Resumen

MONJARAS-AVILA, A. et al. Analysis of the surface of healthy and fluorotic human enamel using microhardness test. Superf. vacío [online]. 2017, vol.30, n.1, pp.6-9.  Epub 13-Oct-2020. ISSN 1665-3521.

The microhardness is an essential property of tooth enamel; there may be many factors that alter or diminish this quality causing weakness, one of which is dental fluorosis. The aim of this study was to evaluate the surface microhardness of fluorotic enamel compared with healthy enamel. Two hundred forty extracted human molars were classified into four groups: Healthy (H), mild (MI), moderate (MO) and severe (S) fluorosis according to the Dean index. Micro Vickers Hardness Tester was used to analyze all samples. Average, standard deviation and ranges were calculated for quantitative variables, the ANOVA and Tukey test was used to identify differences between groups. The mean values of surface microhardness in HVN were: H, 333.4; MI, 290.3; MO, 266.1; S, 252.0. The differences between mean surface microhardness among healthy group and fluorotic groups were statistically significant (p < 0.05). This in vitro study confirms that surface microhardness decreased according to the severity of fluorosis.

Palabras llave : Healthy enamel; flourosis enamel; surface microhardness test.

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