CONCLUSIONS
The color stability of five composite restorative materials
was evaluated after 24 hours of immersion in
various staining solutions. Within the limitations of
this study, the following conclusions were drawn:
1. Filtek P60 (posterior resin composite) and
Filtek Z250(universal resin composite)- which did
not contain TEGDMA - were found to be more
color-stable than the materials which contained
TEGDMA: Filtek Supreme and Grandio(nanohybrid
resin composites), as well as Quadrant LC(universal
resin composite).
2. For all resin composite restorative materials
tested, their color change values in tea, coffee, and
red wine were greater than or equal to 3.7. In other
words, their color change in these staining agents
was visually perceptible as well as clinically unacceptable.
It is noteworthy that materials which contained
TEGDMA showed higher discoloration values, meaning
that TEGDMA was responsible for the discoloration
due to its hydrophilic character. In clinical
practice, patients should be aware of the staining effects
of the drinks tested in this study, while practitioners
should take into consideration the staining
susceptibility of the resin composites.