Department of Endodontics, Tabriz University of Medical Science, IranFulltext PDF
Objective: This study investigated the effect of different sealants on the color stability and surface roughness of nano-composite resins after immersion in coffee solution. Materials and Methods: Ninety samples (15 samples in 4 experimental groups and 2 control groups) of two nanohybrid (Z250 XT 3M-SHADE A1) and nanofilled composite resins (Tokuyama-Estelite Sigma Quick) were examined. The samples were prepared by a Teflon mold measuring 2 mm × 10 mm. The samples were divided into 6 groups, and all samples were polished. The groups without sealants were called the control group, and the groups with two types of sealants (G Coated Plus [GC] and Permaseal [Ultradent]) on the surface of each nanofilled and nanohybrid composite resins were called the test group. The samples were thermocycled (30 seconds of submersion), 3000 cycles at 5/55ºC). Measurements of surface roughness and color parameters were made by a profilometer and a digital spectrophotometer before and after immersion in the coffee solution at 37°C for 7 days. The recorded data were statistically analyzed by two-way ANOVA and Tukey HSD tests (α=0.05). Results: Sealants did not significantly affect Ra in both types of composite resin. In both types of composite resin, the sealants reduced ΔE00. The reduction of ΔE00 with the GC sealant was similar in the two composite resin types. However, the Ultradent sealant caused a further reduction of ΔE00 in the nanohybrid than in nanofilled composite resin. Conclusion: Sealants increased the color stability of nanofilled and nanohybrid composite resins but did not change surface roughness.
Sealants; Nanofilled composite resin; Nanohybrid composite resin; Color stability; Surface roughness
Tehranchi P. Effect of Dental Sealants on Color Stability and Surface Roughness of Nanocomposites. J Dent Oral Biol. 2024; 9(1): 1223. ISSN: 2475-5680.