Effect of hydrochloric acid commercial presentation for microabrasion technique on loss of enamel structure and surface

Pâmela Lopes Pedro da Silva, Patricia Pereira Maciel, Lídia Batista Conrado Martins, Eliseu Aldrigui Münchow, Rogério Lacerda-Santos, Fabíola Galbiatti de Carvalho, Hugo Lemes Carlo


Introduction: The microabrasion technique can be performed using a commercially available paste, or the dentist can prepare it in his office. Objective: To verify the effect of hydrochloric acid commercial presentation in the handling of microabrasion paste on the enamel surface. Methodology: Bovine incisors were divided into two groups, according to the commercial presentation of 10% hydrochloric acid (liquid or gel). The treatment was carried out through ten applications of 10 s duration each, intercalated with a 10s wash. Twenty teeth (n=10) were used to determine the loss of enamel structure. Each sample was weighed on an analytical balance before and after submission to microabrasion. Another 20 teeth (n=10) were used to determine the average surface roughness (Ra) using a rugosimeter. Three samples from each group of the previous experiment were selected, randomly, and another three additional samples were repared as a control (baseline) for SEM analysis. Results: There was a statistically significant difference between the final and initial mass and the surface roughness of the samples, regardless of the acid commercial presentation. In the SEM images, a regular surface was observed for the control group (baseline). In the other images, there was a surface with considerable irregularity and a slight dissolution of the enamel. Conclusions: The treatment carried out.


Esmalte dentário; Microabrasão do esmalte; Desgaste dos dentes

DOI: https://doi.org/10.22456/2177-0018.103044

e-ISSN 2177-0018 / ISSN 0566-1854. Indexers: descrição da foto descrição da foto descrição da foto