The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Mechanical properties of zirconia after different surface treatments and repeated firings

  • Subasi, Meryem Gulce (Department of Prosthodontics, Faculty of Dentistry, Istanbul Aydin University) ;
  • Demir, Necla (Department of Prosthodontics, Faculty of Dentistry, Selcuk University) ;
  • Kara, Ozlem (Department of Prosthodontics, Faculty of Dentistry, Bezmialem Vakif University) ;
  • Ozturk, A. Nilgun (Department of Prosthodontics, Faculty of Dentistry, Selcuk University) ;
  • Ozel, Faruk (Department of Chemical Engineering, Faculty of Engineering, Selcuk University)
  • Received : 2014.05.20
  • Accepted : 2014.08.07
  • Published : 2014.12.31
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Abstract

PURPOSE. This study investigated the influence of surface conditioning procedures and repeated firings on monoclinic content and strength of zirconia before cementation. MATERIALS AND METHODS. Sintered bar-shaped zirconia specimens were subjected to no surface treatment (control), air abrasion, or grinding (n=21). Their roughness was evaluated using a profilometer, and microscope analysis was performed on one specimen of each group. Then, 2 or 10 repeated firings (n=10) were executed, the monoclinic content of specimens was analyzed by X-ray diffraction, and a three-point flexural strength test was performed. Surface roughness values were compared using one-way analysis of variance (ANOVA) and Tukey honestly significant difference (HSD) tests, the monoclinic content values were tested using Kruskal-Wallis and Mann-Whitney U tests, and the flexural strength values were tested using two-way ANOVA and Tukey HSD tests (P=.05). Spearman's correlation test was performed to define relationships among measured parameters. RESULTS. Surface-treated specimens were rougher than untreated specimens and had a higher monoclinic content (P<.005), and the relationship between roughness and monoclinic content was significant (P<.000). Neither surface treatment nor firing significantly affected the flexural strength, but Weibull analysis showed that for the air-abraded samples the characteristic strength was significantly lower after the $10^{th}$ firing than after the $2^{nd}$ firing. CONCLUSION. After firing, a negligible amount of monoclinic content remained on the zirconia surfaces, and rougher surfaces had higher monoclinic contents than untreated surfaces. Multiple firings could be performed if necessary, but the fracture probability could increase after multiple firings for rougher surfaces.

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References

  1. Denry I, Kelly JR. State of the art of zirconia for dental applications. Dent Mater 2008;24:299-307. https://doi.org/10.1016/j.dental.2007.05.007
  2. Kelly JR, Denry I. Stabilized zirconia as a structural ceramic: an overview. Dent Mater 2008;24:289-98. https://doi.org/10.1016/j.dental.2007.05.005
  3. Papanagiotou HP, Morgano SM, Giordano RA, Pober R. In vitro evaluation of low-temperature aging effects and finishing procedures on the flexural strength and structural stability of Y-TZP dental ceramics. J Prosthet Dent 2006;96:154-64. https://doi.org/10.1016/j.prosdent.2006.08.004
  4. Manicone PF, Rossi Iommetti P, Raffaelli L. An overview of zirconia ceramics: basic properties and clinical applications. J Dent 2007;35:819-26. https://doi.org/10.1016/j.jdent.2007.07.008
  5. Luthardt RG, Holzhuter M, Sandkuhl O, Herold V, Schnapp JD, Kuhlisch E, Walter M. Reliability and properties of ground Y-TZP-zirconia ceramics. J Dent Res 2002;81:487-91. https://doi.org/10.1177/154405910208100711
  6. Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials 1999;20:1-25. https://doi.org/10.1016/S0142-9612(98)00010-6
  7. Vagkopoulou T, Koutayas SO, Koidis P, Strub JR. Zirconia in dentistry: Part 1. Discovering the nature of an upcoming bioceramic. Eur J Esthet Dent 2009;4:130-51.
  8. Yamaguchi H, Ino S, Hamano N, Okada S, Teranaka T. Examination of bond strength and mechanical properties of Y-TZP zirconia ceramics with different surface modifications. Dent Mater J 2012;31:472-80. https://doi.org/10.4012/dmj.2011-237
  9. Kosmac T, Oblak C, Jevnikar P, Funduk N, Marion L. Strength and reliability of surface treated Y-TZP dental ceramics. J Biomed Mater Res 2000;53:304-13. https://doi.org/10.1002/1097-4636(2000)53:4<304::AID-JBM4>3.0.CO;2-S
  10. Curtis AR, Wright AJ, Fleming GJ. The influence of surface modification techniques on the performance of a Y-TZP dental ceramic. J Dent 2006;34:195-206. https://doi.org/10.1016/j.jdent.2005.06.006
  11. 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. https://doi.org/10.1016/j.jdent.2004.07.001
  12. Guazzato M, Albakry M, Quach L, Swain MV. Influence of grinding, sandblasting, polishing and heat treatment on the flexural strength of a glass-infiltrated alumina-reinforced dental ceramic. Biomaterials 2004;25:2153-60. https://doi.org/10.1016/j.biomaterials.2003.08.056
  13. Karakoca S, Yilmaz H. Influence of surface treatments on surface roughness, phase transformation, and biaxial flexural strength of Y-TZP ceramics. J Biomed Mater Res B Appl Biomater 2009;91:930-7.
  14. Guess PC, Zhang Y, Kim JW, Rekow ED, Thompson VP. Damage and reliability of Y-TZP after cementation surface treatment. J Dent Res 2010;89:592-6. https://doi.org/10.1177/0022034510363253
  15. Denry IL, Peacock JJ, Holloway JA. Effect of heat treatment after accelerated aging on phase transformation in 3Y-TZP. J Biomed Mater Res B Appl Biomater 2010;93:236-43.
  16. Sato H, Yamada K, Pezzotti G, Nawa M, Ban S. Mechanical properties of dental zirconia ceramics changed with sandblasting and heat treatment. Dent Mater J 2008;27:408-14. https://doi.org/10.4012/dmj.27.408
  17. Manawi M, Ozcan M, Madina M, Cura C, Valandro LF. Impact of surface finishes on the flexural strength and fracture toughness of In-Ceram Zirconia. Gen Dent 2012;60:138-42.
  18. Iseri U, Ozkurt Z, Yalniz A, Kazazoglu E. Comparison of different grinding procedures on the flexural strength of zirconia. J Prosthet Dent 2012;107:309-15. https://doi.org/10.1016/S0022-3913(12)60081-X
  19. Souza RO, Valandro LF, Melo RM, Machado JP, Bottino MA, Ozcan M. Air-particle abrasion on zirconia ceramic using different protocols: effects on biaxial flexural strength after cyclic loading, phase transformation and surface topography. J Mech Behav Biomed Mater 2013;26:155-63. https://doi.org/10.1016/j.jmbbm.2013.04.018
  20. Denry IL, Holloway JA, Tarr LA. Effect of heat treatment on microcrack healing behavior of a machinable dental ceramic. J Biomed Mater Res 1999;48:791-6. https://doi.org/10.1002/(SICI)1097-4636(1999)48:6<791::AID-JBM5>3.0.CO;2-P
  21. Garvie RC, Nicholson PS. Phase analysis in zirconia systems. J Am Ceram Soc 1972;55:303-5. https://doi.org/10.1111/j.1151-2916.1972.tb11290.x
  22. Toraya H, Yoshimura M, Somiya S. Calibration curve for quantitative analysis of the monoclinic-tetragonal ZrO2 system by X-ray diffraction. J Am Ceram Soc 1984;67:C119-21.
  23. Chintapalli RK, Marro FG, Jimenez-Pique E, Anglada M. Phase transformation and subsurface damage in 3Y-TZP after sandblasting. Dent Mater 2013;29:566-72. https://doi.org/10.1016/j.dental.2013.03.005
  24. Kosmac T, Oblak C, Jevnikar P, Funduk N, Marion L. The effect of surface grinding and sandblasting on flexural strength and reliability of Y-TZP zirconia ceramic. Dent Mater 1999;15:426-33. https://doi.org/10.1016/S0109-5641(99)00070-6
  25. Bona AD, Anusavice KJ, DeHoff PH. Weibull analysis and flexural strength of hot-pressed core and veneered ceramic structures. Dent Mater 2003;19:662-9. https://doi.org/10.1016/S0109-5641(03)00010-1
  26. Kern M, Wegner SM. Bonding to zirconia ceramic: adhesion methods and their durability. Dent Mater 1998;14:64-71. https://doi.org/10.1016/S0109-5641(98)00011-6
  27. Song JY, Park SW, Lee K, Yun KD, Lim HP. Fracture strength and microstructure of Y-TZP zirconia after different surface treatments. J Prosthet Dent 2013;110:274-80. https://doi.org/10.1016/S0022-3913(13)60376-5
  28. Monaco C, Tucci A, Esposito L, Scotti R. Microstructural changes produced by abrading Y-TZP in presintered and sintered conditions. J Dent 2013;41:121-6. https://doi.org/10.1016/j.jdent.2012.06.009
  29. Denry IL, Holloway JA. Microstructural and crystallographic surface changes after grinding zirconia-based dental ceramics. J Biomed Mater Res B Appl Biomater 2006;76:440-8.
  30. Deville S, Chevalier J, Gremillard L. Influence of surface finish and residual stresses on the ageing sensitivity of biomedical grade zirconia. Biomaterials 2006;27:2186-92. https://doi.org/10.1016/j.biomaterials.2005.11.021
  31. Mecholsky JJ Jr. Fracture mechanics principles. Dent Mater 1995;11:111-2. https://doi.org/10.1016/0109-5641(95)80044-1
  32. Seghi RR, Sorensen JA. Relative flexural strength of six new ceramic materials. Int J Prosthodont 1995;8:239-46.
  33. Guazzato M, Albakry M, Ringer SP, Swain MV. Strength, fracture toughness and microstructure of a selection of all-ceramic materials. Part II. Zirconia-based dental ceramics. Dent Mater 2004;20:449-56. https://doi.org/10.1016/j.dental.2003.05.002
  34. Curtis AR, Wright AJ, Fleming GJ. The influence of simulated masticatory loading regimes on the bi-axial flexure strength and reliability of a Y-TZP dental ceramic. J Dent 2006;34:317-25. https://doi.org/10.1016/j.jdent.2005.07.009
  35. Itinoche KM, Ozcan M, Bottino MA, Oyafuso D. Effect of mechanical cycling on the flexural strength of densely sintered ceramics. Dent Mater 2006;22:1029-34. https://doi.org/10.1016/j.dental.2005.11.025
  36. Yilmaz H, Aydin C, Gul BE. Flexural strength and fracture toughness of dental core ceramics. J Prosthet Dent 2007;98:120-8. https://doi.org/10.1016/S0022-3913(07)60045-6
  37. ISO 6872:2008. Dentistry-ceramic materials. ISO; Geneva; Switzerland, 2008.
  38. Borchers L, Stiesch M, Bach FW, Buhl JC, Hubsch C, Kellner T, Kohorst P, Jendras M. Influence of hydrothermal and mechanical conditions on the strength of zirconia. Acta Biomater 2010;6:4547-52. https://doi.org/10.1016/j.actbio.2010.07.025
  39. Oh SC, Dong JK, Luthy H, Scharer P. Strength and microstructure of IPS Empress 2 glass-ceramic after different treatments. Int J Prosthodont 2000;13:468-72.

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