Which of the following dyes is used for detection of enamel caries?: (A) Acid red system, (B) Zygo ZL-22, (C) α - Aminoacridine, (D) All the above
Answer is B. CARIES DETECTION DYES
 
Enamel Caries: 

0.5% Basic fuschin 
Zygo ZL-22 
Fuschin

Dentinal Caries:

Acid red system 
α - Aminoacridine