Comparative In Vitro Study of the Bond Strength of Composite to Carbon Fiber Versus Ceramic to Cobalt–Chromium Alloys Frameworks for Fixed Dental Prostheses

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Cascos Sánchez, Rocío and Molinero Mourelle, Pedro and Ortega Sánchez, Rocío and Agustin-Panadero, Ruben and Río Highsmith, Jaime del and Gómez Polo, Miguel Ángel (2020) Comparative In Vitro Study of the Bond Strength of Composite to Carbon Fiber Versus Ceramic to Cobalt–Chromium Alloys Frameworks for Fixed Dental Prostheses. Materials, 13 (14). p. 3173. ISSN 1996-1944

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Official URL: https://doi.org/10.3390/ma13143173




Abstract

Purpose: The aim of this comparative in vitro study was to assess the bond strength and mechanical failure of carbon-fiber-reinforced composites against cobalt–chrome structures with ceramic veneering.
Materials and methods: A total of 24 specimens (12 per group) simulating dental prosthetic frameworks were fabricated. The experimental specimens were subjected to a thermocycling aging process and to evaluate bond strength. All specimens were subjected to a three-point bending test to fracture using a universal testing machine
Results: The cobalt–chrome/ceramic group yielded a bond strength value of 21.71 ± 2.16 MPa, while the carbon-fiber-reinforced composite group showed 14.50 ± 3.50 MPa. The failure assessment reported statistical significance between groups. Although carbon-fiber-reinforced composite group showed lower bond strength values, the chipping incidence in this group was as well lower.
Conclusions: The chrome–cobalt/ceramic group showed greater bonding strength compared to the carbon-fiber-reinforced composite; most of the fractures within the cobalt–chrome/ceramic group, had no possibility of direct clinical repair.


Item Type:Article
Uncontrolled Keywords:bond strength; Co–Cr alloy; carbon fiber; metal ceramic; Fiber-reinforced composite; adhesion; three-point bend test; flexural properties
Subjects:Medical sciences > Dentistry
Medical sciences > Dentistry > Dental materials
Medical sciences > Dentistry > Dental implants
ID Code:67500
Deposited On:25 Aug 2021 08:26
Last Modified:06 Sep 2021 09:22

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