Medición de Flúor Total Contenido en Dentífricos Comerciales
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Fecha
2007
Profesor/a Guía
Facultad/escuela
Idioma
es
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
El principal agente preventivo y terapéutico para la caries es el fluoruro. Los dentífricos constituyen uno de los principales vehículos de administración, junto al agua potable. La efectividad del fluoruro depende de su concentración, sin embargo, su ingesta excesiva en niños preescolares incrementa el riesgo de fluorosis. De ahí la importancia de conocer la concentración de fluoruros en los dentífricos comerciales. OBJETIVO: Comparar la concentración de flúor total contenida en pastas dentales infantiles comerciales con la concentración rotulada en los envases. METODOLOGIA: Se seleccionaron aleatoriamente 15 dentífricos comercialmente disponibles. De cada dentífrico se obtuvieron 3 gramos de pasta de los que se obtuvieron tres muestras. A cada muestra se le agregó ácido sulfúrico 4 N , y se llevó a ebullición durante 5 minutos. El pH de las soluciones se ajustó a 5.3 y se midió la concentración de flúor de cada solución con flúor electrodo. Se utilizó el test t de Student para detectar diferencias significativas. RESULTADOS: De las 15 pastas infantiles, todas contenían menos concentración que lo declarado en su rotulación. Igualmente, los dentífricos que declaraban 1000 ppm o más, tenían en promedio 689 ± 27.53 (DE) ppm (p<0.01) . De los rotulados con 500 ppm o menos la cantidad de fluoruros fue de 316± 23 (DE) ppm. CONCLUSION: Los dentífricos infantiles comercialmente disponibles contienen menos concentración de flúor total que lo rotulado en su envase.
Fluorides are the most important preventive and therapeutic agent against dental caries. Dentifrices are one of the main vehicles of administration, as well as water fluoridation. The effectiveness of fluorides is based on its concentration, however the risk of fluorosis is high if preeschool children ingest high amounts of fluoride. Hence the importance to assess fluoride concentration in dentifrices availables over-the-counter (OTC). OBJECTIVE: To compare the concentration of total fluorides from OTC child dentifrices with the labelled concentration. METHODS: Fiftheen OTC dentifrices were aleatory obtained. From each dentifrice 3 grams of paste were obtained and 3 samples were prepared to be measured. Sulfuric acid 4N was added to the samples and then taken until boiling for 5 minutes. The pH of the solutions was adjusted to 5.3. The fluoride concentration was measured by fluor electrode. Statistical significant differences were determined by Student's t test. RESULTS: All of 15 child toothpastes contained less concentration than declared on the labelling. At the same manner, dentifrices of 1000 ppm or more, had 689 ± 27.53 (SD) ppm (p<0.01) average. For the 500 ppm, the amount offluoride was 316± 23 (SD) ppm. CONCLUSION: Child dentifrices OTC have less concentration of total fluor than declared on their labelling.
Fluorides are the most important preventive and therapeutic agent against dental caries. Dentifrices are one of the main vehicles of administration, as well as water fluoridation. The effectiveness of fluorides is based on its concentration, however the risk of fluorosis is high if preeschool children ingest high amounts of fluoride. Hence the importance to assess fluoride concentration in dentifrices availables over-the-counter (OTC). OBJECTIVE: To compare the concentration of total fluorides from OTC child dentifrices with the labelled concentration. METHODS: Fiftheen OTC dentifrices were aleatory obtained. From each dentifrice 3 grams of paste were obtained and 3 samples were prepared to be measured. Sulfuric acid 4N was added to the samples and then taken until boiling for 5 minutes. The pH of the solutions was adjusted to 5.3. The fluoride concentration was measured by fluor electrode. Statistical significant differences were determined by Student's t test. RESULTS: All of 15 child toothpastes contained less concentration than declared on the labelling. At the same manner, dentifrices of 1000 ppm or more, had 689 ± 27.53 (SD) ppm (p<0.01) average. For the 500 ppm, the amount offluoride was 316± 23 (SD) ppm. CONCLUSION: Child dentifrices OTC have less concentration of total fluor than declared on their labelling.
Notas
Tesis (Magíster en Odontología, Especialización en Cariología)
Palabras clave
Flúor, Administración y Dosis, Niños, Normas de seguridad