Available fluoride in toothpastes used by Brazilian children

Abstract

Toothpastes should have a minimum concentration of 1000 ppm of fluoride (F) to control caries and also the active F agent must be chemically free (soluble) in the formulation. Thus, the aim of this study was to evaluate the concentration of soluble F in dentifrices used by 206 Brazilian children. The concentrations of total fluoride (TF), total soluble fluoride (TSF) and fluoride ion were determined. From these analyses, the concentrations of F as sodium monofluorophosphate (MFP) and % of insoluble F were calculated. F was analyzed with an ion specific electrode in duplicates. The majority of dentifrices used (96%) contained F and in 84% of them, TF concentration was according to that declared by the manufacturers. In the F-toothpastes, 78% showed TSF concentration ≥ 1000 ppm, varying from 422.3 to 1432.3 ppm F (mean ± SD of 1017.6 ± 239.4). These findings suggest that most dentifrices used by Brazilian children present available fluoride concentration for caries control.

O Papel Do Dentifrício Sem Flúor Na Ocorrência Da Cárie Dentária Entre Pacientes Com Deficiências De Desenvolvimento Até Os Seis Anos De Idade

“…Os resultados do presente estudo demonstram que a cárie dentária esteve associada ao uso de creme dental sem flúor entre indivíduos com deficiências de desenvolvimento do serviço odontológico que funciona na Associação Mineira de Reabilitação, centro de referência em reabilitação motora em Minas Gerais em trabalho conjunto com a Faculdade de Odontologia da UFMG. Este resultado encontra apoio na literatura consultada (CURY et al, 2004;CURY et al, 2010;SANTOS et al, 2013;TENUTA, 2014;CURY et al, 2015). Nas faixas etárias de até 1 ano de idade e de 2 a 3 anos de idade, a dentição é essencialmente decídua.…”

Development of caries adjacent to composite restorations after exposure to dentifrices with different fluoride concentrations

“…One of its most common uses is in fluoride dentifrice, considered one of the products with the greatest cariostatic effect when used daily 3,4 . For this reason, the fluoride must be chemically free in its formulation, ensuring its bio-availability in the oral cavity during and after brushing 5 .…”

Fluoride concentration in public water supply: 72 months of analysis

“…However, care must be taken, since excessive exposure to fluoride by water consumption combined with other fluoride sources may result in undesirable effects, such as dental fluorosis (7)(8)(9). To achieve the expected results with this preventive method, a strict control of the process of water fluoridation is required, avoiding the undesirable effects of over-dosage, as well as avoiding underdosage, which does not offer the maximum benefits (2).…”