Table 1 Diagnostic criteria based on Dean’s Index.

From: Structural changes in the oral microbiome of the adolescent patients with moderate or severe dental fluorosis

Classification

Code

Diagnostic criteriaa

Normal

Code 0

The surface of the Enamel is smooth and lustrous, usually milky white

Suspicious

Code 1

Enamel transparency has mild change, there are white spots to occasionally see white spots, clinical diagnosis can not be very mild

Very mild

Code 2

The opaque white area on the Enamel surface does not exceed 25% of the tooth surface

Mild

Code 3

The opaque white areas on the enamel surface are extensive, but not more than 50%

Moderate

Code 4

Most of the Enamel Surface Brown Dye, yellow–brown or Brown, teeth have a mild wear, affect the appearance

Severe

Code 5

The Enamel surface is all damaged, the pit defect is obvious, the stain is deep, the tooth Brittleness increases

  1. aAccording to the Enamel Color, luster and the area of the defect to determine the degree of damage, from a person's dentition found the most damaged two teeth score, if two teeth damage degree is different, with the lighter one score.
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