Artículo Original Estudio comparativo del grado de deformación de elásticos intermaxilares 3/16 fuerza mediana de varias marcas comerciales "in vitro".

The purpose of this study was to determine the of deformation of the intermaxillary elastics 3/16 Medium degree of the three commercial houses (GAC©, Ormco© and American Orthodontics©) and compare among them to know which one has the greatest loss of strength in 24 hours. The study included 24 samples, divided in three groups of eight elastics each one for manufacturer house. These were subjected to elastic stretch intervals of 6 hours from its original length to 19 mm, the force used was unit gr / f. A mechanism manufactured was used to simulate the intermaxillary elastics traction in the oral cavity. The values obtained were entered into a database and subjected to statistical analysis using the ANOVA test. The stretching results obtained were GAC© 202.33 ± 37.22 gr/ f. Ormco© 207.97 ± 28.13 gr / f and American Orthodontics© 209.19 ± 28.74 g / f . Although the tests showed different values of forces in the 3 groups. The American Orthodontics© leagues were the most resistant, followed by Ormco© and GAC© leagues. This study did not show values after statistical significant difference among the three groups.