In Black's classification, what does Class III refer to?

In Black's classification, Class III specifically refers to cavities that occur in the interproximal spaces of anterior teeth, particularly the incisors and canines. These cavities usually affect the enamel and dentin between the teeth due to caries or decay that is not visible from the facial or lingual aspects, as they are located in the areas between the teeth.

Understanding this classification is important because it aids dental professionals in identifying the type of restoration required based on the location of the cavity. For example, Class III restorations often necessitate specific techniques to access the cavity without damaging the adjacent teeth or structures.

The other classifications address different locations and types of decay: occlusal cavities are involved with the chewing surfaces of posterior teeth, Class II interproximal cavities occur between posterior teeth, and Class I cavities are confined to pits and fissures.