RESEARCH AND EDUCATION
Effect of sealant agents on the color stability and surface roughness of nanohybrid composite resins u Ömür Dede, DDS, PhD,a Onur S¸ahin, DDS, PhD,b Dog Aysegül Koroglu, DDS, PhD,c and Burak Yilmaz, DDS, PhDd Composite resins are widely ABSTRACT used for both anterior and Statement of problem. The effect of sealant agents on the surface roughness and color stability of posterior restorations because nanohybrid composite resins is unknown. of their esthetics, mechanical Purpose. The purpose of this in vitro study was to evaluate the effect of sealant agents on the properties, and bonding. Howsurface roughness and color stability of 4 nanohybrid composite resin materials. ever, marginal leakage due to Material and methods. Forty disks (10×2 mm) were fabricated for each nanohybrid composite polymerization shrinkage, high resin material (Z-550, Tetric EvoCeram, Clearfill Majesty, Ice) (N=160) and divided into 4 surface plaque accumulation, and low treatment groups: 1 conventional polishing (control) and 3 different sealant agent (Palaseal, color stability are their main Optiglaze, BisCover) coupling groups (n=10). The specimens were thermocycled, and surface limitations.1-3 The characterisroughness (Ra) values were obtained with a profilometer. Scanning electron microscope images tics of filler particles and the were also recorded. CIELab color parameters of each specimen were measured with a spectrostructure of the resin matrix photometer before and after 7 days of storage in a coffee solution. Color differences were calculated by the CIEDE 2000 (DE00) formula. The data were statistically analyzed by 2-way ANOVA and may affect the mechanical by the Tukey HSD test (a=.05). properties as well as the surface 4,5 roughness of resin materials. Results. The surface treatment technique significantly affected the Ra values of the composite The surface roughness of a resins tested (P
Effect of sealant agents on the color stability and surface roughness of nanohybrid composite resins u Ömür Dede, DDS, PhD,a Onur S¸ahin, DDS, PhD,b Dog Aysegül Koroglu, DDS, PhD,c and Burak Yilmaz, DDS, PhDd Composite resins are widely ABSTRACT used for both anterior and Statement of problem. The effect of sealant agents on the surface roughness and color stability of posterior restorations because nanohybrid composite resins is unknown. of their esthetics, mechanical Purpose. The purpose of this in vitro study was to evaluate the effect of sealant agents on the properties, and bonding. Howsurface roughness and color stability of 4 nanohybrid composite resin materials. ever, marginal leakage due to Material and methods. Forty disks (10×2 mm) were fabricated for each nanohybrid composite polymerization shrinkage, high resin material (Z-550, Tetric EvoCeram, Clearfill Majesty, Ice) (N=160) and divided into 4 surface plaque accumulation, and low treatment groups: 1 conventional polishing (control) and 3 different sealant agent (Palaseal, color stability are their main Optiglaze, BisCover) coupling groups (n=10). The specimens were thermocycled, and surface limitations.1-3 The characterisroughness (Ra) values were obtained with a profilometer. Scanning electron microscope images tics of filler particles and the were also recorded. CIELab color parameters of each specimen were measured with a spectrostructure of the resin matrix photometer before and after 7 days of storage in a coffee solution. Color differences were calculated by the CIEDE 2000 (DE00) formula. The data were statistically analyzed by 2-way ANOVA and may affect the mechanical by the Tukey HSD test (a=.05). properties as well as the surface 4,5 roughness of resin materials. Results. The surface treatment technique significantly affected the Ra values of the composite The surface roughness of a resins tested (P
