fig3

Figure 3. Scanning electron micrographs of BD specimens at 4 different magnifications (70× for A and B, 150× for C and D, 500× for E and F, and 5000× for G and H). (A) Superficial cohesive failure in Biodentine in the 12-min group; (B) deeper cohseive failure in Biodentine int he 96-h group; (C, E and G) irregular and porous structure can be seen in the 12-min group; (D, F and H) more regular and smooth structure can be seen in the 96-h group