- Immediate decontamination proved to be crucial to limit fluoride absorption.
- All decontamination strategies and water alone reduced dermal fluoride absorption.
- Buffer capacity may account for efficiency differences between decontaminants.
The fluoride ions of the industrially largely irreplaceable, locally corrosive hydrofluoric acid (HF) can scavenge cations in biological tissues, which explains their high toxic potential, and also leads to local acidification through proton release. The influence of three complexing agents, calcium (Ca2+) gluconate (as 2.5% Ca2+gel and individually (2.84%) or commercially (10%) formulated Ca2+solution), magnesium (Mg2+) gluconate (2.84%) solution and aluminium (Al3+) solution (Hexafluorine®, pure and diluted) on the absorption of fluoride following HF exposure (1–3 min, 100 ul, 30%/0.64 cm2) through human skin was investigated in an ex-vivo diffusion cell model. Fluoride absorption was assessed over 6–24 h and analysed with a fluoride electrode. Decreasing the contamination time reduced the fluoride absorption distinctly which was further reduced by the application of fluoride-binding decontamination agents (Ca2+, Mg2+, Al3+) or water alone without being significantly different. Ca2+ appeared slightly more effective than Mg2+ in reducing fluoride absorption. Moreover, the addition of pH adjusting buffer promoted the decontamination efficacy. Fluoride-binding agents can facilitate the decontamination of dermal HF exposure. However, prompt decontamination appeared to be the key to successful limitation of fluoride absorption and pushes the choice of decontamination agent almost into the background.
*Original abstract online at https://www.sciencedirect.com/science/article/abs/pii/S088723332030607X
Contact dermatitis and stomatitis due to amine fluoride
Case Report For prevention of dental caries, a 17-year-old boy had intermittently used a gel containing different fluoride compounds over a period of 2 years. In the last 2 months, 1 to 2 days after application, he had developed itchy perioral erythematous papules and plaques, with vesicles of the oral mucosa.
Vulvar Pagets disease: recovery without surgery following change to very low-fluoride spring and well water
A case report of a Caucasian female born in 1927 is presented in which rapid recovery from vulvar extramammary Paget’s disease (EMPD) without surgical intervention occurred following an abrupt change from fluoridated/chlorinated tap water (0.9- 1.0 mg F–/L) to low-fluoride spring and well water (both <0.1 mg F–/L) for drinking,
Fluoride and arsenic contamination in drinking water due to mining activities and its impact on local area population.
Contamination of arsenic and fluoride in drinking water reservoirs is a serious health issue in the Sibi district, Balochistan, Pakistan. The contamination has already been affecting a large population of the district. Dental fluorosis and dermatitis are the most common reported illnesses in the area. This study focused on the
Fluoride tooth paste: a cause of perioral dermatitis
Since its description in 1957 by Frumess and Lewis as a “light-sensitive seborrheid,” perioral dermatitis (PD) has continued to be a perplexing entity. (1) Many causes have been postulated, including sunlight sensitivity, birth control pills, emotional stress, fluorinated steroid creams, Candida albicans, and rosacea. We have gathered clinical and historical data implicating
Some epithelial changes in fluorosis.
Extract Like the skin and its appendages, the teeth, nails and hair, so also other tissues of ectodermal origin are here shown to be affected by fluorine. The action of fluorine consists in lowering the level of the calcium in the blood and tissues. The epithelia of the mouth and the
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