Evaluation of hypoplastic mottling in enamel of permanent teeth.

M-WA = milky-white appearance; BS = yellow-brown stains; P = pitting; CP = confluent pitting; CLA = corroded-like appearance;0 = normal (translucent and smooth enamel, glossy appearance).1 = mild (scattered small, opaque, milky-white patches; faint brown stains are sometimes apparent);2 = moderate (diffuse white opaque areas, minute pitting; brown stain is frequent; surfaces subject to attrition show marked wear).3 = severe (pits deeper and confluent, widespread stains; the tooth show a corroded-like appearance)./ = indefinable.