Dere K. A., Akkocaoglu M.
CLINICAL AND EXPERIMENTAL HEALTH SCIENCES, cilt.12, sa.1, ss.87-93, 2022 (ESCI, TRDizin)
Özet
Objective: Implant geometry has an impact on the initial implant stability in the surrounding bone, stress distributions, and long-term success.The purpose of this finite element study was to measure and compare the stress values formed during the stepwise placement of conical andcylindrical implants in the Type 2 bone.Methods: Conical and cylindrical implants (3.75-mm in diameter, 10-mm in length) were planned to be placed in the Type 2 bone. Stressesduring insertion of the implants with clockwise torque of 450 N were measured 0.5-, 1-, and 1.5-mm distance from the implant and 2-10 mmdepths between two millimeters apart. Maximum and minimum principal stresses and von Mises stresses in the cortical and trabecular bonewere evaluated with a three-dimensional finite element analysis.Results: The conical implant was created higher stress values than the cylindrical implant in the same condition, and the cortical bone showedhigher stresses than the trabecular bone during the placement of both implants. Besides, the stress values were decreased as the depthincreased and the distance from the implant decreased, as the depth increased from 2-mm to 10-mm and the distance from the implantdecreased from 1.5-mm to 0.5-mm.Conclusion: When the stresses generated in the cortical and trabecular bone surrounding the implant were evaluated, the cylindrical implantwas found to be more advantageous than the conical implant of the same length and diameter