Class IV

Which GV Black classification describes lesions that occur on the gingival 3rd of facial and lingual surfaces of ALL teeth?

Class V

Which GV Black classification describes lesions that occur on the incisal edge of anterior teeth or occlusal cusp heights of posterior teeth?

Class VI

Which GV Black classification describes lesions that occur on both the mesial and distal surfaces of molars and premolars that when restored will share a common occlusal isthmus?

Class VI (Charbeneau’s modification)

What part of a cavity preparation encloses the prepared cavity and is named according to location?

Walls

Which prepared cavity surface extends to the external tooth surface?

External wall

Which prepared cavity surface does not extend to the external tooth surface?

Internal wall

Which prepared cavity surface is an internal wall that is parallel to the long axis of the tooth?

Axial wall

Which prepared cavity surface is an internal wall that is perpendicular to the long axis of the tooth and is occlusal of the pulp?

Pulpal floor

Which part of a cavity preparation is almost right angle to the surrounding? It is flat and perpendicular to occlusal forces that are directed occlusogingivally.

Floor

Which cavity preparation angle is the junction of 2 surfaces of different orientation along a line? This is where two walls meet.

Line angle

Which cavity preparation angle is the junction of 3 surfaces? This is where 3 surfaces meet.

Point angle

What is the angle of tooth structure formed by the junction of a prepared cavity wall and the external tooth surface?

Cavosurface angle

What is the name of the junction of a prepared cavity wall and external tooth surface?

Cavosurface margin

How many line angles (LA) and point angles (PA) are in a Class I cavity prep?

LA: 8, PA: 4

How many line angles (LA) and point angles (PA) are in a Class II cavity prep?

LA: 11, PA: 6

How many line angles (LA) and point angles (PA) are in a Class III cavity prep?

LA: 6, PA: 3

How many line angles (LA) and point angles (PA) are in a Class IV cavity prep?

LA: 11, PA: 6

How many line angles (LA) and point angles (PA) are in a Class V cavity prep?

LA: 8, PA: 4