Mechanical behavior of yttria-stabilized tetragonal zirconia polycrystalline ceramic after different zirconia surface treatments

Materials Science & Engineering. C, Materials for Biological Applications
João Luiz PozzobonLuiz Felipe Valandro

Abstract

This study investigated the effects of different zirconia surface conditioning methods on the biaxial flexure strength, surface characteristics and fractographic analysis of a Y-TZP ceramic. Disc-shaped specimens were manufactured according to ISO 6872-2008 for biaxial flexure strength testing, and then randomly assigned into seven groups (n=30). Control (CTRL): without treatment; Tribochemical silica coating (TBS): specimens were sandblasted with silica-coated aluminum oxide particles (CoJet-Sand) for 10s; Silica nanofilm (SNF): specimens were silica coated with a 5nm SiO2 nanofilm; and four protocols of low-fusing porcelain glaze (GLZ): etching with 10% hydrofluoric acid gel (HF) for 1min (GLZ1), 5min (GLZ5), 10min (GLZ10) and 15min (GLZ15). Phase transformation, roughness, micro-morphological, flexural analysis tests, and fractographic analyses were performed. X-ray diffraction (XRD) analysis showed that the TBS promoted the highest m-phase content (20.35). However, for the GLZ groups, XRD analysis was not sensitive enough to obtain an accurate reading for phase transformation. The GLZ group had the highest roughness values. The TBS group had the highest characteristic strength (1291.38MPa), followed by SNF (999.26MPa). Thes...Continue Reading

Citations

Nov 1, 2018·Brazilian Oral Research·Amanda Maria de Oliveira Dal PivaRenata Marques de Melo
Mar 10, 2018·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Amanda M O Dal PivaLuiz Felipe Valandro
Dec 6, 2018·Brazilian Dental Journal·Camila Pauleski ZucuniLuiz Felipe Valandro
Feb 7, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Yang YangJian-Guo Tan
Dec 29, 2020·Dental Materials Journal·Yoshiro FujiiTakuya Matsumoto
Mar 12, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·Alaaeldin ElraggalMoustafa Aboushelib
Mar 31, 2021·Clinical Oral Investigations·Christie M Tafur-ZeladaJúlio C M Souza
Apr 17, 2021·Dental Materials : Official Publication of the Academy of Dental Materials·V KoenigA Mainjot
May 7, 2021·Journal of the Mechanical Behavior of Biomedical Materials·Ana Carolina Cadore-RodriguesLuiz Felipe Valandro

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