Three-dimensional optimization and sensitivity analysis of dental implant thread parameters using finite element analysis.
10.5125/jkaoms.2018.44.2.59
- Author:
Maryam GERAMIZADEH
1
;
Hamidreza KATOOZIAN
;
Reza AMID
;
Mahdi KADKHODAZADEH
Author Information
1. Department of Biomechanical Engineering, Amirkabir University, Tehran, Iran.
- Publication Type:Original Article
- Keywords:
Dental implants;
Thread design;
Optimization;
Biomechanics;
Finite element
- MeSH:
Clothing;
Dental Implants*;
Finite Element Analysis*;
Methods
- From:Journal of the Korean Association of Oral and Maxillofacial Surgeons
2018;44(2):59-65
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVES: This study aimed to optimize the thread depth and pitch of a recently designed dental implant to provide uniform stress distribution by means of a response surface optimization method available in finite element (FE) software. The sensitivity of simulation to different mechanical parameters was also evaluated. MATERIALS AND METHODS: A three-dimensional model of a tapered dental implant with micro-threads in the upper area and V-shaped threads in the rest of the body was modeled and analyzed using finite element analysis (FEA). An axial load of 100 N was applied to the top of the implants. The model was optimized for thread depth and pitch to determine the optimal stress distribution. In this analysis, micro-threads had 0.25 to 0.3 mm depth and 0.27 to 0.33 mm pitch, and V-shaped threads had 0.405 to 0.495 mm depth and 0.66 to 0.8 mm pitch. RESULTS: The optimized depth and pitch were 0.307 and 0.286 mm for micro-threads and 0.405 and 0.808 mm for V-shaped threads, respectively. In this design, the most effective parameters on stress distribution were the depth and pitch of the micro-threads based on sensitivity analysis results. CONCLUSION: Based on the results of this study, the optimal implant design has micro-threads with 0.307 and 0.286 mm depth and pitch, respectively, in the upper area and V-shaped threads with 0.405 and 0.808 mm depth and pitch in the rest of the body. These results indicate that micro-thread parameters have a greater effect on stress and strain values.
