Stress Analysis of All Ceramic Fixed Partial Denture by Finite Element Method

Abstract:

With attempt of using all-ceramic fixed partial denture (FPD) on posterior teeth region while the high-strength ceramics themselves cannot be guaranteed for the strength of the FPD, the length of pontic of FPD is considered to be one of the significant factors that influence the FPD strength. This study was therefore aimed to use FEA to simulate the actual laboratory test in investigating whether a 3-unit all-ceramic FPD on posterior teeth could tolerate the maximum normal bite force, which is approximately 665 N. The FPD was designed to be fabricated with In-Ceram^® zirconia and have pontic length of 11 mm. The simulation was performed using a 2-dimensional finite element analysis (FEA) on ANSYS software. Lower second premolar and second molar teeth were placed at 11 mm apart in acrylic resin block. The teeth were prepared to be abutments of FPD. The result of the FEA showed that the FPD could tolerate the force exceeded the maximum normal bite force on molar region in human. This is corresponding with the previous study performed in the laboratory presenting that the FPD can withstand the load of greater than 1000 N. As the FEA has given the relevant result to that of the laboratory test, further investigations are anticipated to be performed to achieve the optimum length of a 3-unit all-ceramic FPD on posterior teeth fabricated in various systems.

• Periodical: Applied Mechanics and Materials (Volume 709)
• Pages: 430-435
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.709.430
• Online since: December 2014
• Authors: S. Piyasin, K. Sena, N. Sukjai, W. Tipawan
• Keywords: Ceramic, Finite Element Method (FEM), FPD

References

[1] Andersson M, Razzoog M, Oden A, Hegenbarth E, Lang B. Procera: a new way to achieve an all-ceramic crown. Quintessence Int 1998; 29(5): 285-296.

[2] Craig R. Mechanical properties. In Restorative Dental Materials. 11th ed. 2002. pp.68-124.

[3] Fischer H, Weber M, Marx R. Lifetime prediction of all-ceramic bridges by computational methods. J Dent Res 2003; 82(3): 238-242.

DOI: 10.1177/154405910308200317

[4] Giordano R. Dental ceramic restorative systems. Compendium 1996; 17: 779-794.

[5] Guazzato M, Albakry M, Ringer S, Swain M. Strength, fracture toughness and microstructure of a selection of all-ceramic materials. Part II. Zirconia-based dental ceramics. Dental materials 2004a; 20: 449-456.

DOI: 10.1016/j.dental.2003.05.002

[6] Guazzato M, Proos K, Quachm L, Swain M. Strength, reliability and mode of failure of bilayered porcelain/zirconia (Y-TZP) dental ceramics. Biomaterials 2004b; 25: 5045-5052.

DOI: 10.1016/j.biomaterials.2004.02.036

[7] Heffernan M, Aquilino S, Diaz-Arnold A, Haselton D, Stanford C, Vargas M. Relative translucency of six all-ceramic systems. Part I: core materials. J Prosthet Dent 2002; 88(1): 4-9.

DOI: 10.1067/mpr.2002.126794

[8] Van Noort R. Dental ceramics. In An Introduction to Dental materials. 2nd ed. Retrieved March 5, 2004, from http: /www. elsevierinternational. com/dentistry/ chapters. cfm; 2002. pp.231-246.

[9] Kamposiora P, Papavasiliou G, Bayne S, Felton D. Stress concentration in all-ceramic posterior fixed partial dentures. Quintessence Int 1996; 27(10): 701-706.

[10] Kelly J, Tesk J, Sorensen J. Failure of all-ceramic fixed partial dentures in vitro and in vivo: analysis and modeling. J Dent Res 1995; 74(6): 1253-1258.

DOI: 10.1177/00220345950740060301

[11] Lang L, Wang R, Kang B, White S. Validation of finite element analysis in dental ceramics research. J Prosthet Dent 2001; 86(6): 650-654.

DOI: 10.1067/mpr.2001.120839

[12] Lang B, Wang R-F, Vasilic M. Finite element analysis: Load to fracture of the Procera all-ceramic bridge. [cited 2004]. Available from: http: /www. umich. edu/ ~nbumictr/Restorative-procera/allceram/allceram_bridge.

[13] McLaren E, White S. Glass-infiltrated zirconia/alumina-based ceramic for crowns and fixed partial dentures: Clinical and laboratory guidelines. Quintessence Dent Techonol 2000; 23: 63-76.

[14] O'Brien W. Dental porcelain. In Dental materials and Their selection. 3rd ed. 2002. pp.210-224.