In vitro assessment of the effect of luting agents, abutment height, and fatigue on the retention of zirconia crowns luted to titanium base implant abutments.

Autor: Strazzi-Sahyon HB; Postdoctoral Researcher, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil. Electronic address: ico_strazzi@usp.br., Bergamo ETP; Postdoctoral Researcher, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil; Postdoctoral Researcher, Biomaterials Division, New York University College of Dentistry, New York, NY., Gierthmuehlen PC; Professor, Department of Prosthodontics, School of Dentistry, Heinrich-Heine-University, Düsseldorf, Germany., Lopes ACO; Postgraduate student, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil., Alves LMM; Postdoctoral Researcher, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil., Benalcázar Jalkh EB; Postdoctoral Researcher, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil., Zahoui A; Postgraduate student, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil., Coelho PG; Professor, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL., de Carvalho AM; Postdoctoral Researcher, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil., Bonfante EA; Professor, Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of Sao Paulo (USP), São Paulo, Brazil.
Jazyk: angličtina
Zdroj: The Journal of prosthetic dentistry [J Prosthet Dent] 2023 Nov; Vol. 130 (5), pp. 739.e1-739.e8. Date of Electronic Publication: 2023 Sep 07.
DOI: 10.1016/j.prosdent.2023.07.032
Abstrakt: Statement of Problem: The bonding of implant-supported prostheses is determined by abutment material, convergence angle, height, surface treatment, and luting agents. However, studies evaluating the bonding of luting agents to titanium base abutments with different heights under fatigue conditions are scarce.
Purpose: The purpose of this in vitro study was to evaluate the retention of zirconia crowns bonded with different luting agents to titanium base abutments of different heights before and after fatigue testing.
Material and Methods: Zirconia crowns were designed, milled, and distributed into 4 experimental groups according to the luting agents (G-Multi Primer/G-Cem LinkForce [MP/GC] and Scotchbond Universal/RelyX Ultimate [SU/RU]) and titanium base abutment heights (2.5 mm and 4 mm) (n=10). Pull-out testing was performed in a universal testing machine at a crosshead speed of 1 mm/min until crown displacement. Fatigue testing was performed by an electric precision fatigue simulator (1×10 6 cycles; 100 N; and 15 Hz), followed by pull-out testing of fatigued specimens. Collected data were statistically evaluated by using a linear mixed model after post hoc comparisons by the least significant difference test (α=.05).
Results: Luting agents, abutment heights, and fatigue influenced the bonding retention of zirconia crowns to titanium base abutments. SU/RU agents promoted higher pull-out compared with MP/GC for both abutment heights before and after fatigue. Higher abutment height increased pull-out regarding lower abutment height for SU/RU materials before and after fatigue testing. Although fatigue had no significant effect on the pull-out of MP/GC, lower bond retention was observed for SU/RU after fatigue, regardless of abutment height.
Conclusions: Luting agent composition and the interaction with abutment height and fatigue influenced the retention of zirconia crowns to titanium base abutments.
(Copyright © 2023 Editorial Council for The Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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