ÜÇ BOYUTLU SONLU ELEMAN ANALİZ YÖNTEMİYLE İKİ TİCARİ İMPLANT SİSTEMİNİN GERİLME DAĞILIMLARININ İNCELENMESİ

Abstract

Dental implants are considered as a successful replacement of missing teeth. Thread, thread design and body shape are in macro design of a dental implant. Thread design includes thread geometry, thread depth, thread pitch, face angle, thread helix angle or thickness. Many factors such as implant design, implant surface, material biocompatibility, surgical technique and loading conditions affect implant osseointegration. Finite Element Analysis (FEA) is an accepted theoretic technique that can be used to simulate mechanical systems to predict stresses within an object. This computerized mathematical method is utilized as an important tool to evaluate these effects and the implant biomechanical characteristics. Osseointegrated dental implants have similar role of natural teeth. They are continuously exposed to dynamic and static loadings. It is essential to understand stres concentrations around implants. Eight finite element models were constructed with two implant systems, which contained four types of fixture in combination with two types of bone quality; the numbers of elements and nodes were well refined in the models. The finite element analyses were performed with the ANSYS Workbench program, which was used to calculate the von Mises stress distribution. Computer-aided engineering software was used to input a 3D model of the sample and defined the mesh control of the models. After meshing the 3D model, conditions such as loads, constraints, and materials were assigned. All of the materials used in this study were considered to be homogenous, isotropic, and linearly elastic