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Minimally processed recycled yttria-stabilized tetragonal zirconia for dental applications: Effect of sintering temperature on glass infiltration.
Campos, Tiago Moreira Bastos; Dos Santos, Claudinei; Alves, Larissa Marcia Martins; Benalcazar-Jalkh, Ernesto B; Strazzi-Sahyon, Henrico Badaoui; Bergamo, Edmara T P; Tebcherani, Sérgio Mazurek; Witek, Lukasz; Coelho, Paulo G; Yamaguchi, Satoshi; Thim, Gilmar P; Bonfante, Estevam A.
Afiliación
  • Campos TMB; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil.
  • Dos Santos C; Faculty of Technology, University of Rio de Janeiro State (UERJ - FAT), Resende, RJ, Brazil.
  • Alves LMM; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil. Electronic address: larissammalves@gmail.com.
  • Benalcazar-Jalkh EB; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil.
  • Strazzi-Sahyon HB; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil.
  • Bergamo ETP; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil; Biomaterials Division, New York University College of Dentistry, New York, NY, USA.
  • Tebcherani SM; Department of Production Engineering, Federal University of Technology, Paraná, Ponta Grossa, PR, Brazil.
  • Witek L; Biomaterials Division, New York University College of Dentistry, New York, NY, USA; Department of Biomedical Engineering, NYU Tandon School of Engineering, New York University, Brooklyn, NY, USA.
  • Coelho PG; Division of Plastic Surgery, Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA; Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA.
  • Yamaguchi S; Department of Dental Biomaterials, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan.
  • Thim GP; Department of Physics, Aeronautics Technological Institute, São José Dos Campos, SP, Brazil.
  • Bonfante EA; Department of Prosthodontics and Periodontology, University of São Paulo - Bauru School of Dentistry, Bauru, SP, Brazil.
J Mech Behav Biomed Mater ; 150: 106311, 2024 02.
Article en En | MEDLINE | ID: mdl-38128470
ABSTRACT
This study aimed to develop a recycling process for the remnants of milled 3Y-TZP and enhance their properties using glass infiltration. 3Y-TZP powder was gathered from the vacuum system of CAD-CAM milling equipment, calcined and sieved (x < 75 µm). One hundred twenty discs were fabricated and pre-sintered at 1000 °C/h. These specimens were then divided into four groups, categorized by glass infiltration (non-infiltrated [Zr] or glass-infiltrated [Zr-G]) and sintering temperature (1450 °C [Zr-1450] or 1550 °C [Zr-1550]/2h). After sintering, the specimens were characterized by X-Ray Diffraction (XRD), relative density measurement, and scanning electron microscopy and energy dispersive spectroscopy (SEM-EDS). The biaxial flexural strength test was performed according to the ISO 6872 and followed by fractographic analysis. Subsequent results were analyzed using Weibull statistics. Relative density values of the sintered specimens from Zr-1450 and Zr-1550 groups were 86.7 ± 1.5% and 92.2 ± 1.7%, respectively. Particle size distribution revealed particles within the range of 0.1-100 µm. XRD analysis highlighted the presence of the ZrO2-tetragonal in both the Zr-1450 and Zr-1550 groups. Glass infiltration, however, led to the formation of the ZrO2-monoclinic of 9.84% (Zr-1450-G) and 18.34% (Zr-1550-G). SEM micrographs demonstrated similar microstructural characteristics for Zr-1450 and Zr-1550, whereas the glass-infiltrated groups exhibited comparable infiltration patterns. The highest characteristic strength was observed in the glass-infiltrated groups. Fractographic analyses suggested that fracture origins were related to defects on the tensile side, which propagated to the compression side of the samples. Both the sintering temperature and glass infiltration significantly influenced the mechanical properties of the 3Y-TZP recycled.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Circonio / Resistencia Flexional Idioma: En Revista: J Mech Behav Biomed Mater Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Circonio / Resistencia Flexional Idioma: En Revista: J Mech Behav Biomed Mater Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Países Bajos