Open AccessEffect of gaseous hydrochloric acid on human and bovine enamel
Author(s) -
Juliana dos Reis Derceli,
Juliana Jendiroba Faraoni,
Paulo Eduardo Miamoto Dias,
Laís Lopes Machado de Matos,
Regina Guenka PalmaDibb
Publication year - 2020
Publication title -
clinical and laboratorial research in dentistry
Language(s) - English
Resource type - Journals
ISSN - 2357-8041
DOI - 10.11606/issn.2357-8041.clrd.2020.171222
Subject(s) - enamel paint , hydrochloric acid , demineralization , saliva , nuclear chemistry , indentation hardness , tooth erosion , surface roughness , materials science , dentistry , dental enamel , chromatography , chemistry , metallurgy , composite material , biochemistry , medicine , microstructure
Objective: To evaluate the action of gaseous hydrochloric acid on human and bovine enamel and compare the demineralization pattern of these substrates exposed to the gaseous erosive agent. Methods: Eight bovine enamel and eight human enamel specimens were obtained (4 × 4 × 2 mm), half surface was protected with composite resin and the other half was exposed to gaseous hydrochloric acid (gHCl), pH 2 at 37 °C, for 3 min, 8 times a day, for 12 days, and in intervals the specimens were maintained in artificial saliva. The specimens were analyzed according to wear profile, surface roughness and microhardness (before and after acid exposition). Data were statistically analyzed by one-way ANOVA. Results: Data showed no significant difference between bovine and human enamel for all properties analyzed – microhardness (98.1 ± 5.2, 96.9 ± 4.8), wear profile (11.5 ± 2.8, 11.4 ± 3.6) and roughness (2.6 ± 0.3, 3.3 ± 0.3), respectively. In images, we observed that gHCl could cause enamel erosion in both groups. Conclusion: Gaseous hydrochloric acid causes similar enamel erosion on bovine and humans.