Created as a result of the enamel at the base of the pits & fissures being porous because mineral has been lost. Which term describes this?

• A. Quantitative porous zone
• B. Etched zone
• C. Demineralized zone
• D. Porous base zone

Answer: (A)

Porosity created by mineral loss in enamel is the hallmark of demineralization. At the base of pits and fissures, mineral loss makes the enamel more porous, creating spaces that can be quantified. Describing this as a quantitative porous zone emphasizes the measurable porosity resulting from demineralization, rather than just noting mineral loss or an artificial etching process. The term etched zone refers to acid-etched enamel used in bonding, not naturally carious change; a demineralized zone is accurate but does not capture the specific porosity measurement; and porous base zone isn’t a standard term. So the description best fits a zone of enamel with quantified porosity due to mineral loss.