Fig. 6

SEM micrographs of DPSCs on scaffold of different subgroups. A1) subgroup showing AB extract (black arrows), cells seeded and attached to the scaffold surface and some cells became elongated (dashed arrow). A2) subgroup showing cells attached on the scaffold's surface (black arrows). A3) subgroup showing cells attached, hanged on the scaffold's pores (arrows) and secreted foam-like matrix (dashed arrow). A4) subgroup showing cells attached and seeded on the scaffold's surface properly, cells also showing evidence of matrix formation. B1) subgroup showing cells attached and seeded on the scaffold's surface with matrix formation. B2) subgroup showing cells attached on the scaffold's surface (arrow) forming extracellular thread-like matrix (dashed arrow). B3) subgroup showing cells attached and expanded on the scaffold's surface (arrow) with the formation of sponge -like matrix in between the cells (dashed arrow). B4) subgroup showing cells expanded on the scaffold (arrow) and form a spongy like structure on the surface of the scaffold (dashed arrow).A) PCL-NC-HA scaffold, B) PCL-NC-HA scaffold, 1) Activa bioactive, 2) TheraCal, 3) MTA 4) Scaffold only no bioactive material