Contenido de fluoruro en dentífricos de venta en el mercado nacional / Fluoride content in toothpastes sold in the national market

Introducción: Actualmente, existe una gran variedad de pastas dentales que se pueden encontrar en el mercado nacional, para diferentes propósitos. Entre éstas se hallan las empleadas para la prevención de caries. Éstas contienen fluoruro en diversas concentraciones como agente terapéutico, y casi en su totalidad estipulan en sus marbetes un contenido de 1,000 a 1,450 partes por millón (ppm) de fluoruro. Algunos estudios han mostrado que las concentraciones de fluoruro especificadas en la etiqueta y lo encontrado en el dentífrico no coinciden. Objetivo: Evaluar la concentración de fluoruro total con base en la Norma Mexicana NMX-K-539-CNCP-2013, que establece que los dentífricos no deben contener más de 1,500 ppm de fluoruro. Así como determinar si lo declarado en el marbete de sus empaques corresponde al contenido real de fluoruro. Material y métodos: El estudio se realizó, por triplicado, en 37 pastas dentífricas. El método para determinar la concentración de fluoruro fue el de ion selectivo, descrito por la Farmacopea de los Estados Unidos Mexicanos. Resultados: El promedio de concentración de este elemento fue de 1,262 ppm F- (± 170.7). El 59% de los dentífricos analizados no contienen la cantidad estipulada en el marbete. Conclusiones: Las concentraciones de fluoruro de los dentífricos se encuentran dentro de la Norma. Las concentraciones no corresponden a lo estipulado en el empaque (AU)

Introduction: Currently, there is a wide variety of toothpastes, which can be found in the national market, for different purposes. Among these are those used for the prevention of dental caries. These, contain fluoride in various concentrations as a therapeutic agent, and almost in their entirety, stipulate in their labels a content of 1,000 to 1,450 ppm of fluoride. Some studies have shown that the fluoride concentrations specified on the label, and what is found in the toothpaste do not match. Objective: To evaluate the concentration of total fluoride based on the Mexican Standard NMX-K-539-CNCP-2013, which establishes that toothpastes should not contain more than 1,500 ppm of fluoride. As well as determining if what is stated on the label of their packaging corresponds to the actual content of fluoride. Material and methods: The study was carried out, in triplicate, on 37 toothpastes. The method for determining the fluoride concentration was that of selective ion, described by the Pharmacopoeia of the United Mexican States. Results: The average concentration of this element was 1,262 ppm F- (± 170.7). Fifty nine percent of the dentifrices analyzed do not contain the amount stipulated in the label. Conclusions: The fluoride concentrations of dentifrices are within the Standard. The concentrations do not correspond to what is stipulated in the package (AU)

Avaliação in vitro do efeito de dentifrícios branqueadores contendo blue covarine sobre o esmalte dentário bovino / In vitro evaluation of the effect of bleaching dentifrices containing blue covarine on bovine dental enamel

Introdução: O blue covarine é um agente branqueador que promove mudanças ópticas na superfície dos dentes, associado aos abrasivos dos dentifrícios, colaborando para o branqueamento dentário. Objetivo: Determinar as alterações de cor, rugosidade e massa do esmalte bovino, após escovação simulada com dentifrícios branqueadores contendo blue covarine nos tempos 6, 12 e 24 meses. Material e método: 80 corpos de prova (CP) foram divididos em 8 grupos (n = 10): grupo controle (GC-água) e 7 grupos teste (GT1-Colgate Total 12, GT2-Oral-B 3D White Perfection, GT3-Colgate Luminous Instant White, GT4-Close Up White Diamond Attraction, GT5-Close Up White-Glacier Fresh, GT6-Sorriso Xtreme White, GT7-Colgate Luminous White Advanced). Os CP foram escurecidos com café e submetidos à escovação simulada por 6, 12 e 24 meses. As avaliações de cor, rugosidade e massa foram realizadas após cada período de escovação. Resultado: Nenhum dentifrício teste promoveu alterações significativas na rugosidade e massa dos CP, contudo, quando comparados ao GC todos promoveram branqueamento significativo. A comparação dos grupos teste não demonstrou diferença significativa na variação de cor entre GT1, GT2, GT3, GT5, GT6 e GT7 nos tempos estudados. O GT4 apresentou comportamento variável de acordo com o tempo, não diferindo estatisticamente de GT3 aos 6, 12 e 24 meses, de GT6 aos 6 e 12 meses e de GT7 aos 12 meses. Conclusão: O efeito branqueador dos dentifrícios contendo blue covarine , após 2 anos de escovação, parece estar relacionado principalmente com a sua associação aos agentes branqueadores mecânicos, que promoveram o polimento das superfícies dentárias.

Introduction: Blue covarine is a bleaching agent that produces optical changes on the surface of the teeth, associated with the abrasives of the dentifrice leading to tooth whitening. Objective: To determine the changes in colour, roughness and mass of the bovine enamel, after simulated brushing with dentifrices - containing blue covariate bleaching - for 6, 12 and 24 months. Material and method: 80 specimens were divided into 8 groups (n = 10): Control group (CG-water) and 7 test groups (TG1-Colgate Total 12, TG2-Oral-B 3D White Perfection, TG3 -Colgate Luminous Instant White, TG4-Close Up White Diamond Attraction, TG5-Close Up White Now-Glacier Fresh, TG6-Sorriso Xtreme White, TG7-Colgate Luminous White Advanced). The specimens were stained with coffee and subjected to simulated brushing for 6, 12 and 24 months. The colour, roughness and mass evaluations were performed after each brushing period. Result: No dentifrice test produced significant alterations in the roughness and mass of the specimens, however, when compared to CG, all of themproduced significant whitening. The comparison of the test groups did not show a significant difference in the colour variation between TG1, TG2, TG3, TG5, TG6 and TG7 in the study. The TG4 presented a variable behavior according to time, not statistically differing from TG3 at 6, 12 and 24 months, neither from TG6 at 6 and 12 months nor from TG7 at 12 months. Conclusion: The whitening effect of dentifrices containing blue covarine, after long periods of brushing, seems to be related mainly to association with mechanical bleaching agents, which, despite abrasives, did not damage the dental structure.

The effect of sodium bicarbonate abrasives in toothpaste on dental plaque removal: A pilot study

@#<p style="text-align: justify;"><strong>BACKGROUND AND OBJECTIVE:</strong> The role of dental plaque as the etiology of caries and periodontal diseases has long been established. Therefore, plaque control is central to the prevention and management of these oral diseases. Among the different means of self-performed plaque control, brushing is the most essential. Moreover, toothpaste is a common adjunct during tooth brushing, as its abrasive contents are believed to enhance plaque removal. This study aimed to compare the effectiveness of plaque removal when brushing with a sodium bicarbonate abrasive-containing toothpaste, compared to brushing using an abrasive-free toothpaste.</p><p style="text-align: justify;"><strong>METHODS:</strong> Twelve students from the University of the Philippines College of Dentistry participated in the study. The subjects discontinued all oral hygiene measures for a minimum of 48 hours. Using the Modified Bass technique, they performed tooth brushing for two minutes, using either an abrasive-free or abrasive containing toothpaste. Toothpaste allocation was randomized via fishbowl method. Pre-brushing and post brushing plaque scores were recorded using the Turesky modification of Quigley-Hein plaque index. A washout period of 11 days was implemented before crossover to the second round, wherein employed toothpastes were switched. The difference in plaque reduction between the two kinds of toothpaste was analyzed using Wilcoxon signed rank test.</p><p style="text-align: justify;"><strong>RESULTS AND CONCLUSION: </strong>Overall plaque reductions were 75% for the abrasive-free toothpaste and 73% for the abrasive-containing toothpaste. The difference between the toothpaste was statistically insignificant (p=0.48). Therefore, based on the study, brushing with a sodium bicarbonate abrasive-containing toothpaste resulted in similar levels of plaque removal, compared to brushing with an abrasive-free toothpaste. There is insufficient evidence that abrasives in toothpaste result in more effective dental plaque removal. </p>