The present study assesses the shear strength of Polyether Ether Ketone (PEEK) and Zantex to thermopolymerizable acrylic resin (TAR) with different surface treatments. To this end, 100 test specimens were produced divided into two groups: G1(PEEK + TAR) G2 (Zantex TAR). Each group was subdivided subgroups A, B, C, D E (n=10) according pre-treatment: A: TAR PEEK/Zantex without treatment (control...