Effect of coffee on color stability and surface roughness of newly introduced single shade resin composite materials

HIGHLIGHTS

• who: Shaimaa Rohym from the Sixty samples were randomly allocated into two main groups (n=30) according to the composite resin usedGroup O: samples were obtained using single-shade composite resins (Omnichroma), and Group V: samples were obtained using single-shade composite resins (Venus Peral). Each group was then divided into two subgroups (n=15): group , and, : samples immersed in coffee. Group , and, : samples immersed in distilled water. The color change (u0394E) and roughness values (Ra) were evaluated for all samples at baseline (before immersion), and on the , u00ad st, and , u00ad, th days of immersion. Color . . .
  

   

  

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