The Journal of Advanced Prosthodontics

The Korean Academy of Prosthodonitics (대한치과보철학회)
권호 표지
DOI QR코드

DOI QR Code

Sintering behavior and mechanical properties of zirconia compacts fabricated by uniaxial press forming

  • Oh, Gye-Jeong (BK21 project, School of Dentistry, Department of Prosthodontics, Chonnam National University) ;
  • Yun, Kwi-Dug (Dental Science Research Institute, Department of Prosthodontics, School of Dentistry, Chonnam National University) ;
  • Lee, Kwang-Min (Division of Materials Science and Engineering, Research Institute for Functional Surface Engineering, Chonnam National University) ;
  • Lim, Hyun-Pil (Dental Science Research Institute, Department of Prosthodontics, School of Dentistry, Chonnam National University) ;
  • Park, Sang-Won (BK21 project, School of Dentistry, Department of Prosthodontics, Chonnam National University)
  • Received : 2010.08.13
  • Accepted : 2010.09.01
  • Published : 2010.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

PURPOSE. The purpose of this study was to compare the linear sintering behavior of presintered zirconia blocks of various densities. The mechanical properties of the resulting sintered zirconia blocks were then analyzed. MATERIALS AND METHODS. Three experimental groups of dental zirconia blocks, with a different presintering density each, were designed in the present study. Kavo $Everest^{(R)}$ ZS blanks (Kavo, Biberach, Germany) were used as a control group. The experimental group blocks were fabricated from commercial yttria-stabilized tetragonal zirconia powder (KZ-3YF (SD) Type A, KCM. Corporation, Nagoya, Japan). The biaxial flexural strengths, microhardnesses, and microstructures of the sintered blocks were then investigated. The linear sintering shrinkages of blocks were calculated and compared. RESULTS. Despite their different presintered densities, the sintered blocks of the control and experimental groups showed similar mechanical properties. However, the sintered block had different linear sintering shrinkage rate depending on the density of the presintered block. As the density of the presintered block increased, the linear sintering shrinkage decreased. In the experimental blocks, the three sectioned pieces of each block showed the different linear shrinkage depending on the area. The tops of the experimental blocks showed the lowest linear sintering shrinkage, whereas the bottoms of the experimental blocks showed the highest linear sintering shrinkage. CONCLUSION. Within the limitations of this study, the density difference of the presintered zirconia block did not affect the mechanical properties of the sintered zirconia block, but affected the linear sintering shrinkage of the zirconia block.

Keywords

References

  1. Lehner CR, Scharer P. All-ceramic crowns. Curr Opin Dent 1992;2:45-52. https://doi.org/10.1016/S0959-437X(05)80320-X
  2. Bindl A,$ M\ddot{o}rmann$ WH. An up to 5-year clinical evaluation of posterior in-ceram CAD/CAM core crowns. Int J Prosthodont 2002;15:451-6.
  3. $M\ddot{o}rmann$ WH, Bindl A. All-ceramic, chair-side computeraided design/computer-aided machining restorations. Dent Clin North Am 2002;46:405-26. https://doi.org/10.1016/S0011-8532(01)00007-6
  4. Pera P, Gilodi S, Bassi F, Carossa S. In vitro marginal adaptation of alumina porcelain ceramic crowns. J Prosthet Dent 1994;72:585-90. https://doi.org/10.1016/0022-3913(94)90289-5
  5. Rinke S, $H\ddot{u}ls$ A, Jahn L. Marginal accuracy and fracture strength of conventional and copy-milled all-ceramic crowns. Int J Prosthodont 1995;8:303-10.
  6. Sulaiman F, Chai J, Jameson LM, Wozniak WT. A comparison of the marginal fit of In-Ceram, IPS Empress, and Procera crowns. Int J Prosthodont 1997;10:478-84.
  7. Marquardt P, Strub JR. Survival rates of IPS empress 2 all-ceramic crowns and fixed partial dentures: results of a 5-year prospective clinical study. Quintessence Int 2006;37:253-9.
  8. Sorensen JA, Kang SK, Torres TJ, Knode H. In-Ceram fixed partial dentures: three-year clinical trial results. J Calif Dent Assoc 1998;26:207-14.
  9. Sorensen JA, Cruz M, Mito WT, Raffeiner O, Meredith HR, Foser HP. A clinical investigation on three-unit fixed partial dentures fabricated with a lithium disilicate glass-ceramic. Pract Periodontics Aesthet Dent 1999;11:95-106.
  10. Tinschert J, Natt G, Mautsch W, Augthun M, Spiekermann H. Fracture resistance of lithium disilicate-, alumina-, and zirconiabased three-unit fixed partial dentures: a laboratory study. Int J Prosthodont 2001;14:231-8.
  11. 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
  12. Tinschert J, Zwez D, Marx R, Anusavice KJ. Structural reliability of alumina-, feldspar-, leucite-, mica- and zirconia-based ceramics. J Dent 2000;28:529-35. https://doi.org/10.1016/S0300-5712(00)00030-0
  13. Porter DL, Heuer AH. Mechanisms of toughening partially stabilized zirconia (PSZ). J Am Ceram Soc 1977;60:183-4.
  14. Cales B. Colored zirconia ceramics for dental applications. Bioceramics 1998;11:591-4.
  15. 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
  16. Garvie RC, Hannink RH, Pascoe RT. Ceramic steel? Nature 1975;258:703-4. https://doi.org/10.1038/258703a0
  17. Kitazaki H, Takahashi H, Hasegawa S, Nishimura F. Effect of amount of grinding on flexural strength of dental ceramics. J Med Dent Sci 2001;48:7-13.
  18. Chevalier J, Cales B, Drouin JM. Low-temperature aging of YTZP ceramics. J Am Ceram Soc 1999;82:2150-4.
  19. Piconi C, Maccauro G. Zirconia as a ceramic biomaterial. Biomaterials 1999;20:1-25. https://doi.org/10.1016/S0142-9612(98)00010-6
  20. Duke ES. The status of CAD/CAM in restorative dentistry. Compend Contin Educ Dent 2001;22:968-72.
  21. Suttor D, Bunke K, Hoescheler S, Hauptmann H, Hertlein G. LAVA- the system for all-ceramic ZrO2 crown and bridge frameworks. Int J Comput Dent 2001;4:195-206.
  22. Heydecke G, Butz F, Binder JR, Strub JR. Material characteristics of a novel shrinkage-free $ZrSiO_{4}$ ceramic for the fabrication of posterior crowns. Dent Mater 2007;23:785-91. https://doi.org/10.1016/j.dental.2006.06.015
  23. ISO 6872. International standard for dental ceramic. 2nd ed. 1995.
  24. Callister WD, Failure. In: Callister WD, editor. Fundamental of materials science and engineering. An integrated approach. 2nd ed. USA; John Wiley & Sons Inc; 2005. p. 282-356.
  25. $Fr\acute{e}chette$ V. Failure analysis of brittle materials. Advances in ceramics vol. 28, American Ceramic Society, Westerville, OH, 1990.
  26. Ban S, Anusavice KJ. Influence of test method on failure stress of brittle dental materials. J Dent Res 1990;69:1791-9. https://doi.org/10.1177/00220345900690120201
  27. Giordano R. Materials for chairside CAD/CAM-produced restorations. J Am Dent Assoc 2006;137:14S-21S.
  28. Zirconia-Physical and mechanical property comparison of the different types of zirconias. http://www.azom.com, 2003.

Cited by

  1. Effect of different grinding burs on the physical properties of zirconia vol.8, pp.2, 2016, https://doi.org/10.4047/jap.2016.8.2.137
  2. Evaluation of the marginal and internal gaps of three different dental prostheses: comparison of the silicone replica technique and three-dimensional superimposition analysis vol.9, pp.3, 2017, https://doi.org/10.4047/jap.2017.9.3.159
  3. Influence of the Conditioning Method for Pre-Sintered Zirconia on the Shear Bond Strength of Bilayered Porcelain/Zirconia vol.9, pp.9, 2016, https://doi.org/10.3390/ma9090765
  4. Effect of Fabrication Technique on the Marginal Discrepancy and Resistance of Lithium Disilicate Crowns: An In Vitro Study pp.1059941X, 2019, https://doi.org/10.1111/jopr.13014
  5. Evaluation of flexural strength of hipped and presintered zirconia using different estimation methods of Weibull statistics vol.10, pp.None, 2010, https://doi.org/10.1016/j.jmbbm.2012.01.020
  6. 금속염화물 착색제 침투가 정방정 지르코니아 다결정체의 색조와 강도 변화에 미치는 영향 vol.15, pp.5, 2010, https://doi.org/10.17135/jdhs.2015.15.5.577
  7. Surface Modification of High Density Ceramic Powder for Increasing Suspension Capacity in Three-Dimensional Printing Application vol.936, pp.None, 2010, https://doi.org/10.4028/www.scientific.net/msf.936.159
  8. Tribological characterization of bioactive zirconia composite layers on zirconia structures vol.44, pp.15, 2010, https://doi.org/10.1016/j.ceramint.2018.07.094
  9. Effect of veneering techniques and subsequent aging on translucency of bilayered zirconia vol.4, pp.2, 2010, https://doi.org/10.1016/j.fdj.2018.05.009
  10. Development of novel zirconia implant's materials gradated design with improved bioactive surface vol.94, pp.None, 2010, https://doi.org/10.1016/j.jmbbm.2019.02.022
  11. In vitro evaluation of tooth-colored yttria stabilized zirconia ceramics vol.9, pp.4, 2010, https://doi.org/10.1080/21870764.2021.1955491