Surface characterization of different surface treatments associations with plasma and bonding of Y-TZP and the ceramic

Author(s)

Bitencourt, Sandro Basso ^[1] ; dos Santos, Daniela Micheline ^[1] ; Bastos-Bitencourt, Natalia Almeida ^[2] ; Rangel, Elidiane Cipriano ^[3] ; da Cruz, Nilson Cristino ^[3] ; Bonfante, Estevam Augusto ^[4] ; De Souza, Grace Mendonca ^[5] ; Pesqueira, Aldieris Alves ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Aracatuba Sch Dent, Dept Dent Mat & Prosthodont, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Bauru Sch Dent, Dept Operat Dent Endodont & Dent Mat, Bauru, SP - Brazil

^[3] Sao Paulo State Univ UNESP, Engn Coll, Lab Technol Plasmas LaPTec, Sorocaba, SP - Brazil

^[4] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodontol, Bauru, SP - Brazil

^[5] Univ Toronto, Fac Dent, Toronto, ON - Canada

• Document type: Journal article
• Source: Dental Materials; v. 37, n. 12, p. 1873-1883, DEC 2021.
• Web of Science Citations: 0

Abstract

Objectives. To characterize the surface of zirconia (Y-TZP) submitted to different surface treat-ments (with and without plasma associations) and to evaluate the shear bond strength (SBS) between veneering ceramic (VC) and Y-TZP after different aging methods. Methods. 301 Y-TZP specimens were fabricated and distributed into 7 groups: C (control): no treatment; Al: airborne abrasion with 27 mu m Al2O3 particle; L: liner; P: plasma; Al + L: airborne + liner; Al + P: airborne + plasma; P + L: plasma + liner. The Y-TZP surface was characterized by SEM, EDS, AFM, surface profilometry, surface-free energy (SFE), and XRD. SBS between Y-TZP and VC was verified after three aging protocols: initial, after hydrothermal aging (autoclave for 5 h), or thermal fatigue (30,000 baths - 5-55 degrees C). One-(profilometry, SFE) and two-way ANOVA (SBS), and Tukey's HSD test were used. Results. For the plasma groups, a full globular surface coverage was observed (SEM, AFM). Si was found for Al, L, Al + L, and P + L. Roughness was lower for C, P, and Al + P. For SFE, the highest values were found when the liner was applied (>74.59 nm/Nm). The highest monoclinic content was observed for Al + L (6.96%) and Al + P (5.86%). For the initial period, Al and P + L presented the lowest SBS values (<5.85 MPa; P > 0.331). The highest SBS values were found for L, P, and P + L (hydrothermal aging) and for P, L, Al + L, and Al + P (thermal fatigue). Significance. Changes in Y-TZP topography and the SBS with the VC were found, according to treatments performed. Plasma treatment improved SBS and did not cause phase transformation. (C) 2021 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved. (AU)

• FAPESP's process: 18/24984-3 - Silica deposition on zirconia via room-temperature atomic layer deposition (RT-ALD): effect on bond strength to veneering ceramic
• Grantee: Sandro Basso Bitencourt
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• FAPESP's process: 16/18818-8 - Multi-User Equipment approved in grant 2012/19078-7: ElectroPuls E3000 Linear-Torsion All-Electric dynamic test instrument package
• Grantee: Estevam Augusto Bonfante
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 15/11412-3 - Analysis of the interface zirconia/coating ceramic after different surface treatments and aging, by means of structural characterization and bond strength
• Grantee: Aldiéris Alves Pesqueira
• Support Opportunities: Regular Research Grants
• FAPESP's process: 12/19078-7 - Development and processing of Al2O3-ZrO2 translucent composite for CAD/CAM monolithic prostheses: the effect of aging on biaxial flexural strength
• Grantee: Estevam Augusto Bonfante
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 17/13933-6 - Mechanical potential of the association of different treatments with plasma enchanced chemical deposition on zirconia surface
• Grantee: Sandro Basso Bitencourt
• Support Opportunities: Scholarships in Brazil - Doctorate