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The International Journal of Prosthodontics
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Int J Prosthodont 30 (2017), No. 2     21. Mar. 2017
Int J Prosthodont 30 (2017), No. 2  (21.03.2017)

Page 133-135, doi:10.11607/ijp.4994, PubMed:28267819


Cemented Single Crown Retention on Dental Implants: An In Vitro Study
Rues, Stefan / Fugina, Melissa / Rammelsberg, Peter / Kappel, Stefanie
Purpose: The aim of this study was to determine the influence of selected cements, abutment heights, and aging on the retention of zirconia crowns on zirconia abutments.
Materials and Methods: Zirconia crowns and abutments (height: 4.0 or 5.5 mm) were sandblasted and retained using five different cements. Axial pull-off tests were performed after thermocycling or 3 days of water storage.
Results: An increase in abutment height was associated with an increase in decementation force when permanent cementation was tested. The aging protocol showed that temporarily cemented crowns showed a significant retention decrease, while use of a permanent cement led to a moderate increase.
Conclusion: Only use of permanent cements ensures clinically adequate decementation forces.