Akademik Veri Yönetim Sistemi
7th International Congress on Adhesive Dentistry, Konya, Türkiye, 1 - 04 Haziran 2023, ss.114, (Özet Bildiri)
Introduction: The aim of this study was to evaluate the roughness of the surface of composite resins applied with different
finishing techniques and their color stability after coloring with coffee.
Materials and Methods: A total of 100 disc-shaped samples prepared from nanohybrid composite (Polofil NHT, Voco
[N]) and microhybrid composite (Herculite Classic, Kerr [M]) resin were divided into 5 subgroups (n=10). One of the
groups served as control group (no surface treatment). Experimental groups were divided according to the surface finishing
protocol: bur+polishing (BP), arkansas+polishing (AP), bur+polishing with paste (BPP), and discs+polishing (DP). The
initial color of the samples was detected with a spectrophotometer (VITA Easyshade V, VITA Zahnfabrik, Germany), and
the surface roughness (Ra) of the samples was quantified by a profilometer (Mitutoyo SJ-210, Japan). Then the samples
were exposed to the coloration process with freshly prepared coffee solution every day. After 2 days, color measurements
were made again. Color change (∆E) was calculated using the CIEDE2000 system. Mann-Whitney U test, Kruskal Wallis
test and One-way analysis of variance were used for statistical analysis. The correlation between Ra and ∆E was statistically
evaluated.
Results: DP treatment on the M surface and DP and BPP treatments on the N surface produced significantly less Ra than
the other treatments and the control group (p<0.05). Although the BPP treatment in the M group had the lowest E value
compared to other treatments, there was no statistically significant difference between this value and that of the BP and DP
treatment groups (p>0.05). BPP treatment demonstrated a significantly lower E value in the N group compared to the other
groups (p< 0.05). A statistically significant correlation was found between Ra and ∆E values (p<0.05).
Conclusion: Composite finishing techniques affected the surface roughness and color stability of composites. The use of
discs and polishing paste in the finishing of both nanohybrid and microhybrid composites can reduce surface roughness
and discoloration due to coffee consumption.