Abstract
Using strain gauge analysis, the aim of this in vitro study was to quantify the strain development during the fixation of three-unit screw implant-supported FPDs, in internal hexagons under axial and nonaxial loading. Three dental implants with internal hexagons were inserted inline into the polyurethane block. Microunit abutments were screwed, applying a torque of 20Ncm. Four strain gaug…