The aim of this study was to evaluate the effect of some carbonated drinks on the force
decay properties of commercially available elastomeric chains. 200 short elastomeric chains of two types, conventional and memory chains, were evaluated under the sameconditions (150-200 gm at 25 mm). The samples were divided in five groups (40 chainsfor each group). The control group representedby artificial saliva and four test groups represented by orange based drinks, lemon based drinks, diet pepsi and regular pepsi. The force was measured at five different time intervals: At initial, 24 hours and 7, 14 and 21 days by a digital force gauge. The result showed that there were significant differences among groups. Statistically significant effectsof time on force decay were seen in all groups. Statistically significant difference was found between conventional and memory chains.