Edition V18N05 | Year 2019 | Editorial Original Article | Pages 86 to 97
Objective: The aim of this study was to evaluate the elastic deformation of 14 different brands, submitted to decontaminating means, after 7, 14, 21 and 28 days stretched. Methods: Three loops were cut and measured with a digital caliper to stretch individualization to 50% of the original size. From the 20 samples of each brand, 5 were placed directly in the template (control), 5 were immersed in 0.2% peracetic acid, 5 were rubbed with 70% alcohol and 5 were autoclaved. Samples remained stretched in templates in artificial saliva at 37°C. For each period, elastics were measured and discarded. Data was submitted to descriptive statistical analysis, 3-way ANOVA and Tukey test (5%). Results: 3-way ANOVA showed statistically significant difference among trademarks, decontamination means and intervals measured; as well as possible interactions among groups. Tukey test showed best behavior for TP Orthodontics and GAC, followed by Rocky Mountain, American Orthodontics, Orthometric-Aditek, Aditek-Eurodonto, Dentaurum-Tecnident-Ormco-OrthoOrganizers, Abzil-Ormco-OrthoOrganizers, Morelli and Uniden. Autoclave was similar to artificial saliva, with fewer changes in elastic properties. Elastics deformation was proportional to the stretching time. Conclusions: There was plastic deformation, varying among brands, increased in function of time and influenced by decontamination method.
Mattos FS, Torres FC, Trivino T, Costa ALF, Freitas CF, Fuziy A. Avaliação da deformação de cadeias elastoméricas submetidas a diferentes meios de descontaminação. Rev Clín Ortod Dental Press. 2019 Out-Nov;18(5):86-97.