[Enamel resistance to acid dissolution. Its relation to cariogenic activity]

Relationship existing between enamel resistance (by developed colorimetric technique) and previous experience of caries and with further incidence, at a term of a year, was studied in schoolchildren aged 6, 8, 10 and 12 years. The study comprised 336 children in 1985-1986 period and 385 children in 1985-1987 period. Non significant positive correlation was found between values of colorimetric test and previous experience of caries; but, certainly, positive correlation was found with further incidence on permanent dentition. It is concluded that colorimetric test is useful for the selection of children with a very susceptible enamel, as well as for the prognosis of cariogenic activity valued together with other parameters.