Background
tooth
Demand for ideal esthetic material in restoring teeth impacted both materials and techniques [Using nanotechnology in dentistry, manufacturers are now introducing resin composite materials with single-shade systems instead of more complex color systems. These materials have color harmony with tooth structure due to their nanofillers and nanocluster content. Recently, single-shade resin composite, which can be used for all tooth shades, has been introduced to the dentist's use. The advantage of its color-matching ability is that it eliminates the need for a shade-taking procedure. It reduces composite inventory, minimizing chair time for the patient and the wastage of unused composite shades [Composite resins' color stability and surface roughness are essential for esthetic success [In order to assess the color stability of restorative materials, many instrumental techniques could be used, such as; Digital cameras, Spectrophotometers, or colorimeters. Evaluating (ΔE) is referred to Commission International De L’éclairage (CIE) system [Surface roughness is considered one of the reasons for exterior discoloration [Our study examines the color stability and surface roughness of innovative chromatic resin composite after exposing them to commonly consumed beverages and coffee for 14 days using Vita Easyshade V, a contact stylus profilometer, and AFM. The null hypothesis was that there was no difference in the ΔE and Ra of both single-shade composite resins after immersing in coffee for 14 days.