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http://dx.doi.org/10.14347/kadt.2020.42.2.99

A finite element stress analysis on the supporting bone and abutment screw by tightening torque of dental implant abutment screw  

Lee, Myung-Kon (Dept. of Dental Laboratory Science, College of Health Science, Catholic University of Pusan)
Publication Information
Journal of Technologic Dentistry / v.42, no.2, 2020 , pp. 99-105 More about this Journal
Abstract
Purpose: A study analysed the stress distribution of abutment screw and supporting bone of fixture by the tightening torque force of the abutment screw within clinical treatment situation for the stability of the dental implant prosthesis. Methods: The finite element analysis was targeted to the mandibular molar crown model, and the implant was internal type 4.0 mm diameter, 10.0 mm length fixture and abutment screw and supporting bone. The occlusal surface was modeled in 4 cusps and loaded 100 N to the buccal cusps. The connection between the abutment and the fixture was achieved by combining three abutment tightening torque forces of 20, 25, and 30 Ncm. Results: The results showed that the maximum stress value of the supporting bone was found in the buccal cortical bone region of the fixture in all models. The von Mises stress value of each model showed 184.5 MPa at the 20 Ncm model, 195.3 MPa in the 25 Ncm model, and 216.5 MPa in the 30 Ncm model. The contact stress between the abutment and the abutment screw showed the stress value in the 20 Ncm model was 201.2 MPa, and the 245.5 MPa in the 25 Ncm model and 314.0 MPa in the 30 Ncm model. Conclusion: The increase of tightening force within the clinical range of the abutment screw of the implant dental prosthesis was found to have no problem with the stability of the supporting bone and the abutment screw.
Keywords
Abutment screw; Tightening torque; Supporting bone stress; Fininte element method;
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Times Cited By KSCI : 5  (Citation Analysis)
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1 Alkan I, Sertgoz A, Bulent E. Influence of occlusal forces on stress distribution in preload dental implant screws. J Prosthet Dent, 91(4), 319-325, 2004.   DOI
2 Guda T, Ross TA, Lang LA, Millwater HR. Probabilistic analysis of preload in the abutment screw of a dental implant complex. J Prosthet Dent, 100(3), 183-193, 2008.   DOI
3 Joo YH, Lee JH. A study on accuracy and application of the implant torque controller usec in dental clinic. J Kor Acad Prosthodont, (49)3, 197-204, 2011.   DOI
4 Kim DS, Lee SH, Her SB, Rhee SH, Yang HC. The effect of cyclic loading on the removal torque between various implant-abutment system. Korean J Dent Mater, 38(3), 197-208, 2011.
5 Kim JM. A study of screw loosening after dynamic contious fatigue test of several abutment screw. Graduate School of Seoul University, Master's thesis, 2003.
6 Kim NS, Lee MK, Hong MH. A finite element stress analysis of abutment screw according to the implant abutment material. J Kor Acad Dent Tech, 38(1), 1-6, 2016.   DOI
7 Lang LA, Kang B, Wang R-F, Lang BR. Finite element analysis to determine implant preload. J Prosthet Dent, 90(6), 539-546, 2003.   DOI
8 Lang LA, Wang R-F, Wang BS, May KB. The Influence of abutment screw tightening on screw joint configuration. J Prosthet Dent, 87(1), 74-79, 2002.   DOI
9 Lee BH, Chun HJ, Lee SH, Han CH. Threedimensional finite element analysis of stress distribution and preload of different connection types implant with initial clamping. J Kor Acad Prosthodont, 44(2), 197-206, 2006.
10 Lee BH. The study of screw loosening and stress distribution in the jaw bone of different connection types. Graduate School of Yonsei University Master's thesis, 2005.
11 Lee MK. Finite element analysis on the stress of supporting bone by diameters and lengths of dental implant fixture. J Kor Acad Dent Tech, 38(3), 151-156, 2016.   DOI
12 Lee MK, Kim KJ. Three dimensional finite element analysis of the stress on supporting bone by the abutment materials of dental implant. J Kor Acad Dent Tech, 40(1), 41-47, 2018.
13 Lee MK, Kim YJ, Kim CY. A comparative analysis of stress distribution in the implant supporting bone by occlusal loading location utilizing the finite element method. J Kor Acad Dent Tech, 27(1), 105-113, 2005.
14 Nissan J, Gross M, Shifman A, Assif D. Stress levels for well-fitting implant superstructure as a function of tightening force levels, tightening sequence, and different operators. J Prosthet Dent, 86(1), 20-23, 2001.   DOI
15 Oh DJ, Han MJ, Chung CH. Physical properties for implant abutment screw. Oral Biology Research, 29(3), 53-61, 2005.
16 Shin HM, Jeong CM, Jeon YC, Yun MJ, Yoon JH. Influence of tightening torque on implantabtument screw joint stability. J Kor Acad Prosthodont, 46(4), 396-408, 2008.
17 Xia D, Lin H, Yuan S, Bai W, Zheng G. Dynamic fatigue performance of implant-abutment assemblies with different tightening torque values. Biomed Mater Eng, 24(6), 2143-2149, 2014.
18 Son SS, Kim YJ, Lee MK. Finite element analysis of sress distribution on supporting bone of posterior implant partial denture by loading location. J Kor Aca Dent Tech, 29(1) 93-101, 2007.