DOI QR코드

DOI QR Code

Influence of low temperature degradation on the bond strength and flexural Strength of veneered Zirconia(3Y-TZP)

저온열화가 도재전장 지르코니아의 결합강도와 굴곡강도에 미치는 영향

  • Lee, Jung-Hwan (Department of dental laboratory Technology, Gwang-ju Health College) ;
  • Ahn, Jae-Seok (Department of dental laboratory Technology, Gwang-ju Health College)
  • Received : 2011.08.05
  • Accepted : 2011.09.20
  • Published : 2011.09.30

Abstract

Purpose: The aim of this study was to evaluate the effect of pre-treatment of core and hydrothermal treatment on the bond strength and flexural strength of ceramic veneered zirconia. Methods: 3Y-TZP specimens(KaVo Zr, $25mm{\times}3mm{\times}1mm$)were prepared by five pre-treatment methods and divided into seven groups including control two groups, subsequently the specimens veneered with the E-MAX ceram according to manufacturer's information(total specimen thickness 1.5mm). Two groups from ceramic-zirconia specimens(n=105, n=15 per group)were assigned into two experimental fatigue conditions, namely storage in an autoclave at $134^{\circ}C$ for 5h, thermo-cycling(3,000cycles, between 5 and $55^{\circ}C$, dwell time 45s, transfer time 2s). A flexural strength test was performed in a universal testing machine(crosshead speed: 0.5mm/min). Data were statistically analyzed using one-way ANOVA and Tukey's test(${\alpha}$=0.05). Results: The ceramic-zirconia bond strength value for liner application group(LLW, $27.3{\pm}3.8$) were significantly lower than those of the pre-treatment groups($30.72{\pm}5.3$). The ceramic-zirconia bond strength and zirconia flexural strength was not affected by thermo-cycling(p>0.05), whereas it was affected by storage in an autoclave at $134^{\circ}C$ for 5h(p<0.05). Conclusion: The results indicated that the ceramic-zirconia bond strength and zirconia flexural strength was affected by low temperature degradation.

Keywords

References

  1. Aboushelib MN, Kleverlaan CJ, Feilzer AJ. Microtensile bond strength of different components of core veneered all-ceramic restorations. Part II: Zirconia veneering ceramics. Dent Mater Sep, 22⑼, 857-63, 2006. https://doi.org/10.1016/j.dental.2005.11.014
  2. Ardlin BI, Transformation-toughened zirconia for dental inlays. crowns and bridges: chemical stability and effect of low-temperature aging on flexural strength and surface structure. Dent Mater, 18, 590-595, 2002. https://doi.org/10.1016/S0109-5641(01)00095-1
  3. Chevalier J, Cales B, Drouin JM. Low-temperature aging of Y-TZP ceramics. J Am Ceram Soc, 82, 2150-2154, 1999.
  4. Chevalier J, Gremillard L, and Deville S. Low-temperature degradation of zirconia and implications for biomedical implants. Annu Rev Mater Res, 37, 1-32, 2007. https://doi.org/10.1146/annurev.matsci.37.052506.084250
  5. Chevalier J, Olagnon C, Fantozzi G. Subcritical crack propagation in 3Y-TZP ceramics: static and cyclic fatigue. J Am Ceram Soc, 82, 3129-3138, 1999.
  6. Chowdhury S, Vohra YK, Lemons JE, Ueno M, Ikeda J. Accelerating aging of zirconia femoral head implants: change of surface structure and mechanical properties. J Biomed Mater Res, 81, 486-492, 2007.
  7. Denry I, Kelly JR. State of the art of zirconia for dental applications. Dent Mater, 24, 299-307, 2008. https://doi.org/10.1016/j.dental.2007.05.007
  8. Dundar M, Ozcan M, Gokce B, Comlekoglu E, Leite F, Valandro LF. Comparison of two bond strength testing methodologies for bilayered all-ceramics. Dent Mater May, 23(5), 630-6, 2007. https://doi.org/10.1016/j.dental.2006.05.004
  9. Fahmi M, Giordano R, Porber R. Effect of Thermocycling on Veneer Porcelain Bond Strength to Zirconia. IADR General Session, July 14-17, 2010.
  10. Guazzato M, Quach L, Albakry M, Michael VS. Influence of surface and heat treatments on the flexural strength of Y-TZP dental ceramic. J Dent, 33, 1, January, 9-18, 2005. https://doi.org/10.1016/j.jdent.2004.07.001
  11. Guess PC, Kulis A, Witkowski S, Wolkewitz M, Zhang Y, Strub JR. Shear bond strengths between different zirconia cores and veneering ceramics and their susceptibility to thermocycling. Dent Mater, Nov, 24(11), 1556-67, 2008. https://doi.org/10.1016/j.dental.2008.03.028
  12. Guo X. Hydrothermal degradation mechanism of tetragonal zirconia. J Mater Sci, 36, 3737-3744, 2001. https://doi.org/10.1023/A:1017925800904
  13. Hannink RHJ, Kelly PM, Muddle BC. Transformation toughening in zirconia-containing ceramics. J Am Ceram Soc, 83, 461-487, 2000.
  14. Kohorst P, Herzog TJ, Borchers L, Stiesch-Scholz M. Load-bearing capacity of all-ceramic posterior four-unit fixed partial dentures with different zirconia frameworks. Eur J Oral Sci, 115, 161-166, 2007. https://doi.org/10.1111/j.1600-0722.2007.00429.x
  15. Kohorst P, Dittmer MP, Borchers L, Stiesch-Scholz M. Influence of cyclic fatigue in water on the load-bearing capacity of dental bridges made of zirconia. Acta Biomater 4, 1440-1447, 2008. https://doi.org/10.1016/j.actbio.2008.04.012
  16. Kosmac T, Oblak C, Jevnikar P, Funduk N, Marion L. The effect of surface grinding and sandblasting on flexural strength and reliability of Y-TPZ zirconia ceramic. Dent Mater, 15, 426-433, 1999. https://doi.org/10.1016/S0109-5641(99)00070-6
  17. Kvam K, Derand T, Austrheim EK. Fracture toughness and flexural strength of dental ceramics for titanium. Biomaterials, 16, 73-76, 1995. https://doi.org/10.1016/0142-9612(95)91099-K
  18. Lothar Borchers, Meike Stiesch, Friedrich-Wilhelm Bach, Josef-Christian Buhl, Christoph H?bsch, Tim Kellner, Philipp Kohorst and Michael Jendras Acta Biomater PMID 20656076, 2010.
  19. Michael J. Tholey, Christoph Berthold, Michael VS, Norbert T. XRD2 micro-diffraction analysis of the interface between Y-TZP and veneering porcelain: Role of application methods. Dent Mater, 26, 6, June, 545-552, 2010. https://doi.org/10.1016/j.dental.2010.02.002
  20. Papanagiotou HP, Morgano SM, Giordano RA, 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, 96, 154-164, 2006. https://doi.org/10.1016/j.prosdent.2006.08.004
  21. Payyapilly JJ, Butt DP. Kinetics of hydrothermally induced transformation of yttria partially stabilized zirconia. J Nucl Mater, 360, 92-98, 2007. https://doi.org/10.1016/j.jnucmat.2006.08.027
  22. Sato T, Shimada M. Transformation of yttriadoped tetragonal ZrO2 polycrystals by annealing in water. J Am Ceram Soc, 68, 356-359, 1985. https://doi.org/10.1111/j.1151-2916.1985.tb15239.x
  23. Schubert H, Frey F. Stability of Y-TZP during hydrothermal treatment: neutron experiments and stability considerations. J Eur Ceram Soc, 25, 1597-1602, 2005. https://doi.org/10.1016/j.jeurceramsoc.2004.03.025

Cited by

  1. 구강인기방법과 블록 종류에 따른 지르코니아 코핑의 변연적합도 비교 vol.16, pp.1, 2011, https://doi.org/10.5392/jkca.2016.16.01.151