Efficacy comparison of various oxygen lnhibition layer (OIL) minimizing agents on composite resin by analysis of two different physical properties

Abstract

Introduction: Composite resins are the most common restorative materials that are used these days and have been radically improving over the past few years. Their polymerisation reaction can be inhibited during light-curing due to the oxygen presence in atmosphere. Aim/objective: The aim of this study is to evaluate effect of different air inhibition coating strategies on composite resin material in terms of hardness and discolouration. Material and Methodology: Composite discs of 6.5 X 2mm were prepared for samples which were cured under a) 0.5mm thick mylar strip b) thin layer of glycerine c) layer of KY jelly (commercial lubricant) d) air cure. These samples were dipped in cola, turmeric milk, coffee and distilled water for 14 days. Spectrophotometric analysis was done to assess the colour change and Vicker’s hardness test for assessment of the hardness. Statistical analysis was done and the results were concluded. Results: The results were analyzed with ANOVA one-way test followed by Student Newman-Keul test. Moreover, multiple comparisons of means were performed using the Student t-test (p<0.05). Conclusion: Presence of Oxygen inhibition layer(OIL) on surface layer of composite affected the specimens adversely by reducing the microhardness and increasing instability of colour.