Abstrakt

Analysis of the abutment-implant platform gap in internal hex dental implants

Ricardo Cardozo, Sergio Olate, Pablo Navarro, Javier Araya, Omar Gonzalez, Juan Carrasco, Claudia Zenteno

The aim of this research was to identify the abutment-implant gap using 20 N or 30 N torques for the abutment. A descriptive study was designed using 3 internal hex implant systems from four different companies; the implants were manipulated in a usual way, installing the respective prosthetic abutment in each platform using 20 N/cm² and 30 N/cm² torque. Then, observations were made and photos taken a LEO 1420 VP scanning electron microscope; the data were analyzed with the Shapiro-Wilk test of normality and t-test for related samples, considering a value of p<0.05 for significant differences to compare the group with 20N and the group with 30N torque. Significant differences were identified between the gap in abutments installed with either 20 N/cm² or 30 N/cm², with fewer differences being observed in the latter group. There were wide variations between the study units, with reductions from 49% to 23% from the interface with the lower (20 N/cm²) to the higher torque (30 N/cm²). It can be concluded that the installation torque of prosthetic abutments influences the interface between prosthetic connector and implant surface.