Abstract
Background: Physical properties of a resin composite are as important for the longevity of composite material as the mechanical properties are for its survival in the oral environment. Objectives: The aim of this study is to evaluate the effect of artificial saliva with different pH (4.6, 5.1, 5.7, 6.3, 6.9, 7.5&8.1) on the sorption of dental nano-filled composites. Material and Methods: 5 disc shaped specimens were made for each group of pH with nano-filled composite resin and immersed for four weeks. Optical density was measured in Ultraviolet Vis Spectrophotometer. Statistical one-way analysis of variance (one-way ANOVA) and the two-way analysis of variance (ANOVA) were used throughout this study. Results: No significant differences were detected in specimens of any group of pH. Conclusions: Salivary pH has no effect on the nano-filled dental composite material. Future research needs to test more experimental designs that could depict the clinical behavior of the restorative material in vitro environment.
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