Fig. 4From: Cellular response of human apical papilla cells to calcium hydroxide and tricalcium silicate-based cementsMTA and UltraCal® increased F-actin protrusion. A scanning electron microscopic images of apical papilla cells adhered to ProRoot®MTA, and UltraCal®. Scale bar 5 μm at × 1500. Scale bar 2 μm at × 4000. n = 5Back to article page