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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Dental Materials; v. 37, n. 12, p. 1873-1883, DEC 2021.
• Citações Web of Science: 0

Resumo

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)

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• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
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