ArticleProgress in orthodontics2026
Influence of storage conditions on the mechanical properties of intermaxillary elastics.
Article in Progress in orthodontics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundLatex intermaxillary elastics (IE) are common orthodontic auxiliaries, but their generated force degrades over time. This study investigated the impact of light and heat exposure during storage on the IE force. MATERIALS AND
methodsFrom 500 3/16" Medium IE ten test groups were formed. For one month, four groups were exposed to natural daylight and four to a temperature of 50° C in three different packaging types (original semi-opaque, transparent, and closed orthodontic box) or stored loosely. The control groups were stored in the dark at 23° C. The initial extension force (F
resultsAfter light exposure, IE stored loosely showed the lowest mean forces (F₀, F₂
conclusionOne month of light exposure reduced IE force even when stored in original packaging. Heat was less harmful, though residual force still declined. Storage in a box yielded the best results. Structural defects or shape irregularities may contribute to the differences in force degradation. Patient guidelines should advise keeping IE in a light-proof container at a stable room temperature.
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