Comparative analysis of force degradation of latex orthodontic elastics of 5/16'' diameter: an in vitro study.

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Comparative analysis of force degradation of latex orthodontic elastics of 5/16'' diameter: an in vitro study.

Minerva Stomatol. 2016 Oct;65(5):284-90

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 based on the time factor, 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 Orthodontics™ was the brand closest to prescription (94.70%), and Uniden™ 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 Orthometric™ 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: 27580653 [PubMed - in process]

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