Dental Occlusal caries index (ICDAS 1 and Histological Validation), code 4 means? A Enamel demineralization Limited to outer 50% of enamel B Demineralization involving inner 50% of enamel upto DEJ C Demineralization involving outer 50% of dentine D Demineralization involving inner 50% of dentine 💡 Explanation Occlusal caries index (ICDAS 1 and Histological Validation), code 4 means? ✓ Correct Answer: D. Demineralization involving inner 50% of dentine