Analyzing the Effects of the Platform-Switching Procedure on Stresses in the Bone and Implant-Abutment Complex by 3-Dimensional Fem Analysis


Cimen H., Yengin E.

JOURNAL OF ORAL IMPLANTOLOGY, vol.38, no.1, pp.21-26, 2012 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1563/aaid-joi-d-10-00033
  • Journal Name: JOURNAL OF ORAL IMPLANTOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.21-26
  • Istanbul University Affiliated: Yes

Abstract

The purpose of this study was to investigate the effect of 2 different abutment types on the stress distribution in pen-implant bone and within the implant-abutment complex using 3-dimensional finite element analysis. A simple cylindrical implant (4 x 11 mm) was used in this study for efficacy calculation. One model simulated a 4.00-mm-diameter abutment connection, and the other was narrower, using a 3.2-mm-diameter abutment connection assuming a platform-switching configuration. The stress level in the cervical bone area at the implant was greatly reduced when the narrow-diameter abutment was connected compared with the regular-sized one, despite the fact that the stress level in the implant-abutment complex was increased. The results obtained in the platform-switching model can contribute to reduce the stress level at the implant-bone interface area. Results from this study showed the platform-switching procedure has the biomechanical advantage of shifting the stress concentration area away from the cervical bone-implant interface. The disadvantage of the configuration is the increasing stress in the abutment and implant-abutment junction.