Abstract
In the literature, many researchers investigated static loading effects on an implant. However, dynamic loading under impact loading has not been investigated formally using numerical methods. This study aims to evaluate, with 3D finite element analysis (3D FEA), the stress transferred (maximum peak and variation in time) from a dynamic impact force applied to a single implant-supported prosthesis made from different materials. A 3D implant-supported prosthesis model was created on a digital model of a mandible section using CAD and reverse engineering. By setting different mechanical properties, six implant-supported prostheses made from different materials were simulated: metal (MET), metal-ceramic (MCER), metal-composite (MCOM), carbon fiber-composite (FCOM), PEEK-composite (PKCOM), and carbon fiber-ceramic (FCCER). Three-dimensional FEA was conducted to simulate the collision of 8.62 g implant-supported prosthesis models with a rigid plate at a speed of 1 m/s after a displacement of 0.01 mm. The stress peak transferred to the crown, titanium abutment, and cortical bone, and the stress variation in time, were assessed.
Highlights
Implant-supported prostheses are widely used for the rehabilitation of partially and fully edentulous patients
The composites and resins used at the end of the last century showed significant deficiencies in esthetics and wear; they were replaced by ceramics and, currently, by zirconia, [6,7,8,9] with different mechanical characteristics
Our study has aimed to show, using dynamic 3D finite element analysis (3D finite element analysis (FEA)), the dynamic impact forces related to oral function
Summary
Implant-supported prostheses are widely used for the rehabilitation of partially and fully edentulous patients. This type of treatment has undergone significant changes in the choice of materials since the first treatments carried out by Brånemark. The use of gold or gold alloys, with and without resin veneering [1,2], has been discarded for economic, esthetic, and functional reasons [3,4,5]. The composites and resins used at the end of the last century showed significant deficiencies in esthetics and wear; they were replaced by ceramics and, currently, by zirconia, [6,7,8,9] with different mechanical characteristics. The choice of the material used for implant-supported prosthesis manufacturing is a crucial issue due to the dynamic characteristics of the stomatognathic system
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