Final answer:
Class II cavity is the G.V. Black classification for carious lesions involving proximal surfaces of posterior teeth with occlusal involvement, which requires prompt dental treatment to prevent more serious conditions.
Step-by-step explanation:
The G.V. Black classification of carious lesions that involves proximal surfaces of posterior teeth and commonly includes the occlusal surface is the Class II cavity. G.V. Black's classification system is a way to describe the location and extent of tooth decay and is used internationally by dental professionals to guide treatment. Cavities developed in these areas can progress through the enamel and might reach the dentin or even the pulp. If not treated, this decay can lead to more serious conditions such as abscesses or systemic infections.
Treatment of dental caries varies depending on the progression of the lesion. It may include fillings, crowns, root canals, or extractions. Additionally, conditions such as trench mouth, or acute necrotizing ulcerative gingivitis, are related to the presence of specific bacteria and can worsen periodontal disease significantly.