Abstract: There are many studies that have investigated the force decay associated with orthodontic synthetic elastomeric chains; however few have compared different colours from different suppliers.
Aim: To compare the force loss of 3 different coloured elastomeric chains from 3 suppliers.
Method: Three different coloured elastomeric chains; clear, grey, and blue from 3 suppliers; (3M, TP, and GAC (DENTSPLY)) were tested using Instron Tensile Testing Machine. Records of residual force taken; initially, 1 h, 24 h, 7 days, and 28 days.
Findings: Blue had the highest force decay in all the three brands. TP was the only material in which all colours were significantly different. Clear in both 3M and GAC perform better than grey, but grey was superior to clear in TP. All brands have different force decay; TP (grey then clear) gave the highest and the most constant force for the tested period, followed by 3M, and lastly GAC. when comparing the force decay after 7 days, TP (grey and clear) lost 40%-50% of their force and continued to retain it until the end of 28 days, where as 3M, GAC, and TP blue had lost 50%-75% of their force after 7 days, and only retained 13%-32% of their initial force at the end of 28 days.
Conclusions: Different colours have different force decay. The blue colour had the lowest residual force. TP E-chain (grey & clear) maintained the force required for tooth movement for the whole test period, while 3M and GAC fail to deliver the minimum required force after 24 h, and 1 h respectively.
Keywords: Vivo Investigation, TP E-Chain, Different Force Decay.
Title: Force Decay Associated With Coloured Elastomeric Chains; an Ex Vivo Investigation
Author: Hussain alabduljabbar
International Journal of Healthcare Sciences
ISSN 2348-5728 (Online)
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