Mechanical evaluation of test configuration and dental implant geometry

Abstract

In the present work, the mechanical behavior of a dental implant system (screw-implant plus abutment) was studied. The effect of: (i) screw-implant geometry, (ii) contact condition and (iii) specimen holder material on the mechanical performance of a dental implant system was investigated. Finite Element Analysis and mechanical tests were carried out. The results showed that, screw-implant diameter and length affected the von Mises and maximum Principal Stress distributions. These geometrical factors influence the maximal values and stress concentration zone size, respectively. Maximal displacement values were drastically diminished with increased screw-implant diameter. Simulations indicated as probable failure locations the threaded surface of screw-implant and abutment, confirmed by mechanical tests.