Journal of Prosthetic Dentistry
Research and Education| Volume 123, ISSUE 6, P866-873, June 2020

A comparative study of the wear of dental alloys against monolithic zirconia

  • Min-Sang Cha
    Associate Professor, Department of Dentistry, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Republic of Korea
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  • Yoon-Hyuk Huh
    Associate Professor, Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea
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  • Lee-Ra Cho
    Professor, Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea
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  • Chan-Jin Park
    Corresponding author: Dr Chan-Jin Park, Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University, 7 Jukheon-gil, Gangneung-si, Gangwon-do 25457, REPUBLIC OF KOREA
    Professor, Department of Prosthodontics and Research Institute of Oral Science, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea
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      Statement of problem

      Materials used for dental restorations should cause wear similar to that of natural teeth. Studies on the wear of dental alloys against monolithic zirconia are lacking.


      The purpose of this in vitro study was to compare the wear of Co-Cr, gold, and Ni-Cr alloys against monolithic zirconia of different surface roughness.

      Material and methods

      Cylindrical monolithic zirconia specimens were prepared by a sintering process. Sintered zirconia was then polished to prepare 30 zirconia substrate specimens with a smooth surface (Ra<0.1 μm) and 30 with a rough surface (3.5 μm<Ra<4.5 μm). As antagonist specimens, 3 types of metal alloys (Co-Cr, gold, and Ni-Cr alloys) were used. Twenty cast crowns were prepared from each metal alloy in the shape of a maxillary premolar. For each alloy, 10 cast crowns were randomly selected to oppose the smooth-surface zirconia specimens and 10 to oppose the rough-surface zirconia specimens. A total of 6 wear test groups were formed. Wear tests were performed by using a mastication simulator at 240 000 mastication cycles. Wear on the antagonist specimens was measured by using a laser 3D scanner. After wear testing, antagonist and substrate specimens were inspected by using a scanning electron microscope (SEM). For statistical analysis of the data, the 2-way ANOVA and the Scheffé multiple comparison tests were used (α=.05).


      Of the 6 test groups, the gold alloy specimens opposed to rough-surface zirconia exhibited the most wear, while the Co-Cr alloy specimens opposed to smooth-surface zirconia exhibited the least wear (P<.05). Rough-surface monolithic zirconia caused significantly more wear of the metal alloy specimens than did smooth-surface monolithic zirconia (P<.01).


      Increased surface roughness of monolithic zirconia was associated with increased wear of the opposing dental alloy. When monolithic zirconia surface roughness was increased, wear of dental alloys increased most for gold alloys, followed by Ni-Cr, and then Co-Cr alloys.
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        • Sulong M.Z.
        • Aziz R.A.
        Wear of materials used in dentistry: a review of the literature.
        J Prosthet Dent. 1990; 63: 342-349
        • Mair L.H.
        • Stolarski T.A.
        • Lloyd C.H.
        Wear: mechanisms, manifestations and measurement. Report of a work shop.
        J Dent. 1996; 24: 141-148
        • Oh W.S.
        • Delong R.
        • Anusavice K.J.
        Factors affecting enamel and ceramic wear: a literature review.
        J Prosthet Dent. 2002; 87: 451-459
        • Palmer D.S.
        • Barco M.T.
        • Pelleu G.B.
        • McKinney J.E.
        Wear of human enamel against a commercial castable ceramic restorative material.
        J Prosthet Dent. 1991; 65: 192-195
        • Chevalier J.
        What future for zirconia as a biomaterial?.
        Biomaterials. 2006; 27: 535-543
        • Elpers M.
        • Nam D.
        • Boydston-White S.
        • Ast M.P.
        • Wright T.M.
        • Padgett D.E.
        Zirconia phase transformation, metal transfer, and surface roughness in retrieved ceramic composite femoral heads in total hip arthroplasty.
        J Arthroplasty. 2014; 29: 2219-2223
        • Cha M.S.
        • Lee S.W.
        • Huh Y.H.
        • Cho L.R.
        • Park C.J.
        Metal stain on monolithic zirconia restoration: a case report.
        J Adv Prosthodont. 2017; 9: 138-142
        • Albashaireh Z.S.
        • Ghazal M.
        • Kern M.
        Two-body wear of different ceramic materials opposed to zirconia ceramic.
        J Prosthet Dent. 2010; 104: 105-113
        • Shijo Y.
        • Shinya A.
        • Gomi H.
        • Lassila L.V.
        • Vallittu P.K.
        • Shinya A.
        Studies on mechanical strength, thermal expansion of layering porcelains to alumina and zirconia ceramic core materials.
        Dent Mater J. 2009; 28: 352-361
        • Burgess J.O.
        • Janyavula S.
        • Lawson N.C.
        • Lucas T.J.
        • Cakir D.
        Enamel wear opposing polished and aged zirconia.
        Oper Dent. 2014; 39: 189-194
        • Jung Y.S.
        • Lee J.W.
        • Choi Y.J.
        • Ahn J.S.
        • Shin S.W.
        • Huh J.B.
        A study on the in-vitro wear of the natural tooth structure by opposing zirconia or dental porcelain.
        J Adv Prosthodont. 2010; 2: 111-115
        • Kim M.J.
        • Oh S.H.
        • Kim J.H.
        • Ju S.W.
        • Seo D.G.
        • Jun S.H.
        • et al.
        Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains.
        J Dent. 2012; 40: 979-988
        • Amer R.
        • Kürklü D.
        • Kateeb E.
        • Seghi R.R.
        Three-body wear potential of dental yttrium-stabilized zirconia ceramic after grinding, polishing, and glazing treatments.
        J Prosthet Dent. 2014; 112: 1151-1155
        • Aldegheishem A.
        • Alfaer A.
        • Brezavšček M.
        • Vach K.
        • Eliades G.
        • Att W.
        Wear behavior of zirconia substrates against different antagonist materials.
        Int J Esthet Dent. 2015; 10: 468-485
        • Lawson N.C.
        • Janyavula S.
        • Syklawer S.
        • McLaren E.A.
        • Burgess J.O.
        Wear of enamel opposing zirconia and lithium disilicate after adjustment, polishing and glazing.
        J Dent. 2014; 42: 1586-1591
        • Mitov G.
        • Heintze S.D.
        • Walz S.
        • Woll K.
        • Muecklich F.
        • Pospiech P.
        Wear behavior of dental Y-TZP ceramic against natural enamel after different finishing procedures.
        Dent Mater. 2012; 28: 909-918
        • Luangruangrong P.
        • Cook N.B.
        • Sabrah A.H.
        • Hara A.T.
        • Bottino M.C.
        Influence of full-contour zirconia surface roughness on wear of glass-ceramics.
        J Prosthodont. 2014; 23: 198-205
        • Saiki O.
        • Koizumi H.
        • Nogawa H.
        • Hiraba H.
        • Akazawa N.
        • Matsumura H.
        Influence of ceramic surface texture on the wear of gold alloy and heat-pressed ceramics.
        Dent Mater J. 2014; 33: 865-873
        • Kanbara T.
        • Sekine H.
        • Homma S.
        • Yajima Y.
        • Yoshinari M.
        Wear behavior between zirconia and titanium as an antagonist on fixed dental prostheses.
        Biomed Mater. 2014; 9: 025005
        • Mundhe K.
        • Jain V.
        • Pruthi G.
        • Shah N.
        Clinical study to evaluate the wear of natural enamel antagonist to zirconia and metal ceramic crowns.
        J Prosthet Dent. 2015; 114: 358-363
        • Preis V.
        • Behr M.
        • Handel G.
        • Schneider-Feyrer S.
        • Hahnel S.
        • Rosentritt M.
        Wear performance of dental ceramics after grinding and polishing treatments.
        J Mech Behav Biomed Mater. 2012; 10: 13-22
        • Stober T.
        • Bermejo J.L.
        • Rammelsberg P.
        • Schmitter M.
        Enamel wear caused by monolithic zirconia crowns after 6 months of clinical use.
        J Oral Rehabil. 2014; 41: 314-322
        • Wataha J.C.
        Alloys for prosthodontic restorations.
        J Prosthet Dent. 2002; 87: 351-363
        • Preis V.
        • Schmalzbauer M.
        • Bougeard D.
        • Schneider-Feyrer S.
        • Rosentritt M.
        Surface properties of monolithic zirconia after dental adjustment treatments and in vitro wear simulation.
        J Dent. 2015; 43: 133-139
        • International Organization for Standardization
        ISO 4287:1997. Geometrical Product Specifications (GPS)–Surface texture: Profile method -- Terms, definitions and surface texture parameters.
        International Organization for Standardization, Geneva1997 (Available at:)
        • Preis V.
        • Weiser F.
        • Handel G.
        • Rosentritt M.
        Wear performance of monolithic dental ceramics with different surface treatments.
        Quintessence Int. 2013; 44: 393-405
        • Ghazal M.
        • Albashaireh Z.S.
        • Kern M.
        Wear resistance of nanofilled composite resin and feldspathic ceramic artificial teeth.
        J Prosthet Dent. 2008; 100: 441-448
        • Kern M.
        • Strub J.R.
        • Lü X.Y.
        Wear of composite resin veneering materials in a dual-axis chewing simulator.
        J Oral Rehabil. 1999; 26: 372-378
        • Watanabe I.
        • Ohkubo C.
        • Ford J.P.
        • Atsuta M.
        • Okabe T.
        Cutting efficiency of air-turbine burs on cast titanium and dental casting alloys.
        Dent Mater. 2000; 16: 420-425
        • Suh N.P.
        An overview of the delamination theory of wear.
        Wear. 1977; 44: 1-16
        • DeLong R.
        Intra-oral restorative materials wear: rethinking the current approaches: how to measure wear.
        Dent Mater. 2006; 22: 702-711
        • Mehl A.
        • Gloger W.
        • Kunzelmann K.H.
        • Hickel R.
        A new optical 3-D device for the detection of wear.
        J Dent Res. 1997; 76: 1799-1807