Effect of the coefficient of friction and tightening speed on the preload induced at the dental implant complex with the finite element method

The Journal of Prosthetic Dentistry
Haddad Arabi BulaqiMojgan Paknejad

Abstract

To prevent screw loosening, a clear understanding of the factors influencing secure preload is necessary. The purpose of this study was to investigate the effect of coefficient of friction and tightening speed on screw tightening based on energy distribution method with exact geometric modeling and finite element analysis. To simulate the proper boundary conditions of the screw tightening process, the supporting bone of an implant was considered. The exact geometry of the implant complex, including the Straumann dental implant, direct crown attachment, and abutment screw were modeled with Solidworks software. Abutment screw/implant and implant/bone interfaces were designed as spiral thread helixes. The screw-tightening process was simulated with Abaqus software, and to achieve the target torque, an angular displacement was applied to the abutment screw head at different coefficients of friction and tightening speeds. The values of torque, preload, energy distribution, elastic energy, and efficiency were obtained at the target torque of 35 Ncm. Additionally, the torque distribution ratio and preload simulated values were compared to theoretically predicted values. Upon reducing the coefficient of friction and enhancing the tight...Continue Reading

References

Jun 1, 1993·Clinical Oral Implants Research·P O GlantzJ Hultén
Oct 25, 2002·The Journal of Prosthetic Dentistry·George K TzenakisVirendra B Dhuru
Nov 3, 2004·Journal of Biomechanics·Dinçer Bozkaya, Sinan Müftü
Dec 18, 2008·Journal of Applied Oral Science : Revista FOB·Rafael Augusto StükerNilza Pereira da Costa
Jan 5, 2011·Brazilian Dental Journal·Frederico NigroCarlos Eduardo Francischone
Jan 16, 2014·The Journal of Prosthetic Dentistry·Ana Paula FarinaMarcelo Ferraz Mesquita
Feb 18, 2014·The Journal of Prosthetic Dentistry·Daniela JörnLothar Borchers

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Citations

Nov 25, 2016·The Journal of Prosthetic Dentistry·Thalisson Saymo de Oliveira SilvaCarmem Dolores Vilarinho Soares de Moura
Nov 18, 2015·The Journal of Advanced Prosthodontics·Atais BacchiAloisio Oro Spazzin
Feb 18, 2020·Journal of Prosthodontic Research·Tsuyoshi KitagawaHiroshi Murakami
Aug 11, 2017·Implant Dentistry·Patricia Mitiko Asanuma HirayamaPedro Tortamano
Jan 22, 2021·The Journal of Prosthetic Dentistry·Bruna Santos Honório ToninAlex Fok

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