Abstract
Implant design and biomaterial composition are contributing factors in stress distribution throughout the implant body and the surrounding bone. The aim of this study was to evaluate the pattern of stress distribution using four different implant systems based on finite element analysis. This study was conducted using a cone beam computed tomography scan and four implant systems (ITI, SPI, 3i, and IDCAM); mandibular and implant models were constructed by a computer-aided design software (CATIA). Stress distribution under axial, mesio-distal, and combination static loading was assessed using finite element analysis in ABAQUS. The maximum von Mises stress value in dental implants was recorded for IDCAMs and IDCAMm implants considering all types of loading directions; however, these implant models showed the least stress distribution in the surrounding bone. The maximum stress occurred using combination followed by axial and mesio-distal loading. The stress distribution was concentrated, in all designs, at the level of the most coronal portion of the cortical bone. Within the limitations of the present study, it could be assumed that implant design may affect the distribution of stress in the implant body, and it could be used as a strategy to reduce stress concentration in the surrounding bone.
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