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Published on: December 20, 2024
Finite Element Analysis of Dental Implants with Zirconia Crown Restorations: Conventional Cement-Retained vs.
Jae-Hyun Lee1, Ho Yeol Jang2, Su Young Lee3
1Department of Prosthodontics and Dental Research Institute, School of Dentistry, Seoul National University, 101, Daehak-ro, Jongro-gu, Seoul 03080, Korea.
Abstract:
The present study was designed to compare the stress distributions in two restoration types of implants and the surrounding bone. The first restoration type was a conventional cement-retained zirconia crown, and the second was a novel cementless screw-retained zirconia crown with a base abutment. A three-dimensional finite element method was used to model the implants, restorations, and supporting bone. A comparative study of the two implants was performed under two masticatory loads: a vertical load of 100 N and a 30-degree oblique load of 100 N. Under both loading conditions, the maximum von Mises stress and strain values in the implant and supporting bone were higher in the conventional cement-retained restoration model than in the cementless screw-retained model. In terms of stress distribution, the cementless screw-retained zirconia crown with base abutment may be considered a superior restoration option compared to the conventional cement-retained zirconia crown.
