Avaliação da estrutura do esmalte em dentes humanos após o uso de jato de bicarbonato de sódio e pasta profilática.

Abstract

This work aimed to evaluate the structure of the enamel in human teeth after the use of the sodium bicarbonate jet and the prophylactic paste. Eight healthy human teeth from two patients of different ages were selected. All samples were divided in half, with one half exposed to prophylaxis, while the other was protected with electrical tape, divided into two groups. In the first group, four lower incisors (32, 31, 41, 42) were used, all extracted from the same patient. Elements 31 and 32 were submitted to prophylaxis with sodium bicarbonate jet. In tooth 31 the application was made for 10 seconds, in element 32 the application was performed for 20 seconds, in both the application was at 1 cm distance and with an angle of 90º. In elements 41 and 42, prophylaxis was performed with prophylactic paste and Robson's brush with soft bristles, which were changed with each prophylaxis. In the second group, four third molars (18, 28, 38 and 48) were used, all extracted from the same younger patient than the patient in group 1. The methodology was the same used in the previous group. Elements 18 and 28 were submitted to prophylaxis with a sodium bicarbonate jet for 10 and 20 seconds, respectively, both with a distance of 1 centimeter for application and 90º of angulation. In elements 28 and 38, prophylaxis was performed with prophylactic paste and Robson's brush with soft bristles exchanged for each prophylaxis. Afterwards, the metallized samples for later qualitative analysis of the images obtained through the Scanning Electron Microscope (SEM) in magnifications of 10kx, 5kx, 1000x and 500x. It can be seen that the enamel after prophylaxis, both with the sodium bicarbonate jet, as well as with Robson's brush and prophylactic paste, there was no statistically significant change.