Assessment of the force decay and the influence of pH levels on three different brands of latex and non-latex orthodontic elastics: An in vitro study
Journal Title: International Journal of Applied Dental Sciences - Year 2016, Vol 2, Issue 2
Abstract
Elastics are one of the most versatile material available to the orthodontist. Its an invaluable tool of the orthodontist armamentarium. The effects of salivary pH levels on viscoelastic force relaxation of nonlatex interarch elastics. Great individual pH variability is noted within the oral cavity, and this can fluctuate with diet. Aim of this study was to assess the force decay and the influence of pH levels on three different brands of latex and non-latex orthodontic elastics. Materials And Methods: Three stainless steel jigs with 8 sets of predetermined inter post distance of 14.8mm, 19.0 mm and 28.4 mm were fabricated to measure force degradation for 3 brands of latex and non latex elastic brands at 225%,300% and 450% and at pH 5,pH 6 and pH 7.5. An i universal testing machine (Mecmesin 10 i) is used to measure the force in grams exerted by the elastics for required percentage of stretching. Incubator (GE Electronics) was used in this study to regulate the temperature at 37 degree centigrade to simulate oral environment. Results: The percentage of force decay is less for non-latex elastics at various percentages of stretching at various time intervals and different Ph levels compared to latex group of elastics. The force degradation was observed during 3hrs-12 hrs period compared to 12hrs-24hrs irrespective of the latex and non latex elastic brands. The various levels of Ph had no significant influence in force degradation compared to time interval. Conclusion: The force decay was significantly different for latex and non latex group of elastics over the time period of 24 hrs irrespective of the pH of artificial saliva.
Authors and Affiliations
Dr. Shailaja AM, Dr. Santosh R, Dr. Vedhavathi HK, Dr. Keerthi NV, Dr. Shashank P Kumar
Keywords
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