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Three-dimensional finite element analysis of platform switched implant

  • Moon, Se-Young (School of Dentistry, Seoul National University) ;
  • Lim, Young-Jun (Dental Research Institute and Department of Prosthodontics, School of Dentistry, Seoul National University) ;
  • Kim, Myung-Joo (Dental Research Institute and Department of Prosthodontics, School of Dentistry, Seoul National University) ;
  • Kwon, Ho-Beom (Dental Research Institute and Department of Prosthodontics, School of Dentistry, Seoul National University)
  • Received : 2016.05.13
  • Accepted : 2016.11.17
  • Published : 2017.02.28

Abstract

PURPOSE. The purpose of this study was to analyze the influence of the platform switching concept on an implant system and peri-implant bone using three-dimensional finite element analysis. MATERIALS AND METHODS. Two three-dimensional finite element models for wide platform and platform switching were created. In the wide platform model, a wide platform abutment was connected to a wide platform implant. In the platform switching model, the wide platform abutment of the wide platform model was replaced by a regular platform abutment. A contact condition was set between the implant components. A vertical load of 300 N was applied to the crown. The maximum von Mises stress values and displacements of the two models were compared to analyze the biomechanical behavior of the models. RESULTS. In the two models, the stress was mainly concentrated at the bottom of the abutment and the top surface of the implant in both models. However, the von Mises stress values were much higher in the platform switching model in most of the components, except for the bone. The highest von Mises values and stress distribution pattern of the bone were similar in the two models. The components of the platform switching model showed greater displacement than those of the wide platform model. CONCLUSION. Due to the stress concentration generated in the implant and the prosthodontic components of the platform switched implant, the mechanical complications might occur when platform switching concept is used.

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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