Comparative Analysis of Stress and Deformation between One-Fenced and Three-Fenced Dental Implants Using Finite Element Analysis

• Main Authors: Chia-Hsuan Lee, Arvind Mukundan, Szu-Chien Chang, Yin-Lai Wang, Shu-Hao Lu, Yu-Cheng Huang, Hsiang-Chen Wang
• Format: Article
• Language: English
• Published: MDPI AG 2021-09-01
• Series: Journal of Clinical Medicine
• Subjects: All-on-4; finite element analysis; cancellous bone; cortical bone; von mises stress; static structural deformation
• Online Access: https://www.mdpi.com/2077-0383/10/17/3986

Finite element analysis (FEA) has always been an important tool in studying the influences of stress and deformation due to various loads on implants to the surrounding jaws. This study assessed the influence of two different types of dental implant model on stress dissipation in adjoining jaws and on the implant itself by utilizing FEA. This analysis aimed to examine the effects of increasing the number of fences along the implant and to compare the resulting stress distribution and deformation with surrounding bones. When a vertical force of 100 N was applied, the largest displacements found in the three-fenced and single-fenced models were 1.7469 and 2.5267, respectively, showing a drop of 30.8623%. The maximum stress found in the three-fenced and one-fenced models was 13.518 and 22.365 MPa, respectively, showing a drop of 39.557%. Moreover, when an oblique force at 35° was applied, a significant increase in deformation and stress was observed. However, the three-fenced model still had less stress and deformation compared with the single-fenced model. The FEA results suggested that as the number of fences increases, the stress dissipation increases, whereas deformation decreases considerably.