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Figure 3 :(a) Contour alteration in PC crowns after steam autoclaving at 134 oC at 30 psi for 4 min (G2); (b) Contour alteration in NSC crowns after steam autoclaving at 134 oC at 15 psi for 30 min (G4); (c) Contour alteration in PP crowns after steam autoclaving at 134 oC at 30 psi for 4 min (G2)

Figure 3 :(a) Contour alteration in PC crowns after steam autoclaving at 134 oC at 30 psi for 4 min (G2); (b) Contour alteration in NSC crowns after steam autoclaving at 134 oC at 15 psi for 30 min (G4); (c) Contour alteration in PP crowns after steam autoclaving at 134 oC at 30 psi for 4 min (G2)