Comparative analysis of force degradation of latex orthodontic elastics of 5/16'' diameter: an in vitro study.
Minerva Stomatol. 2016 Apr 22;
Authors: Seibt S, Salmoria I, Cericato GO, Paranhos LR, Rosario HD, El Haje O
Abstract
BACKGROUND: this study aimed to analyze, six commercial brands of latex elastics regarding force degradation according to time, immediately and in time intervals of 12, 24, 48, and 72 hours.
METHODS: the elastics were stretched by three times their diameter, measured, immersed in artificial saliva at 37 °C, and stored in a glass container. Data obtained were described by mean parameters, standard deviation, degradation rate, and coefficient of variation and Tukey's post hoc test (p<0.05).
RESULTS: American OrthodonticsTM was the brand closest to prescription (94.70%), and UnidenTM was the one with the lowest performance (73.60%). By analyzing the total force degradation rate at the end of the experiment, it is noted that elastics from the OrthometricTM brand presented the highest rate (20.24%).
CONCLUSIONS: it is concluded that the latex elastics studied suffer great intensity variation of initial force, and the higher variation rate occurs in the first 12 hours.
PMID: 27103149 [PubMed - as supplied by publisher]
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