Artificial Aging of Zr-based Dental Materials - A Pilot Study

Regina da Conceição Corredeira Monteiro; Francisco Manuel Braz Fernandes; João Pedro Botelho Veiga

Artificial Aging of Zr-based Dental Materials - A Pilot Study

Regina da Conceição Corredeira Monteiro, Francisco Manuel Braz Fernandes, João Pedro Botelho Veiga

DCM - Departamento de Ciência dos Materiais

Research output: Other contribution

Abstract

To study the effect of accelerated aging on zirconia-based (Zr) dental materials. Methods: Discs (d=13.0mm; h=1.2±0.2mm) were prepared from three Zr materials and sintered as per manufacturers' instructions: (1) IPS e.max ZirCAD (IPS), Ivoclar Vivadent; (2) LAVA, 3MESPE; (3) NanoZR (Matsushita Electric Works). Specimens were aged at 134oC under 2 bar for 5h (Chevalier et al., 2007). Control disks were left in distilled water. Specimens were analyzed with XRD and FRX-WDS. The XRD patterns were recorded on a Rigaku Dmax III-C 3kW diffractometer, using CuKa radiation at 40 kV and 30mA settings in the 2θ range from 20 to 65o. The crystalline phases were identified by comparing the peak positions and intensities with those listed in the JCPDS files. For elemental analysis a Panalytical XRF-WDS 4 kW AXIOS sequential spectrometer (Rh X-ray tube) under He flow was used. Standardless semi-quantitative analysis was performed using the SuperQ IQ+ software package.

Original language	Unknown
Volume	89
Publication status	Published - 1 Jan 2010

Cite this

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title = "Artificial Aging of Zr-based Dental Materials - A Pilot Study",

abstract = "To study the effect of accelerated aging on zirconia-based (Zr) dental materials. Methods: Discs (d=13.0mm; h=1.2±0.2mm) were prepared from three Zr materials and sintered as per manufacturers' instructions: (1) IPS e.max ZirCAD (IPS), Ivoclar Vivadent; (2) LAVA, 3MESPE; (3) NanoZR (Matsushita Electric Works). Specimens were aged at 134oC under 2 bar for 5h (Chevalier et al., 2007). Control disks were left in distilled water. Specimens were analyzed with XRD and FRX-WDS. The XRD patterns were recorded on a Rigaku Dmax III-C 3kW diffractometer, using CuKa radiation at 40 kV and 30mA settings in the 2θ range from 20 to 65o. The crystalline phases were identified by comparing the peak positions and intensities with those listed in the JCPDS files. For elemental analysis a Panalytical XRF-WDS 4 kW AXIOS sequential spectrometer (Rh X-ray tube) under He flow was used. Standardless semi-quantitative analysis was performed using the SuperQ IQ+ software package.",

keywords = "XRD, dental materials",

author = "Monteiro, {Regina da Concei{\c c}{\~a}o Corredeira} and {Braz Fernandes}, {Francisco Manuel} and Veiga, {Jo{\~a}o Pedro Botelho}",

year = "2010",

month = jan,

day = "1",

language = "Unknown",

volume = "89",

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TY - GEN

T1 - Artificial Aging of Zr-based Dental Materials - A Pilot Study

AU - Monteiro, Regina da Conceição Corredeira

AU - Braz Fernandes, Francisco Manuel

AU - Veiga, João Pedro Botelho

PY - 2010/1/1

Y1 - 2010/1/1

N2 - To study the effect of accelerated aging on zirconia-based (Zr) dental materials. Methods: Discs (d=13.0mm; h=1.2±0.2mm) were prepared from three Zr materials and sintered as per manufacturers' instructions: (1) IPS e.max ZirCAD (IPS), Ivoclar Vivadent; (2) LAVA, 3MESPE; (3) NanoZR (Matsushita Electric Works). Specimens were aged at 134oC under 2 bar for 5h (Chevalier et al., 2007). Control disks were left in distilled water. Specimens were analyzed with XRD and FRX-WDS. The XRD patterns were recorded on a Rigaku Dmax III-C 3kW diffractometer, using CuKa radiation at 40 kV and 30mA settings in the 2θ range from 20 to 65o. The crystalline phases were identified by comparing the peak positions and intensities with those listed in the JCPDS files. For elemental analysis a Panalytical XRF-WDS 4 kW AXIOS sequential spectrometer (Rh X-ray tube) under He flow was used. Standardless semi-quantitative analysis was performed using the SuperQ IQ+ software package.

AB - To study the effect of accelerated aging on zirconia-based (Zr) dental materials. Methods: Discs (d=13.0mm; h=1.2±0.2mm) were prepared from three Zr materials and sintered as per manufacturers' instructions: (1) IPS e.max ZirCAD (IPS), Ivoclar Vivadent; (2) LAVA, 3MESPE; (3) NanoZR (Matsushita Electric Works). Specimens were aged at 134oC under 2 bar for 5h (Chevalier et al., 2007). Control disks were left in distilled water. Specimens were analyzed with XRD and FRX-WDS. The XRD patterns were recorded on a Rigaku Dmax III-C 3kW diffractometer, using CuKa radiation at 40 kV and 30mA settings in the 2θ range from 20 to 65o. The crystalline phases were identified by comparing the peak positions and intensities with those listed in the JCPDS files. For elemental analysis a Panalytical XRF-WDS 4 kW AXIOS sequential spectrometer (Rh X-ray tube) under He flow was used. Standardless semi-quantitative analysis was performed using the SuperQ IQ+ software package.

KW - XRD

KW - dental materials

M3 - Other contribution

VL - 89

ER -