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The International Journal of Prosthodontics
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Int J Prosthodont 31 (2018), No. 3     8. May 2018
Int J Prosthodont 31 (2018), No. 3  (08.05.2018)

Page 208-210, doi:10.11607/ijp.5617, PubMed:29723312


Adhesive Failure of Lava Ultimate and Lithium Disilicate Crowns Bonded to Zirconia Abutments: A Prospective Within-Patient Comparison
Schepke, Ulf / Lohbauer, Ulrich / Meijer, Henny J. / Cune, Marco S.
Purpose: To demonstrate the influence of restorative material on the success of clinical bonding to zirconia.
Materials and Methods: A total of 50 participants with a single implant received screw-retained restorations; ie, Lava Ultimate (LU) crowns extraorally bonded to zirconia abutments. After 1 year, lithium disilicate (LDS) was used as an alternative restorative material. These restorations were also followed for 1 year.
Results: Forty LU restorations (80%) debonded within 1 year of clinical service, whereas no bonding failures occurred with LDS restorations.
Conclusion: The choice of restorative material for single crowns luted to zirconia implant abutments strongly influences the incidence of bonding failures.