Abstract
Objective: To determine the force decay and discoloration in Generation I and Generation II elastomeric chain on artificial saliva immersion. Material and methods: Generation I and Generation II elastomeric chains stretched on an acrylic board and immersed in artificial saliva for 1, 7, 14, 21, and 28 days according to the group of days. On each specified day, the force of each sample measured by an orthodontic force gauge and the magnitude of the force obtained is entered to the formula to find out the force decay in percentage, whereas discoloration of each sample analyzed by the color reader with CIE Lab analysis. Results: The force decay between Generation I and Generation II elastomeric chains showed a statistically significant difference in every group of days, in which Generation II is more effective in maintaining stretch force. Similar to force decay, the discoloration in Generation I elastomeric chains on the 14th day showed significant value and Generation II elastomeric chains were more stable in maintaining color compared to Generation I. Conclusions: over the entire research period time, Generation II elastomeric chains are more stable in maintaining stretch forces and color compared to Generation I elastomeric chains. KEYWORDS Discoloration; Elastomeric chain; Force decay; Generation I; Generation II.
Highlights
Elastomeric chains are one of the most used components in fixed orthodontic treatment
Based on the description above, this study aims to determine the comparison of Generation I and Generation II elastomeric chain force decay and discoloration immersed in artificial saliva
The force decay of Generation I elastomeric chains are listed in the following tables I and II: Figure 3 - Force decay comparison graph of Generation I and Generation II elastomeric chains
Summary
Elastomeric chains are one of the most used components in fixed orthodontic treatment. This kind of elastics available in the form of long chains with interconnected holes and when applied resemble ribbons that connect between teeth [1]. Elastomeric chains have disadvantages such as that are sufficiently sensitive to the oral environment, especially when exposed to saliva. Elastomeric chains are hydrophilic so that interaction between it and saliva will deform the internal bonds and make the physical properties become permanently deformed. This irreversible elastic deformation generates a force decay and discoloration of the elastomeric chains [3]. Factors in the oral cavity such as mastication pressure, tooth movement, pH variation, enzymes, and temperature of the oral cavity influence the degree of decrease in chain strength [4]
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