Which of the following is NOT a caries CLASSIFICATION or detection system?

Correct answer: B. CAMBRA

• A. The G.V. BLACK classification IS a classification system — Classes I through VI, organised by lesion LOCATION on the tooth and the resulting cavity design.
• B. CORRECT — this is the exception. CAMBRA (Caries Management By Risk Assessment) is a RISK ASSESSMENT and management protocol. It does not classify or stage a lesion; it stratifies a PATIENT as low, moderate, high or extreme risk by weighing disease indicators, risk factors and protective factors, and then prescribes a preventive regimen. It describes the person, not the lesion.
• C. ICDAS (International Caries Detection and Assessment System) IS a classification system. It scores lesion severity visually from 0 (sound) through 1–2 (initial enamel change) and 3–4 (localised breakdown, underlying shadow) to 5–6 (frank cavitation into dentine).
• D. ICCMS (International Caries Classification and Management System) IS a classification framework. It builds on ICDAS, translating lesion scores into staging and management decisions.

Note: Keep the two ideas separate. RISK ASSESSMENT tools (CAMBRA, CRA) grade the PATIENT. CLASSIFICATION systems (ICDAS, ICCMS, G.V. Black) grade the LESION. An item asking which one 'is not a classification' is testing exactly this distinction.