The aim of the study was to compare the effect of tea and yerba mate on color
stability of two types Nano-filled resin composite materials.
Color stability is an important factor to ensure the long-term of esthetic success
of ceramic restoration, there are several factors affect color stability, such as repeated firing.
Aim of Study: Color Difference comparison between two types of cer
amic fused to metal after repeat
firing by using spectrophotometer (Vita Easy Shade).
