Influencia de un enjuague a base de fluoruro y xilitol en la remineralización in vitro del esmalte en dientes temporales / Influence exerted by a xylitol and fluoride based mouthwash on the in vitro enamel remineralization of primary teeth

RESUMEN

El propósito del estudio fue evaluar la eficacia de un enjuague bucal con fluoruro de sodio y xilitol, en la remineralización del esmalte de dientes temporales. Se utilizaron 40 dientes sin caries, aplicando ácido fosfórico al 35% durante 20 segundos, y fueron inmersos en el enjuague por 0, 15, 30, 45 y 60 días. Se observaron cortes longitudinales de 150-250 µm de cada muestra y se valoró la remineralización, de acuerdo a la birrefringencia observada después de aplicarles solución de Thoulet (1.47 IR) bajo luz polarizada en un fotomicroscopio. A los 15 días tuvo una media de 0.444 (± 0.527), a los 30 días de 0.778 (± 0.441), a los 45 de 1.444 (± 0.527) y a los 60 días de 1.47 (± 0.483). El análisis de varianza permitió establecer diferencias estadísticamente significativas entre los grupos (p < 0.001), y comparándolos entre sí (p < 0.05). Puede concluirse que el enjuague empleado tuvo un ligero efecto remineralizante en el esmalte.

ABSTRACT

The purpose of the present study was to assess the effectiveness on primary teeth of a fluoride and xylitol based mouthwash. 40 caries-free teeth were used. 35% phosphoric acid was applied during 20 seconds. Teeth were then immersed in the mouthwash for 0, 15, 30, 45 and 60 days. 150-250μm longitudinal slices were taken of each sample. Re-mineralization was assessed according to bi-refringence observed after applying Thoulet solution (1.47 IR). Assessment was conducted under polarized light in a photo-microscope. At 15 days, a mean of 0.444 (± 0.527) was observed. After 30 days the observed mean was 0.778 (± 0.441). At 45 days, observed mean was 1.444 (± 0.527), and at 60 days, observed mean was 1.47 (± 0.483). Variance analysis established statistically significant differences among groups (p < 0.001) as well as when comparisons among groups were established (p < 0.05). After conducting the aforementioned tests it could be concluded that the employed mouthwash exerted a slight re-mineralizing effect upon the enamel of treated teeth.