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.
Keywords: Biomechanics; Dental implants; Finite element; Optimization; Thread design.
Conflict of interest statement
Conflict of Interest: No potential conflict of interest relevant to this article was reported.
Comparison of Finite Element Results With Photoelastic Stress Analysis Around Dental Implants With Different ThreadsM Geramizadeh et al. Dent Med Probl 55 (1), 17-22. PMID 30152630.Considering the stress patterns and values obtained from experimental tests of photoelasticity, the tapered implant with micro-threads in the upper area and V-shaped thre …
Static, Dynamic, and Fatigue Finite Element Analysis of Dental Implants With Different Thread DesignsM Geramizadeh et al. J Long Term Eff Med Implants 26 (4), 347-355. PMID 29199621.In this study, we aimed to design an ideal dental implant with respect to stress and strain patterns on the surrounding cortical and cancellous bones. The effects of stat …
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Influence of Micro Threads Alteration on Osseointegration and Primary Stability of Implants: An FEA and In Vivo Analysis in RabbitsR Chowdhary et al. Clin Implant Dent Relat Res 17 (3), 562-9. PMID 24034600.The effect of micro threads was prominent in the femur suggesting that micro threads promote bone formation. The stress distribution supported by the micro threads was es …
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