Efecto in vitro de las bebidas carbonatadas en la degradación de la fuerza tensional residual de las cadenas elastoméricas de ortodoncia

Abstract

Objective: To compare the in vitro force decay of orthodontic elastomeric chains exposed to carbonated beverages. Materials and Methods: 224 elastomeric chains (GAC International®) were used, being distributed into 16 groups: one for the initial time and the other 15 were divided according to the time period (initial, 1 hour, 24 hours, 7, 14 and 21 days) and the test solutions used (artificial saliva, Inca Kola® and Coca Cola®). The elastomeric chains were placed in acrylic containers so that they could stretch 25 mm. Two three-minute daily exposures to carbonated beverages were made, samples were placed in artificial saliva and then they were taken to the incubator until the next exposure. Control group kept immersed in artificial saliva. The force decay was measured through universal testing machine Instron® in the aforementioned six periods of time. Inferencial estatistics tests were applied: ANOVA one-way, Kruskal-Wallis test, Tukey’s post-hoc test and Mann-Whitney U test. Results: No significant differences (p>0.05) were found between the five periods of time when the force decay according to the time. However, significant differences (p<0.001) were found when comparing the force decay according to the group of study. Conclusions: Under in vitro conditions, the carbonated beverages did not cause a higher loss of force decay the elastomeric chains compared to the control group.