Browse > Article
http://dx.doi.org/10.14368/jdras.2020.36.1.41

Flexural strength and reliability of highly translucent colored zirconia  

Kong, Hyun-Jun (Department of Prosthodontics, College of Dentistry, Wonkwang University)
Publication Information
Journal of Dental Rehabilitation and Applied Science / v.36, no.1, 2020 , pp. 41-47 More about this Journal
Abstract
Purpose: The purpose of this study was to evaluate the flexural strength and reliability of highly translucent colored zirconia for all ceramic restoration. Materials and Methods: Bar-shaped specimens (25 × 4 × 2.5 mm) were prepared from highly translucent monolithic zirconia. Three experimental groups were set up according to color (shade A0, A1, and A3). For each group, 20 specimens were prepared. Flexural strength was determined using a 3-point flexural test and results were analyzed with one-way ANOVA test. Weibull statistical analysis provided 2 parameter estimates: Weibull modulus and characteristic strength. X-ray diffraction (XRD) analysis was performed. Results: There was statistically significant difference between uncolored (Shade A0) and colored (shade A1 and A3) (P < 0.05), but there was no difference between colored groups (P > 0.05). The uncolored group had higher reliability compared with colored study groups. On x-ray diffraction analysis of each group, typical peaks of tetragonal phase appeared in all groups. Conclusion: Within the limitations of this in vitro study, coloring highly translucent zirconia had significant effect on flexural strength and reliability. Therefore, clinicians should be careful when using highly translucent colored zirconia to prevent breakage of veneering ceramic and enhance aesthetics.
Keywords
zirconia; translucency; color; flexural strength;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Johansson C, Kmet G, Rivera J, Larsson C, Vult Von Steyern P. Fracture strength of monolithic allceramic crowns made of high translucent yttrium oxide-stabilized zirconium dioxide compared to porcelain-veneered crowns and lithium disilicate crowns. Acta Odontol Scand 2014;72:145-53.   DOI
2 Kim HK, Kim SH. Effect of the number of coloring liquid applications on the optical properties of monolithic zirconia. Dent Mater 2014;30:229-37.
3 Inokoshi M, Shimizu H, Nozaki K, Takagaki T, Yoshihara K, Nagaoka N, Zhang F, Vleugels J, Van Meerbeek B, Minakuchi S. Crystallographic and morphological analysis of sandblasted highly translucent dental zirconia. Dent Mater 2018;34:508-18.   DOI
4 Kaya G. Production and characterization of selfcolored dental zirconia blocks. Ceram Int 2013;39:511-7.   DOI
5 Oh SC, Lee HH, Shin MR, Lee IK. Flexural strength of various colored and uncolored zirconia ceramics for all-ceramic restoration. J Dent Rehabil Appl Sci 2007;23:119-30.
6 Hjerppe J, Narhi T, Froberg K, Vallittu PK, Lassila LV. Effect of shading the zirconia framework on biaxial strength and surface microhardness. Acta Odontol Scand 2008;66:262-7.   DOI
7 Zhang F, Inokoshi M, Batuk M, Hadermann J, Naert I, Meerbeek BV, Vleugels J. Strength, toughness and aging stability of highly-translucent YTZP ceramics for dental restorations. Dent Mater 2016;32:e327-37.
8 Zhang Y. Making yttria-stabilized tetragonal zirconia translucent. Dent Mater 2014;30:1195-203.   DOI
9 International Organization for Standardization. ISO 6872:2008. Dentistry - Ceramic materials. Available from: https://www.iso.org/standard/41385.html (updated 2020 Mar 10).
10 Siarampi E, Kontonasaki E, Papadopoulou L, Kantiranis N, Zorba T, Paraskevopoulos KM, Koidis P. Flexural strength and the probability of failure of cold isostatic pressed zirconia core ceramics. J Prosthet Dent 2012;108:84-95.   DOI
11 Garcia Fonseca R, de Oliveira Abi-Rached F, dos Santos Nunes Reis JM, Rambaldi E, Baldissara P. Effect of particle size on the flexural strength and phase transformation of an airborne-particle abraded yttria-stabilized tetragonal zirconia polycrystal ceramic. J Prosthet Dent 2013;110:510-4.   DOI
12 Weibull W. A statistical distribution function of wide applicability. J Appl Mech 1951;18:293-7.   DOI
13 Ritter JE. Predicting lifetimes of materials and material structures. Dent Mater 1995;11:142-6.   DOI
14 Kittl P, Diaz G. Weibull's fracture statistics or probabilistic strength of materials: state of the art. Res Mechanica 1988;24:99-207.
15 Garvie RC, Nicholson PS. Phase analysis in zirconia systems. J Am Ceram Soc 1972;55:303-5.   DOI
16 Toraya H, Yoshimura M, Somiya S. Calibration curve for quantitative analysis of the monoclinictetragonal ZrO2 system by x-ray diffraction. J Am Ceram Soc 1984;67:119-21.
17 Guess PC, Schultheis S, Bonfante EA, Coelho PG, Ferencz JL, Silva NR. All-ceramic systems: laboratory and clinical performance. Dent Clin North Am 2011;55:333-52.   DOI
18 Haff A, Lof H, Gunne J, Sjogren G. A retrospective evaluation of zirconia-fixed partial dentures in general practices: an up to 13-year study. Dent Mater 2015;31:162-70.   DOI
19 Tong H, Tanaka CB, Kaizer MR, Zhang Y. Characterization of three commercial Y-TZP ceramics produced for their high-translucency, high-strength and high surface area. Ceram Int 2016;42:1077-85.   DOI
20 Stefanescu C, Ionita C, Nechita V, Drafta S, Oancea L, Petre A. Survival rates and complications for zirconia-based fixed dental prostheses in a period up to 10 years: a systematic review. Eur J Prosthodont Restor Dent 2018;26:54-61.
21 Ferrario VF, Sforza C, Zanotti G, Tartaglia GM. Maximal bite forces in healthy young adults as predicted by surface electromyography. J Dent 2004;32:451-7.   DOI
22 Guazzato M, Quach L, Albakry M, Swain MV. Influence of surface and heat treatments on the flexural strength of Y-TZP dental ceramic. J Dent 2005;33:9-18.   DOI
23 Spyropoulou PE, Kamposiora P, Eliades G, Papavasiliou G, Razzoog ME, Thompson JY, Smith RL, Bayne SC. Composition, phase analysis, biaxial flexural strength, and fatigue of unshaded versus shaded Procera zirconia ceramic. J Prosthet Dent 2016;116:269-76.   DOI
24 Wen N, Yi YF, Zhang WW, Deng B, Shao LQ, Dong LM, Tian JM. The color of $Fe_{2}O_{3}$ and $Bi_{2}O_{3}$ pigmented dental zirconia ceramic. Key Engineering Materials 2010;434:582-5.   DOI
25 Ozer F, Naden A, Turp V, Mante F, Sen D, Blatz MB. Effect of thickness and surface modifications on flexural strength of monolithic zirconia. J Prosthet Dent 2018;119:987-93.   DOI