@article{article_111802, title={EFFECT OF SURFACE SEALING ON STAIN RESISTANCE OF A NANO-HYBRID RESIN COMPOSITE}, journal={Journal of Istanbul University Faculty of Dentistry}, volume={49}, pages={23–30}, year={2015}, DOI={10.17096/jiufd.24298}, author={Saygı, Günçe and Karakoç, Pınar and Serbes, İşıl and Özel, Sevda and Erdemir, Uğur and Yücel, Taner}, keywords={Color; surface sealant; discoloration; composite; coffee}, abstract={<strong>Purpose: </strong> This study investigated the influence of <br />sealant application on stain resistance of a nanohybrid <br />resin composite compared to the efficacy of a <br />bonding agent used as a surface sealant on prolonging <br />color stability of the resin composite. <br /> <strong>Materials and Methods: </strong> 28 disc-shaped materials <br />were prepared from a nano-hybrid resin composite <br />Filtek Z550 and assigned to four groups: G1K: nonsealed; <br />G2:Adper Single Bond; G3: Fortify ; G4: <br />Biscover LV. After 24 h storage in distilled water at <br />37˚C, all specimens were subjected to thermocycling <br />and immersed into coffee solution. Color measurements <br />were performed using spectrophotometer (VITA <br />Easyshade; Vident) according to CIEL*a*b* system. <br /> <strong>Results: </strong> Color change values were significantly <br />different among the groups in each evaluation period <br />except for after thermocycling (p<0.05). For 7 days <br />evaluation period, the difference between G3 and G4 <br />group was statistically significant while G4 exhibited <br />statistically significant differences (p<0.05 and <br />p<0.0001 respectively) compared to control (G1) in <br />14 day whereas no significant difference was found <br />between GI and GII in 28-day evaluation period. <br />However, ΔE values of sealed specimens (GIII, GIV) <br />differed significantly from non-sealed (GI) specimens <br />after 28 days of immersion in coffee solution (p<0.05 <br />and p<0.0001 respectively). <br /> <strong>Conclusion: </strong> It may be concluded that using a <br />bonding agent as a surface sealant does not increase <br />stain resistance of resin composites of the sealants <br />evaluated. Biscover LV showed the highest efficacy <br />to prolong color stability of the resin composite.}, number={2}, publisher={Istanbul University}