Y-TZP surface behavior under two different milling systems and three different accelerated aging protocols

Amanda M. Dal Piva; Joao Paulo Tribst; Laisa D. Gondim; Isabella L. Ribeiro; Fernanda Campos; Anelyse Arata; Rodrigo O. Souza

doi:10.23736/S0026-4970.18.04138-9

Y-TZP surface behavior under two different milling systems and three different accelerated aging protocols

Amanda M. Dal Piva^*, Joao Paulo Tribst, Laisa D. Gondim, Isabella L. Ribeiro, Fernanda Campos, Anelyse Arata, Rodrigo O. Souza

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

BACKGROUND: To evaluate the influence of aging and milling system on zirconia surface roughness (SR) and phase transformation. METHODS: Eighty crowns were divided in two groups according to yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic milling system (CAD-Neodent or MAD-Zirkonzahn). The crowns were submitted to different aging protocols (N.=10): 1) no aging; 2) autoclaving; 3) pH cycling; or 4) thermocycling. Next, the samples were submitted to an optical profilometry analysis to determine differences in the S R (um). A n X-ray diffraction analysis (XRD) was performed to quantify the percentage of monoclinic phase transformation. SR data was analyzed by two-way A NOVA (a=0.5%). RESULTS: Aging protocol (P=0.42) and milling system (P=0.08) had no influence on the SR. However, the number of monoclinic phases was influenced by the autoclaving and pH cycling. CONCLUSIONS: The surface roughness of zirconia-based crowns was not influenced by low temperature degradation or milling system. Regarding the phase transformation, autoclaving and pH-cycling aging presented a monoclinic phase increase when compared to the control group and thermocycled groups.

Original language	English
Pages (from-to)	234-245
Number of pages	12
Journal	Minerva stomatologica
Volume	67
Issue number	6
DOIs	https://doi.org/10.23736/S0026-4970.18.04138-9
Publication status	Published - Dec 2018

Bibliographical note

Publisher Copyright:
© 2018 EDIZIONI MINERVA MEDICA

Keywords

Dental materials
Prosthodontics
Surface properties
Yttria-stabilized tetragonal zirconia

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10.23736/S0026-4970.18.04138-9

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title = "Y-TZP surface behavior under two different milling systems and three different accelerated aging protocols",

abstract = "BACKGROUND: To evaluate the influence of aging and milling system on zirconia surface roughness (SR) and phase transformation. METHODS: Eighty crowns were divided in two groups according to yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic milling system (CAD-Neodent or MAD-Zirkonzahn). The crowns were submitted to different aging protocols (N.=10): 1) no aging; 2) autoclaving; 3) pH cycling; or 4) thermocycling. Next, the samples were submitted to an optical profilometry analysis to determine differences in the S R (um). A n X-ray diffraction analysis (XRD) was performed to quantify the percentage of monoclinic phase transformation. SR data was analyzed by two-way A NOVA (a=0.5%). RESULTS: Aging protocol (P=0.42) and milling system (P=0.08) had no influence on the SR. However, the number of monoclinic phases was influenced by the autoclaving and pH cycling. CONCLUSIONS: The surface roughness of zirconia-based crowns was not influenced by low temperature degradation or milling system. Regarding the phase transformation, autoclaving and pH-cycling aging presented a monoclinic phase increase when compared to the control group and thermocycled groups.",

keywords = "Dental materials, Prosthodontics, Surface properties, Yttria-stabilized tetragonal zirconia",

author = "{Dal Piva}, {Amanda M.} and Tribst, {Joao Paulo} and Gondim, {Laisa D.} and Ribeiro, {Isabella L.} and Fernanda Campos and Anelyse Arata and Souza, {Rodrigo O.}",

note = "Publisher Copyright: {\textcopyright} 2018 EDIZIONI MINERVA MEDICA",

year = "2018",

month = dec,

doi = "10.23736/S0026-4970.18.04138-9",

language = "English",

volume = "67",

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T1 - Y-TZP surface behavior under two different milling systems and three different accelerated aging protocols

AU - Dal Piva, Amanda M.

AU - Tribst, Joao Paulo

AU - Gondim, Laisa D.

AU - Ribeiro, Isabella L.

AU - Campos, Fernanda

AU - Arata, Anelyse

AU - Souza, Rodrigo O.

PY - 2018/12

Y1 - 2018/12

N2 - BACKGROUND: To evaluate the influence of aging and milling system on zirconia surface roughness (SR) and phase transformation. METHODS: Eighty crowns were divided in two groups according to yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic milling system (CAD-Neodent or MAD-Zirkonzahn). The crowns were submitted to different aging protocols (N.=10): 1) no aging; 2) autoclaving; 3) pH cycling; or 4) thermocycling. Next, the samples were submitted to an optical profilometry analysis to determine differences in the S R (um). A n X-ray diffraction analysis (XRD) was performed to quantify the percentage of monoclinic phase transformation. SR data was analyzed by two-way A NOVA (a=0.5%). RESULTS: Aging protocol (P=0.42) and milling system (P=0.08) had no influence on the SR. However, the number of monoclinic phases was influenced by the autoclaving and pH cycling. CONCLUSIONS: The surface roughness of zirconia-based crowns was not influenced by low temperature degradation or milling system. Regarding the phase transformation, autoclaving and pH-cycling aging presented a monoclinic phase increase when compared to the control group and thermocycled groups.

AB - BACKGROUND: To evaluate the influence of aging and milling system on zirconia surface roughness (SR) and phase transformation. METHODS: Eighty crowns were divided in two groups according to yttria-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramic milling system (CAD-Neodent or MAD-Zirkonzahn). The crowns were submitted to different aging protocols (N.=10): 1) no aging; 2) autoclaving; 3) pH cycling; or 4) thermocycling. Next, the samples were submitted to an optical profilometry analysis to determine differences in the S R (um). A n X-ray diffraction analysis (XRD) was performed to quantify the percentage of monoclinic phase transformation. SR data was analyzed by two-way A NOVA (a=0.5%). RESULTS: Aging protocol (P=0.42) and milling system (P=0.08) had no influence on the SR. However, the number of monoclinic phases was influenced by the autoclaving and pH cycling. CONCLUSIONS: The surface roughness of zirconia-based crowns was not influenced by low temperature degradation or milling system. Regarding the phase transformation, autoclaving and pH-cycling aging presented a monoclinic phase increase when compared to the control group and thermocycled groups.

KW - Dental materials

KW - Prosthodontics

KW - Surface properties

KW - Yttria-stabilized tetragonal zirconia

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ER -

Y-TZP surface behavior under two different milling systems and three different accelerated aging protocols

Abstract

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