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.