Fig. 4From: An evaluation of two types of nickel-titanium wires in terms of micromorphology and nickel ions’ release following oral environment exposureAtomic force two-dimensional micrographs (10 × 10 μm) of A as received superelastic NiTi wires, B retrieved superelastic NiTi wires, C as received heat-activated NiTi wires, and D retrieved heat-activated NiTi wiresBack to article page