The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
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Comparative fracture strength analysis of Lava and Digident CAD/CAM zirconia ceramic crowns

  • Kwon, Taek-Ka (Department of Dentistry, St. Catholic Hospital, Catholic University of Korea) ;
  • Pak, Hyun-Soon (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Yang, Jae-Ho (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Han, Jung-Suk (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Lee, Jai-Bong (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Kim, Sung-Hun (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University) ;
  • Yeo, In-Sung (Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University)
  • Received : 2012.10.02
  • Accepted : 2013.05.09
  • Published : 2013.05.31
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Abstract

PURPOSE. All-ceramic crowns are subject to fracture during function. To minimize this common clinical complication, zirconium oxide has been used as the framework for all-ceramic crowns. The aim of this study was to compare the fracture strengths of two computer-aided design/computer-aided manufacturing (CAD/CAM) zirconia crown systems: Lava and Digident. MATERIALS AND METHODS. Twenty Lava CAD/CAM zirconia crowns and twenty Digident CAD/CAM zirconia crowns were fabricated. A metal die was also duplicated from the original prepared tooth for fracture testing. A universal testing machine was used to determine the fracture strength of the crowns. RESULTS. The mean fracture strengths were as follows: $54.9{\pm}15.6$ N for the Lava CAD/CAM zirconia crowns and $87.0{\pm}16.0$ N for the Digident CAD/CAM zirconia crowns. The difference between the mean fracture strengths of the Lava and Digident crowns was statistically significant (P<.001). Lava CAD/CAM zirconia crowns showed a complete fracture of both the veneering porcelain and the core whereas the Digident CAD/CAM zirconia crowns showed fracture only of the veneering porcelain. CONCLUSION. The fracture strengths of CAD/CAM zirconia crowns differ depending on the compatibility of the core material and the veneering porcelain.

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References

  1. Ku CW, Park SW, Yang HS. Comparison of the fracture strengths of metal-ceramic crowns and three ceromer crowns. J Prosthet Dent 2002;88:170-175. https://doi.org/10.1067/mpr.2002.127712
  2. Zahran M, El-Mowafy O, Tam L, Watson PA, Finer Y. Fracture strength and fatigue resistance of all-ceramic molar crowns manufactured with CAD/CAM technology. J Prosthodont 2008;17:370-377. https://doi.org/10.1111/j.1532-849X.2008.00305.x
  3. Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics. St. Louis; Mosby; 2001. p. 262-271.
  4. Sjögren G, Sletten G, Dahl JE. Cytotoxicity of dental alloys, metals, and ceramics assessed by millipore filter, agar overlay, and MTT tests. J Prosthet Dent 2000;84:229-236. https://doi.org/10.1067/mpr.2000.107227
  5. Siervo S, Pampalone A, Siervo P, Siervo R. Where is the gap? Machinable ceramic systems and conventional laboratory restorations at a glance. Quintessence Int 1994;25:773-779.
  6. Drummond JL. Ceramic behavior under different environmental and loading conditions. In: Eliades G, Eliades T, Brantley WA, Watts DC, editors. Dental materials in vivo: aging and related phenomena. Chicago; Quintessence; 2003. p. 35-45.
  7. Rosenstiel SF, Land MF, Fujimoto J. Contemporary fixed prosthodontics. St. Louis; Mosby; 2001. p. 643-672.
  8. Evans AG. Slow crack growth in brittle materials under dynamic loading conditions. Int J Fract 1974;10:251-259. https://doi.org/10.1007/BF00113930
  9. Evans AG, Johnson H. The Fracture stress and its dependence on slow crack growth. J Mater Sci 1975;10:214-222. https://doi.org/10.1007/BF00540345
  10. Goodacre CJ, Bernal G, Rungcharassaeng K, Kan JY. Clinical complications in fixed prosthodontics. J Prosthet Dent 2003; 90:31-41. https://doi.org/10.1016/S0022-3913(03)00214-2
  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, Ringer SP, Swain MV. Strength, fracture toughness and microstructure of a selection of allceramic materials. Part II. Zirconia-based dental ceramics. Dent Mater 2004;20:449-456. https://doi.org/10.1016/j.dental.2003.05.002
  13. Steger T. Digident CAD/CAM production--growing with the possibilities. Int J Comput Dent 2004;7:77-84.
  14. Piwowarczyk A, Ottl P, Lauer HC, Kuretzky T. A clinical report and overview of scientific studies and clinical procedures conducted on the 3M ESPE Lava All-Ceramic System. J Prosthodont 2005;14:39-45. https://doi.org/10.1111/j.1532-849X.2005.00003.x
  15. White SN, Miklus VG, McLaren EA, Lang LA, Caputo AA. Flexural strength of a layered zirconia and porcelain dental all-ceramic system. J Prosthet Dent 2005;94:125-131. https://doi.org/10.1016/j.prosdent.2005.05.007
  16. Luthardt RG, Sandkuhl O, Reitz B. Zirconia-TZP and alumina-- advanced technologies for the manufacturing of single crowns. Eur J Prosthodont Restor Dent 1999;7:113-119.
  17. Snyder MD, Hogg KD. Load-to-fracture value of different all-ceramic crown systems. J Contemp Dent Pract 2005;6:54-63
  18. Sundh A, Sjögren G. A comparison of fracture strength of yttrium-oxide-partially-stabilized zirconia ceramic crowns with varying core thickness, shapes and veneer ceramics. J Oral Rehabil 2004;31:682-688. https://doi.org/10.1111/j.1365-2842.2004.01284.x
  19. Vult von Steyern P, Ebbesson S, Holmgren J, Haag P, Nilner K. Fracture strength of two oxide ceramic crown systems after cyclic pre-loading and thermocycling. J Oral Rehabil 2006;33:682-689. https://doi.org/10.1111/j.1365-2842.2005.01604.x
  20. Wood KC, Berzins DW, Luo Q, Thompson GA, Toth JM, Nagy WW. Resistance to fracture of two all-ceramic crown materials following endodontic access. J Prosthet Dent 2006; 95:33-41. https://doi.org/10.1016/j.prosdent.2005.11.003
  21. Kelly JR. Clinically relevant approach to failure testing of allceramic restorations. J Prosthet Dent 1999;81:652-661. https://doi.org/10.1016/S0022-3913(99)70103-4
  22. Scherrer SS, de Rijk WG. The fracture resistance of all-ceramic crowns on supporting structures with different elastic moduli. Int J Prosthodont 1993;6:462-467.
  23. Potiket N, Chiche G, Finger IM. In vitro fracture strength of teeth restored with different all-ceramic crown systems. J Prosthet Dent 2004;92:491-495. https://doi.org/10.1016/j.prosdent.2004.09.001
  24. Baldassarri M, Stappert CF, Wolff MS, Thompson VP, Zhang Y. Residual stresses in porcelain-veneered zirconia prostheses. Dent Mater 2012;28:873-879. https://doi.org/10.1016/j.dental.2012.04.019
  25. Rosentritt M, Behr M, Thaller C, Rudolph H, Feilzer A. Fracture performance of computer-aided manufactured zirconia and alloy crowns. Quintessence Int 2009;40:655-662.
  26. Beuer F, Schweiger J, Eichberger M, Kappert HF, Gernet W, Edelhoff D. High-strength CAD/CAM-fabricated veneering material sintered to zirconia copings-a new fabrication mode for all-ceramic restorations. Dent Mater 2009;25:121-128. https://doi.org/10.1016/j.dental.2008.04.019
  27. Guazzato M, Proos K, Quach L, Swain MV. Strength, reliability and mode of fracture of bilayered porcelain/zirconia (Y-TZP) dental ceramics. Biomaterials 2004;25:5045-5052. https://doi.org/10.1016/j.biomaterials.2004.02.036

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