Comparison of the Effect of Three Abutment-implant Connections on Stress Distribution at the Internal Surface of Dental Implants: A Finite Element Analysis
نویسندگان
چکیده
Background and aims. The aim of this study was to determine the stress patterns within an implant and the effect of different types of connections on load transfer. Materials and methods. Three different types of implant-abutment connections were selected for this study. Sample A: 1.5-mm deep internal hex corresponding to a lead-in bevel; sample B: a tri-channel internal connection; and sample C: in-ternal Morse taper with 110 degrees of tapering and 6 anti-rotational grooves. Four types of loading conditions were simu-lated in a finite element model, with the maximum von Mises stress set as output variables. Results. The maximum stress concentration at the inner surface of the fixtures was higher than the stress value in bone in all of the samples. Stress values in sample B were the lowest amongst all of the models. Any alterations in the amount and direction of the 100-N axial load resulted in an increase in fixture surfaces stress. Overall, the highest amount of stress (112 MPa) was detected in sample C at the inner surface of the fixture under a non-axial load of 300 N. Conclusion. Stress concentration decreased when the internal surface area increased. Creating three or six stops in the internal surface of the fixtures resulted in a decrease in stress.
منابع مشابه
Effect of Abutment Angulation and Material on Stress and Strain Distributions in Premaxillary Bone: A Three-Dimensional Finite Element Analysis
Background and Aim: Dental implants with angled abutments are often inserted in the anterior maxillary region due to the status of the residual ridge and aesthetic considerations. The purpose of this study was to assess stress and strain distributions in the premaxillary bone around dental implants by means of finite element analysis (FEA). Materials and Methods: Four three-dimensional (3D) fi...
متن کاملEffect of Abutment Height Difference on Stress Distribution in Mandibular Overdentures: A Three-Dimensional Finite Element Analysis
Background and Aim: Implant-supported overdentures are a treatment option for edentulous patients. One of the important factors in determining the prognosis of overdenture treatment is to control the distribution of stress in the implant-bone and attachment complex. This study assessed the effect of implant abutment height difference on stress distribution in mandibular overdentures. Materials...
متن کاملEvaluating the impact of length and thread pitch on the stress distribution in dental implants and surrounding bone using finite element method
longevity of osseointegrated implants are intensely influenced by biomechanical factors. Control of these factors prevents mechanical complications, which include fracture of screws, components, or materials veneering the framework. In this study, the impact of length and threads pitch of dental implants on the stress distribution and maximum Von Mises stress in implant-abutment complex and ja...
متن کاملImmediately loaded Xive and Nisastan implants the effect of macro-design on distribution of strain in surrounding bone: A finite element analysis
Immediately loaded Xive and Nisastan implants the effect of macro-design on distribution of strain in surrounding bone: A finite element analysis Dr. A. Fazel * - Dr. SH. A. Alai ** - Dr. M. Rismanchian *** *Associate Professor of Prosthodontics Dept., Faculty of Dentistry and Dental Research Center, Tehran University / Medical Sciences. **Assistant Professor of Prosthodontics Dept., Faculty of...
متن کاملEffect of pontic width on stress distribution in abutment teeth and their supporting structures by finite element analysis
Effect of pontic width on stress distribution in abutment teeth and their supporting structures by finite element analysis Dr. J. Ghanbarzadeh* - Dr. MR. Sabooni* - Dr. M. Keshavarz** * Assistant Professor of Dental Prostheses Dept., Faculty of Dentistry, Mashhad University of Medical Sciences. ** Assistant Professor of Dental Prostheses Dept., Faculty of Dentistry, Kerman University of Medical...
متن کامل