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Pellicle thickness over time and average pellicle thicknesses formed on four dental materials. Thicknesses were calculated using the Kelvin-Voigt viscoelastic model based on the 5th, 7th and 9th overtones of QCM-D frequency and dissipation changes. No significant differences in thickness were observed for pellicle formed on all four materials, before and after water rinse (N =4).
