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Lateral view of the von-Mises stress distribution in the prosthetic screws according to the different superstructure materials: (A) PEEK, (B) CF, (C) Ti, (D) CoCr and (E) Zi. Both posterior and anterior prosthetic screws were involved in the load distribution, with a greater effect at the posterior one. Regardless, when the elastic modulus of the superstructure material decreases, the stress concentration on the screw increases.
