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VOLUME 22 , ISSUE 4 ( April, 2021 ) > List of Articles

ORIGINAL RESEARCH

Characterization of the Interface of Heat-pressed Glass–Ceramic Masses on Metal Support Cr–Co in Metal–Ceramic Prosthetic Restorations

Panagiotis Galiatsatos, Aristidis Galiatsatos, Gerasimos Phillipatos

Keywords : Ceramic pressed to metal, Dental ceramics, Metal–ceramic restorations, PoM technique, Scanning microscopy

Citation Information :

DOI: 10.5005/jp-journals-10024-3078

License: CC BY-NC 4.0

Published Online: 00-04-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim and objective: The aim and objective of this study is to evaluate the interface between heat-pressed glass–ceramic masses on a Cr–Co metal substrate using a scanning electron microscope and an X-ray energy dispersion spectrometer. Materials and methods: A pressed porcelain–leucite-based ceramic (IPS InLine press-on-metal (PoM); Ivoclar Vivadent AG) was used. Three cylindrical metal specimens cast (diameter 5 mm, height 1.5 mm) in Co–Cr alloy and covered with pressed ceramic (height 1.5 mm), according to the instructions of the manufacturer. All the specimens were covered with conductive carbon and then examined with a scanning electron microscope. The interface areas were studied using projections from an ETD secondary emission detector and a reversing atomic SSD contrast beam at a magnification of 1200× and 2000×, with a voltage 25 kV acceleration and 110 mA climb current. The elemental analysis was done with genesis 3.5 software, without the use of templates. Surface mapping areas and linear line scan projections of elemental distributions during the interface were recorded. Results: The distribution of specific elements in the ceramic coating concludes the existence of ion diffusion from one side of the interface to the other, which leads to an initial conclusion of the development of primary bonds with oxygen bridges. Also, in the interface, there are ledges of the mass of opaquer on the metal substrate, which results in the creation of a mechanical bond. Therefore, the adhesive mechanism must be due to both micromechanical retention and wetting phenomena and is similar to the conventional layering technique. Conclusion: The PoM technique can be used as an alternative fabrication method for metal–ceramic restorations. Factors, such as material composition and properties, firing temperatures, cooling rates, operator\'s skill, porosities, and fabrication process, may affect the quality and strength of the bond between the core and the veneering materials. Clinical significance: The PoM technique can be used as an alternative fabrication method for metal–ceramic restorations.


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  1. Schweitzer DM, Goldstein GR, Ricci JL, et al. Comparison of bond strength of a pressed ceramic fused to metal versus feldspathic porcelain fused to metal. J Prosthodont 2005;14(4): 239–247. DOI: 10.1111/j.1532-849X.2005.00052.x.
  2. Farzin M, Khaledi AK, Malekpour B, et al. Evaluation of bond strength of pressed and layered veneering ceramics to nickel-chromium alloy. J Dent Shiraz Univ Med Sci 2015;16(3 Suppl):230–236. PMID: 26535402.
  3. Merlati G, Salvi R, Sebastiani M, et al. Fracture toughness of different zirconia cores and veneered or heat-pressed ceramic layers. Dent Mater 2011;27(1). DOI : 10.1016/j.dental.2011.08.558.
  4. Salvi R, Merlati G, Battaini P, et al. FIB/SEM analysis of metal-and zirconia-ceramic interfaces. Dent Mater 2010;26(1):e59. DOI : 10.1016/j. dental. 2010.08.134.
  5. Marques de Melo R, Travassos AC, Neisser MP. Shear bond strengths of a ceramic system to alternative metal alloys. J Prosthet Dent 2005;93:64–69. DOI: 10.1016/j.prosdent.2004.10.017.
  6. Venkatachalam B, Goldstein GR, Pines MS, et al. Ceramic pressed to metal versus feldspathic porcelain fused to metal: a comparative study of bond strength. Int J Prosthodont 2009;22(1):94–100. PMID: 19260436.
  7. Henriques B, Soares D, Silva FS. Shear bond strength of a hot pressed Au-Pd-Pt alloy-porcelain dental composite. J Mech Behav Biomed Mater 2011;4(8):1718–1726. DOI: 10.1016/j.jmbbm.2011.05.029.
  8. Cesar PF, Soki FN, Yoshimura N, et al. Influence of leucite content on slow crack growth of dental porcelains. Dent Mater 2008;24(8):1114–1122. DOI: 10.1016/j.dental.2008.01.003.
  9. Mackert JR, Butts MB, Beaudreau GM, et al. Ultra thinning dental porcelain for transmitted light microscopy. J Dent Res 1985;64(9):1170–1175. DOI: 10.1177/00220345850640091601.
  10. Barreiro MM, Riesgo O, Vicente EE. Phase identification in dental porcelains for ceramo-metallic restorations. Dent Mater 1989;5(1):51–57. DOI: 10.1016/0109-5641(89)90094-8.
  11. Kontonasaki E, Kantiranis N, Papadopoulou L, et al. Microstructural characterization and comparative evaluation of physical, mechanical and biological properties of three ceramics for metal-ceramic restorations. Dent Mater 2008;24(10):1362–1373. DOI: 10.1016/j.dental.2008.03.002.
  12. Alpizar M, Castillo R, Chine B. Thermal stress analysis by finite elements of a metal-ceramic dental bridge during the cooling phase of a glaze treatment. J Mech Behav Biomed Mater 2020;104:103661. DOI: 10.1016/j.jmbbm.2020.103661.
  13. Dong JK, Luthy H, Wohlwend A, et al. Heat-pressed ceramics: technology and strength. Int J Prosthodont 1992;5(1):9–16. PMID: 1520450.
  14. Yang CC, Liu YC, Yan M. Bond strength of ceramics heat-pressed onto three dental alloys. J Prosthet Dent 2019;121(5):867.e1–867.e5. DOI: 10.1016/j.prosdent.2019.02.018.
  15. De Melo RM, Travassos AC, Neisser MP. Shear bond strengths of ceramic system to alternative metal alloys. J Prosthet Dent 2005;93(1):64–69. DOI: 10.1016/j.prosdent.2004.10.017.
  16. Ishibe M, Raigrodski Aj, Flinn BD, et al. Shear bond strengths of pressed and layered veneering ceramics to high-noble alloy and zirconia cores. J Prosthet Dent 2011;106(1):29–37. DOI: 10.1016/S0022- 3913(11)60090-5.
  17. Henriques B, Faria S, Soares D, et al. Hot pressing effect on the shear bond strength of dental porcelain to Co Cr Mo Si alloy substrates with different surface treatments. Mater Sci Eng 2013;33(1):557–563. DOI: 10.1016/j.msec.2012.10.001.
  18. Fahmy NZ, Salah E. An in vitro assessment of a ceramic-pressedto- metal system as an alternative to conventional metal ceramic systems. J Prosthodont 2011;20(8): 621–627. DOI: 10.1111/j.1532- 849X.2011.00767.x.
  19. Ivoclar – Vivadent. Scientific documentation IPS InLine system. October 2010.
  20. Galiatsatos AA, Galiatsatos AP. Clinical evaluation of fractured metal-ceramic fixed dental prostheses repaired with indirect technique. Quintessence Int 2015;46(3):229–236. DOI: 10.3290/j. qi.a33179.
  21. De Backer H, Van Maele G, De Moor N, et al. Long-term results of short-span versus long-span fixed dental prostheses: an up to 20-year retrospective study. Int J Prosthodont 2008;21(1):75–85. PMID: 18350953.
  22. Walton TR. An up to 15-year longitudinal study of 515 metal-ceramic FPDs: Part 1. Outcome. Int J Prosthodont 2002;15(5):439–445. PMID: 12375457.
  23. Ozcan M. Fracture reasons in ceramic-fused-to-metal restorations. J Oral Rehabil 2003;30(3):265–269. DOI: 10.1046/j.1365- 2842.2003.01038.x.
  24. Kelly JR. Dental ceramics: current thinking and trends. Dent Clin North Am 2004;48(2):513–530. DOI: 10.1016/j.cden.2004.01.003.
  25. Richerson DW. Modern ceramic engineering. New York: Marcel Decker Inc.; 1982. p. 101–108.
  26. Varol S, Kulak-Ozkan Y. In vitro comparison of marginal and internal fit of press-on-metal ceramic (PoM) restorations with zirconiumsupported and conventional metal ceramic fixed partial dentures before and after veneering. J Prosthodont 2015;24(5): 387–393. DOI: 10.1111/jopr.12229.
  27. Khmaj MR, Khmaj AB, Brantley WA, et al. Comparison of the metalto- ceramic bond strengths of four noble alloys with press-onmetal and conventional porcelain layering techniques. J Prosthet Dent 2014;112(5):1194–1200. DOI: 10.1016/j.prosdent.2014.06.004.
  28. Holden JE, Goldstein GR, Hittelman EL, et al. Comparison of the marginal fit of pressable ceramic to metal ceramic restorations. J Prosthodont 2009;18(8):645–648. DOI: 10.1111/j .1532- 849X.2009.00497.x.
  29. Goldin EB, Boyd NW, Goldstein GR, et al. Marginal fit of leuciteglass pressable ceramic restorations and ceramic-pressed-to-metal restorations. J Prosthet Dent 2005;93(2):143–147. DOI: 10.1016/j. prosdent.2004.10.023.
  30. Lee JH. An accelerated technique for a ceramic-pressed-tometal restoration with CAD/CAM technology. J Prosthet Dent 2014;112(5):1021–1023. DOI: 10.1016/j.prosdent.2014.05.015.
  31. Bayramoglu E, Kulak Ozkan Y, Yildiz C. Comparison of marginal and internal fit of press-on-metal and conventional ceramic systems for three-and four- unit implant-supported partial fixed dental prostheses: an in vitro study. J Prosthet Dent 2015;114(1):52–58. DOI: 10.1016/j.prosdent.2015.01.002.
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