Abstract
The purpose of our study was to analyze the influence of Ti-6Al-4V and Ti-15Zr dental implants, with complex implant designs, on the cortical and trabecular mandibular bone in regards to the stress value and its distribution using finite element analysis. A total of four 3D implant assemblies were modeled, each consisting of implant, abutment, abutment screw, cement layer, and ceramic crown. Implants were modeled with different macrostructure designs with focus on the main thread and microthread design as well as complex geometry details. All implants were inserted in the second molar position in the mandible bone section, consisting of two macro-structures, a 2 mm thick cortical bone and an internal cancellous bone. Results revealed that small variations in the implant design led to a great difference in the stress values and distribution in both cortical and cancellous bone. Our results suggest no major difference between Ti-6Al-4V and Ti-15Zr in regards to the material�s ability to decrease stress in the periimplant bone. However, within the same material, results revealed important differences between thread design and implant geometry concerning the stress values and stress concentration in cortical and cancellous bone in the mandibular model.
Highlights
Dental implants have been widely used in oral rehabilitation of completely or partially edentulous patients
The elasticity of material is believed to play an important role in reducing stress in the periimplant bone and contributing to reducing marginal bone loss which is associated to high stress concentration at crestal bone level [9]
The purpose of our study was to analyze the influence of Ti-6Al-4V and Ti-Zr dental implants, with complex designs, on the cortical and trabecular mandibular bone in regards to the stress value and its distribution using finite element analysis
Summary
Dental implants have been widely used in oral rehabilitation of completely or partially edentulous patients. The purpose of our study was to analyze the influence of Ti-6Al-4V and Ti-Zr dental implants, with complex designs, on the cortical and trabecular mandibular bone in regards to the stress value and its distribution using finite element analysis. D consisted of a tapered implant with microthreads, triangular shape cortical region, V-shaped thread, and flat apex, 4.3 mm diameter and 11.5 mm length.
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