Evaluation of Resin Nanoceramic Material Surface Roughness, Translucency, Color Stability, and Bacterial Adhesion after Using Different Scaling Methods

Abstract

This study was designed to evaluate the effect of different scaling mechanisms; hand and ultrasonic scaling of different instrument material on surface roughness, color stability and bacterial accumulation of resin nanoceramic material. The material used was Lava ultimate. The material was cut into discs of 0.5mm thickness using a linear precision saw. The discs were then cemented in cavities of fixed dimensions that was created on flat surfaces of bovine teeth. Seventy samples were tested. Sixty samples were mounted onto a double pan balance of a specially designed scaling apparatus. After using the different ultrasonic tips, scalers and curettes in scaling of the specimens, surface roughness values were measured. It was measured using Atomic Force Microscopy and the tactile profilometer. All samples were then immersed in coffee solution. Specimens were left in solution until the temperature reached 37°C, and then they were put into an incubator. At the end of the 2 weeks, all of the samples were again tested for the color-change. Corresponding color changes were