What defines advanced caries according to G.V. Black?

The definition of advanced caries according to G.V. Black is characterized by a lesion that extends to or through the dentinoenamel junction (DEJ) but does not reach the pulp. This classification highlights that advanced caries has progressed beyond the initial stages, which typically involve enamel only, indicating a more significant level of dental decay that has penetrated into the underlying dentin. At this stage, the carious process is more serious and requires attentive treatment to prevent further progression towards the pulp chamber, where the dental pulp resides. Understanding this definition is crucial for dental professionals as it aids in determining the severity of caries and the appropriate intervention required to manage tooth decay effectively.