Flexural resistance of Cerec CAD/CAM system ceramic blocks. Part 2: outsourcing materials

Maurizio Sedda; Alessandro Vichi; Francesco Del Siena; Chris Louca; Marco Ferrari

Flexural resistance of Cerec CAD/CAM system ceramic blocks. Part 2: outsourcing materials

Maurizio Sedda, Alessandro Vichi^*, Francesco Del Siena, Chris Louca, Marco Ferrari

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Purpose: To test different Cerec CAD/CAM system ceramic blocks, comparing mean flexural strength (σ), Weibull modulus (m), and Weibull characteristic strength (σ₀) in an ISO standardized set-up.

Methods: Following the recent ISO Standard (ISO 6872:2008), 11 types of ceramic blocks were tested: IPS e.max CAD MO, IPS e.max CAD LT and IPS e.max CAD HT (lithium disilicate glass-ceramic); In-Ceram SPINELL, In-Ceram Alumina and In-Ceram Zirconia (glass-infiltrated materials); inCoris AL and In-Ceram AL (densely sintered alumina); In-Ceram YZ, IPS e.max Zir-CAD and inCoris ZI (densely sintered zirconia). Specimens were cut out from ceramic blocks, finished, crystallized/infiltrated/sintered, polished, and tested in a three-point bending test apparatus. Flexural strength, Weibull characteristic strength, and Weibull modulus were obtained.

Results: A statistically significant difference was found (P< 0.001) among lithium disilicate glass-ceramic (σ = 272.6±376.8 MPa, m = 6.2±11.3, σ₀ = 294.0±394.1 MPa) and densely sintered alumina (σ = 441.8±541.6 MPa, m = 11.9±19.0, σ₀ = 454.2±565.2 MPa). No statistically significant difference was found (P= 0.254) in glass infiltrated materials (σ = 376.9±405.5 MPa, m = 7.5±11.5, σ₀ = 393.7±427.0 MPa). No statistically significant difference was found (P= 0.160) in densely sintered zirconia (σ = 1,060.8±1,227.8 MPa, m = 5.8±7.4, σ₀ = 1,002.4±1,171.0 MPa). Not all the materials tested fulfilled the requirements for the clinical indications recommended by the manufacturer.

Original language	English
Pages (from-to)	17-22
Number of pages	6
Journal	American Journal of Dentistry
Volume	27
Issue number	1
Publication status	Published - 1 Feb 2014

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@article{b0cc626c6eaf4758af981ff955a1b564,

title = "Flexural resistance of Cerec CAD/CAM system ceramic blocks. Part 2: outsourcing materials",

abstract = "Purpose: To test different Cerec CAD/CAM system ceramic blocks, comparing mean flexural strength (σ), Weibull modulus (m), and Weibull characteristic strength (σ0) in an ISO standardized set-up. Methods: Following the recent ISO Standard (ISO 6872:2008), 11 types of ceramic blocks were tested: IPS e.max CAD MO, IPS e.max CAD LT and IPS e.max CAD HT (lithium disilicate glass-ceramic); In-Ceram SPINELL, In-Ceram Alumina and In-Ceram Zirconia (glass-infiltrated materials); inCoris AL and In-Ceram AL (densely sintered alumina); In-Ceram YZ, IPS e.max Zir-CAD and inCoris ZI (densely sintered zirconia). Specimens were cut out from ceramic blocks, finished, crystallized/infiltrated/sintered, polished, and tested in a three-point bending test apparatus. Flexural strength, Weibull characteristic strength, and Weibull modulus were obtained. Results: A statistically significant difference was found (P< 0.001) among lithium disilicate glass-ceramic (σ = 272.6±376.8 MPa, m = 6.2±11.3, σ0 = 294.0±394.1 MPa) and densely sintered alumina (σ = 441.8±541.6 MPa, m = 11.9±19.0, σ0 = 454.2±565.2 MPa). No statistically significant difference was found (P= 0.254) in glass infiltrated materials (σ = 376.9±405.5 MPa, m = 7.5±11.5, σ0 = 393.7±427.0 MPa). No statistically significant difference was found (P= 0.160) in densely sintered zirconia (σ = 1,060.8±1,227.8 MPa, m = 5.8±7.4, σ0 = 1,002.4±1,171.0 MPa). Not all the materials tested fulfilled the requirements for the clinical indications recommended by the manufacturer.",

author = "Maurizio Sedda and Alessandro Vichi and Siena, \{Francesco Del\} and Chris Louca and Marco Ferrari",

year = "2014",

month = feb,

day = "1",

language = "English",

volume = "27",

pages = "17--22",

journal = "American Journal of Dentistry",

issn = "0894-8275",

publisher = "Mosher and Linder, Inc",

number = "1",

}

TY - JOUR

T1 - Flexural resistance of Cerec CAD/CAM system ceramic blocks. Part 2: outsourcing materials

AU - Sedda, Maurizio

AU - Vichi, Alessandro

AU - Siena, Francesco Del

AU - Louca, Chris

AU - Ferrari, Marco

PY - 2014/2/1

Y1 - 2014/2/1

N2 - Purpose: To test different Cerec CAD/CAM system ceramic blocks, comparing mean flexural strength (σ), Weibull modulus (m), and Weibull characteristic strength (σ0) in an ISO standardized set-up. Methods: Following the recent ISO Standard (ISO 6872:2008), 11 types of ceramic blocks were tested: IPS e.max CAD MO, IPS e.max CAD LT and IPS e.max CAD HT (lithium disilicate glass-ceramic); In-Ceram SPINELL, In-Ceram Alumina and In-Ceram Zirconia (glass-infiltrated materials); inCoris AL and In-Ceram AL (densely sintered alumina); In-Ceram YZ, IPS e.max Zir-CAD and inCoris ZI (densely sintered zirconia). Specimens were cut out from ceramic blocks, finished, crystallized/infiltrated/sintered, polished, and tested in a three-point bending test apparatus. Flexural strength, Weibull characteristic strength, and Weibull modulus were obtained. Results: A statistically significant difference was found (P< 0.001) among lithium disilicate glass-ceramic (σ = 272.6±376.8 MPa, m = 6.2±11.3, σ0 = 294.0±394.1 MPa) and densely sintered alumina (σ = 441.8±541.6 MPa, m = 11.9±19.0, σ0 = 454.2±565.2 MPa). No statistically significant difference was found (P= 0.254) in glass infiltrated materials (σ = 376.9±405.5 MPa, m = 7.5±11.5, σ0 = 393.7±427.0 MPa). No statistically significant difference was found (P= 0.160) in densely sintered zirconia (σ = 1,060.8±1,227.8 MPa, m = 5.8±7.4, σ0 = 1,002.4±1,171.0 MPa). Not all the materials tested fulfilled the requirements for the clinical indications recommended by the manufacturer.

AB - Purpose: To test different Cerec CAD/CAM system ceramic blocks, comparing mean flexural strength (σ), Weibull modulus (m), and Weibull characteristic strength (σ0) in an ISO standardized set-up. Methods: Following the recent ISO Standard (ISO 6872:2008), 11 types of ceramic blocks were tested: IPS e.max CAD MO, IPS e.max CAD LT and IPS e.max CAD HT (lithium disilicate glass-ceramic); In-Ceram SPINELL, In-Ceram Alumina and In-Ceram Zirconia (glass-infiltrated materials); inCoris AL and In-Ceram AL (densely sintered alumina); In-Ceram YZ, IPS e.max Zir-CAD and inCoris ZI (densely sintered zirconia). Specimens were cut out from ceramic blocks, finished, crystallized/infiltrated/sintered, polished, and tested in a three-point bending test apparatus. Flexural strength, Weibull characteristic strength, and Weibull modulus were obtained. Results: A statistically significant difference was found (P< 0.001) among lithium disilicate glass-ceramic (σ = 272.6±376.8 MPa, m = 6.2±11.3, σ0 = 294.0±394.1 MPa) and densely sintered alumina (σ = 441.8±541.6 MPa, m = 11.9±19.0, σ0 = 454.2±565.2 MPa). No statistically significant difference was found (P= 0.254) in glass infiltrated materials (σ = 376.9±405.5 MPa, m = 7.5±11.5, σ0 = 393.7±427.0 MPa). No statistically significant difference was found (P= 0.160) in densely sintered zirconia (σ = 1,060.8±1,227.8 MPa, m = 5.8±7.4, σ0 = 1,002.4±1,171.0 MPa). Not all the materials tested fulfilled the requirements for the clinical indications recommended by the manufacturer.

UR - https://www.scopus.com/pages/publications/84898855620

M3 - Article

C2 - 24902400

AN - SCOPUS:84898855620

SN - 0894-8275

VL - 27

SP - 17

EP - 22

JO - American Journal of Dentistry

JF - American Journal of Dentistry

IS - 1

ER -

Flexural resistance of Cerec CAD/CAM system ceramic blocks. Part 2: outsourcing materials

Abstract

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