Enrique Castañeda-Castaneira

Fluoride content in table salt distributed in Mexico City, Mexico.

OBJECTIVE The aim of this study was to analyze table salt available in Mexico Citys market to identify the fluoride concentrations and to compare these with the Mexican regulations. METHODS We analyzed 44 different brands of table salt. All samples were purchased at random in different stores, supermarkets, and groceries from Mexico Citys metropolitan area and analyzed in triplicate in three different laboratories (nine determinations per sample) with an Orion 720 A potentiometer and an Orion 9609 BN ion-specific electrode. RESULTS Fluoride concentration in the samples varied from 0 ppm to 485 ppm. It was found that fluoride concentration varied widely among the analyzed brands. Also, we found that fluoride concentration in 92 percent of the analyzed samples did not match with that printed on the label. Only 6.8 percent of the analyzed samples contained fluoride concentrations that meet Mexican and WHO regulations. CONCLUSIONS The broad variation in the analyzed samples suggests that Mexican Public Health authorities must implement more stringent regulation guidelines and procedures for controlling the distribution of salt and its fluoride concentration for human consumption.

Tratamiento para manchas por fluorosis dental por medio de micro abrasión sin instrumentos rotatorios

El diagnostico juega un papel importante para elegir el tratamiento en los dientes con cambios de coloracion provocados por caries o tinciones dentarias, dicho tratamiento debe ser apropiado para llenar las expectativas esteticas del paciente. La microabrasion es uno de los tratamientos mas conservadores para tratar las pigmentaciones y defectos causados en el esmalte dental por la ingesta de fluor. Esta tecnica consiste en remover las capas superficiales del esmalte, por medio de la aplicacion de acido clorhidrico al 18%, sobre el esmalte afectado. Su indicacion clinica es para coloraciones superficiales localizadas en el esmalte, donde el blanqueamiento dental no resuelve satisfactoriamente el problema estetico.