Objetivo. Estudiar la correlación entre indentación/fuerza (F) y de resistencia/dureza (D) al momento fractura, ajustando por grupo (con sin fluorosis).Métodos. Estudio del tipo caso-control, in vitro en dientes permanentes humanos adultos. Se denominará “caso” a todos los con diagnóstico fluorosis dental. “control” diente igual orden diagnosticado evaluará el grado dureza incluidos ambos grupo...

A EARLY as 1901, the condition now called dental fluorosis or mottled enamel was described in a letter written by J. M. Eager, a medical officer stationed in Naples, Italy, who reported its presence among Italian emigrants.' The term "mottled enamel" was first used by Dr. G. V. Black in a series of articles published jointly with Dr. Frederick S. McKay2'3 in which the lesions were described in ...

Fluoride is one of the few chemicals of natural origin that have been shown to cause significant health effects in people through drinking-water. The association between the fluoride level in drinking water and the degree of dental fluorosis has been documented worldwide. The permissible maximum health-based fluoride limit in drinking water is 1.5 mg/l. The aim of this paper is to assess human ...

The aim of this study was to determine the prevalence and severity of dental fluorosis among 12-15-year-old students from João Pessoa, PB, Brazil before starting a program of artificial fluoridation of drinking water. The use of fluoridated dentifrice was also surveyed. A sample of 1,402 students was randomly selected. However, 31 students refused to participate and 257 were not permanent resid...

OBJECTIVE Chronic fluoride poisoning is called fluorosis. The aim of the study was to investigate effects of fluorosis on cardiovascular system in children by measuring QT dispersion (QTd), corrected QT dispersion (QTcd), heart rate variability (HRV) and echocardiography findings. METHODS Thirty-five children with dental fluorosis and 26 children as control group were included in this cross-s...

BACKGROUND Water fluoride level is unknown in many regions of Iran. Besides, only few non-controlled studies world-wide have assessed the effect of water fluoride on dental fluorosis and caries. We aimed to measure the fluoride level of 76 water supplies in 54 cities and evaluate the effect of fluoride on dental caries and fluorosis in a large multi-project study. MATERIALS AND METHODS In the...

The Puyehue-Cordon Caulle volcanic eruption deposited large amounts of tephra (ashes) on about 36 million ha of Argentina in June of 2011. Tephra was considered chemically innoxious based on water leachates, surface water fluoride levels were determined to be safe, and livestock losses were attributable to inanition and excessive tooth wear. To evaluate effects on wild ungulates, we sampled wil...

OBJECTIVE To describe the prevalence of dental fluorosis, to investigate its association with individual and contextual variables among 12-year-old schoolchildren, and to determine whether there were changes in the prevalence of this condition from 2003 to 2010. METHODS This cross-sectional study used data from an oral health survey carried out in Goiânia, Goiás, in 2010 (n = 2,075), and seco...