Nonlinear finite element analysis of three implant–abutment interface designs

Abstract

The objective of this study was to investigate the mechanical characteristics of implant–abutment interface design in a dental implant system, using nonlinear finite element analysis (FEA) method. This finite element simulation study was applied on three commonly used commercial dental implant systems: model I, the reduced-diameter 3i implant system (West Palm Beach, FL, USA) with a hex and a 12-point double internal hexagonal connection; model II, the Semados implant system (Bego, Bremen, Germany) with combination of a conical (45° taper) and internal hexagonal connection; and model III, the Brånemark implant system (Nobel Biocare, Gothenburg, Sweden) with external hexagonal connection. In simulation, a force of 170 N with 45° oblique to the longitudinal axis of the implant was loaded to the top surface of the abutment. It has been found from the strength and stiffness analysis that the 3i implant system has the lowest maximum von Mises stress, principal stress and displacement while the Brånemark implant system has the highest. It was concluded from our preliminary study using nonlinear FEA that the reduced-diameter 3i implant system with a hex and a 12-point double internal hexagonal connection had a better stress distribution, and produced a smaller displacement than the other two implant systems.

Patient specific root-analogue dental implants – additive manufacturing and finite element analysis

“…Young's Modulus and Poisson's Ratio of cortical and cancellous bone are determined in respect to previous FEA studies [3][4][5].…”

Insertion Area in the Mandible Masticatory Muscles for use in Finite Element Analyses

“…The results of these simulations may provide information that clinically is not yet available, reducing the time and repetitive clinical experiences (Tang et al 2012). However, in certain conditions, due to the great complexity of the systems, there is a need for simplification, which should not interfere with the results of the FEA.…”

Implant-abutment Selection: A Literature Review

“…A study conducted by Tang et al showed that 12-point double hexagon con nection had better stress distribution and produced smaller displacement compared to other designs. 9 …”