Assessment of Primary Stability of Four Different Implant Designs Inserted into 3D-printed Simulation Models of Lower Jaw

The aim of this study was to investigate the effect of the implant macro- and micro design on the primary stability.200 dental implant test specimens were inserted into twenty 3D-printed simulation models of lower jaw, as the maximum insertion torque value, the PTV and the ISQ were measured. Considering the mean values of implants of different diameter, length, design or surface topography we concluded that the cylindrical implants with deeper thread and conical implants, which are tapered in their coronal region demonstrate higher primary stability, compared to the other two implant designs included in the study. The insertion of longer implants with larger diameter and rough surface improved the primary stability in 3D-printed simulation models of lower jaw.