Effects of saliva and nasal secretion on some physical properties off our different resin materials

ABSTRACT

Objective: Aim of this study was to evaluate possible effects of saliva and nasal secretion on some physical properties,such as sorption, solubility, surface hardness and colour change on four different resin-based materials overa certain time period.Materials and Methods: A total of 128 disc-shaped specimens with a diameter of 50mm and thickness of 0.5mm were tested to evaluate sorption and solubility (ISO-1567). The specimens were stored in different solutions prior to testing. Surface hardness measurements were performed by using a Vickers hardness testing machine. A total of 20 cylinder shaped test specimens with a diameter of 13 mm and thickness of 1 mm were prepared to evaluate colour change (ÄE).Analysis of variance was used to determine significant differences among groups. Paired t and Tukey Post-Hoc tests were performed to investigate significant differences among subgroups at all time intervals (p<0.05).Results: It was found that while the percentage absorption value at T7(7 days) of the auto-polymerizing (A) groups storaged in artificial saliva + nasal secretion were the highest (0.057±0.119), the percentage absorption value atT15(15 days) of the D groups storaged in artificial nasal secretion were the lowest (0.013±0.09). Besides, it was found that the percentage solubility value at T30(30 days) of visible ligth-cusing resin (VLC) groups storaged inartificial nasal secretion were the highest (0.016±0.003), and the percentage solubility value at T1(1 day) of the Dgroups storaged in distilled water were the lowest (0.01±0.02). While (..) (AU)

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