Dental fluorosis index

A.C. Pereira, B.H.W. Moreira, Analysis of three dental fluorosis indexes used in epidemiologic trials, Braz. Dent. J. 10 (1) (1999) 1-60. 

Grade of fluorosis Description of fluorosis Dental fluorosis index (D FI)... 

Several methods have been developed for quantifying dental fluorosis. The most commonly used method is Dean s index [49], which classifies fluorosis on a scale of 0 to 4 as follows class 0, no fluorosis class 1, very mild fluorosis (opaque white areas irregularly covering <25% of the tooth surface) class 2, mild fluorosis (white areas covering 25-50% of the tooth surface) class 3, moderate fluorosis (all surfaces affected, with some brown spots and marked wear on surfaces subject to attrition) and class 4, severe fluorosis (widespread brown stains and pitting). The average score of the two most severely affected teeth is used to derive the classification. Other commonly used methods to rate dental fluorosis include the Thylstrup-Fejerskov Index (TFI) [50] and the tooth surface... 

H.S. Horowitz, W.S. Driscoll, R.J. Meyers, S.B. Heifetz, A. Kingman, A new method for assessing the prevalence of dental fluorosis—the tooth surface index of fluorosis, J. Am. Dent. Assoc. 109 (1984) 37-41. 

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