Author/Authors :
Abdoh Tabrizi Maryam نويسنده Assistant Professor, Operative Dentistry, School of Dentistry, Shahid Behesht University of Medical Science. Shahid Behesht, Iran , Nakhostin Afrooz نويسنده Department of Restorative Dentistry, School of Dentistry,
Arak University of Medical Sciences, Arak, IR Iran , Raeisosadat Farkhondeh نويسنده Department of Operative Dentistry, School of Dentistry,
Shahid Beheshti University of Medical Sciences, Tehran, IR
Iran , Hashemi Zonooz Shaghayegh نويسنده Member of Iranian General Dentists Association, Rasht, IR
Iran , Raoufinejad Fatemeh نويسنده Department of Restorative Dentistry, School of Dentistry,
Zanjan University of Medical Sciences, Zanjan, IR
Iran , Javid Bahar نويسنده Department of Operative Dentistry, School of Dentistry,
Shahid Beheshti University of Medical Sciences, Tehran, IR
Iran , Jamali Zavare Faeze نويسنده Department of Operative Dentistry, School of Dentistry,
Shahid Beheshti University of Medical Sciences, Tehran, IR
Iran
Abstract :
Background: Color change is one major drawback of tooth-colored
resin-based restorations. Objectives: This study aimed to assess the
color stability of three commonly used resin-based restorative materials
upon exposure to tea and coffee. Materials and Methods: Discs were
fabricated from Spectrum TPH (Dentsply/Caulk), Denfil (Vericom), and
Filtek Z250 (3 M) microhybrid composites and immersed in coffee and tea
solutions for two hours on the first day and the whole of the second,
third, and fourth days. The color was assessed visually and recorded
using the Lobene Stain Index after each period of immersion. The color
change of the three composite resins was compared using the
Kruskal-Wallis test, Mann-Whitney U test, and Friedman test. The level
of significance was set at 0.05. The Cohen’s Kappa was also calculated
to assess inter-rater agreement. Results: The three composite resins
showed statistically significant color changes after four days of
immersion in a coffee solution (P = 0.014), but their color change in
the tea solution was not significant (P > 0.05). A comparison of
color changes in the composites after one (two hours) and four days of
immersion in tea and coffee solutions revealed a significant difference
in color changes between Spectrum TPH and the other two composites (P
< 0.001). Conclusions: The three microhybrid composites used in
this study showed variable color stability upon exposure to a coffee
solution. The color stability of Spectrum TPH was inferior to that of
Denfil and Filtek Z250.
