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Evaluation of the pH of a Self-Adhesive Flowable Composite Over 3 Months


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The purpose of this study is to evaluate the pH of a self-adhesive flowable composite under varying storage methods over the course of 3 months. Vertise Flow (registered), a self-adhesive flowable composite, shade A2, was ordered and shipped from the manufacturer by normal means. The composite was stored at three different temperatures: room temperature (73F), incubator (131F) and refrigerator (36F). A benchtop pH meter and micro bulb electrode were calibrated prior to each reading using the protocol and solutions provided by the manufacturer. The readings were performed in a dark room under red lighting. A baseline pH reading was taken of each sample prior to initiating their storage. Every 30 days the samples were removed from their various storage methods and allowed to normalize to room temperature prior to taking the next pH reading. The data was gathered and analyzed using statistical analysis. On the ANOVA, there was no statistically significant difference in pH between storage methods (p > 0.05). There was a statistically significant difference in pH between times (p < 0.001). When the data were plotted as a boxplot, the distribution did not appear to be normal, so the analysis was repeated with a non-parametric Kruskal-Wallis ANOVA. This confirmed the results.



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