Which of the following best lists the signs and symptoms of coronal caries?

• A. Plaque, White Spot, Surface Layer Present, Acid Dissolution is Slower Under Low pH
• B. Plaque Only
• C. White Spot Only
• D. Surface Layer Present, Acid Dissolution is Faster Under High pH

Answer: (A)

The signs to look for in coronal caries center on the presence and appearance of early enamel changes: a plaque biofilm is typically present on the tooth surface, a white spot lesion indicates subsurface mineral loss beneath the enamel, and the surface layer is still detectable, showing that the outer enamel is intact but undermined beneath. Together, these features reflect an early stage of coronal caries where visible surface changes coexist with underlying demineralization.

That combination is why the choice listing plaque, white spot, and surface layer present is the best answer. It captures the visible and sub-surface signs clinicians rely on to identify early coronal decay, rather than focusing on a single feature.

The statement about acid dissolution relates to how the caries process works: demineralization accelerates when the environment is acidic (low pH) and slows as pH rises. So acid dissolution is faster under low pH, not slower, and this part is not a sign of caries symptoms. Understanding this helps explain why the core signs—plaque, white spot, surface layer present—are the reliable indicators in this context.