Effect of in vitro aging on the flexural strength and probability to fracture of Y-TZP zirconia ceramics for all-ceramic restorations
Abstract Objectives Dental zirconia restorations should present long-term clinical survival and be in service within the oral environment for many years. However, low temperature degradation could affect their mechanical properties and survival. The aim of this study was to investigate the effect of...
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| Veröffentlicht in: | Dental materials 2014-12, Vol.30 (12), p.e306-e316 |
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| creator | Siarampi, Eleni Kontonasaki, Eleana Andrikopoulos, Konstantinos S Kantiranis, Nikolaos Voyiatzis, George A Zorba, Triantafillia Paraskevopoulos, Konstantinos M Koidis, Petros |
| description | Abstract Objectives Dental zirconia restorations should present long-term clinical survival and be in service within the oral environment for many years. However, low temperature degradation could affect their mechanical properties and survival. The aim of this study was to investigate the effect of in vitro aging on the flexural strength of yttrium-stabilized (Y-TZP) zirconia ceramics for ceramic restorations. Methods One hundred twenty bar-shaped specimens were prepared from two ceramics (ZENO Zr (WI) and IPS e.max® ZirCAD (IV)), and loaded until fracture according to ISO 6872. The specimens from each ceramic ( n x = 60) were divided in three groups (control, aged for 5 h, aged for 10 h). One-way ANOVA was used to assess statistically significant differences among flexural strength values ( P < 0.05). The variability of the flexural strength values was analyzed using the two-parameter Weibull distribution function, which was applied for the estimation of Weibull modulus ( m ) and characteristic strength ( σ0 ). The crystalline phase polymorphs of the materials (tetragonal, t , and monoclinic, m , zirconia) were investigated by X-ray diffraction (XRD) analysis, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Results A slight increase of the flexural strength after 5 h, and a decrease after 10 h of aging, was recorded for both ceramics, however statistically significant was for the WI group ( P < 0.05). Both ceramics presented a t → m phase transformation, with the m -phase increasing from 4 to 5% at 5 h to around 15% after 10 h. Significance The significant reduction of the flexural strength after 10 h of in vitro aging, suggests high fracture probability for one of the zirconia ceramics tested. |
| doi_str_mv | 10.1016/j.dental.2014.05.033 |
| format | Article |
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However, low temperature degradation could affect their mechanical properties and survival. The aim of this study was to investigate the effect of in vitro aging on the flexural strength of yttrium-stabilized (Y-TZP) zirconia ceramics for ceramic restorations. Methods One hundred twenty bar-shaped specimens were prepared from two ceramics (ZENO Zr (WI) and IPS e.max® ZirCAD (IV)), and loaded until fracture according to ISO 6872. The specimens from each ceramic ( n x = 60) were divided in three groups (control, aged for 5 h, aged for 10 h). One-way ANOVA was used to assess statistically significant differences among flexural strength values ( P < 0.05). The variability of the flexural strength values was analyzed using the two-parameter Weibull distribution function, which was applied for the estimation of Weibull modulus ( m ) and characteristic strength ( σ0 ). The crystalline phase polymorphs of the materials (tetragonal, t , and monoclinic, m , zirconia) were investigated by X-ray diffraction (XRD) analysis, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Results A slight increase of the flexural strength after 5 h, and a decrease after 10 h of aging, was recorded for both ceramics, however statistically significant was for the WI group ( P < 0.05). Both ceramics presented a t → m phase transformation, with the m -phase increasing from 4 to 5% at 5 h to around 15% after 10 h. Significance The significant reduction of the flexural strength after 10 h of in vitro aging, suggests high fracture probability for one of the zirconia ceramics tested.</description><identifier>ISSN: 0109-5641</identifier><identifier>EISSN: 1879-0097</identifier><identifier>DOI: 10.1016/j.dental.2014.05.033</identifier><identifier>PMID: 24993809</identifier><language>eng</language><publisher>England: Elsevier Ltd</publisher><subject>Advanced Basic Science ; Algorithms ; Ceramics ; Ceramics - chemistry ; Crystallography ; Dental materials ; Dental Materials - chemistry ; Dentistry ; Elastic Modulus ; Flexural strength ; Fracture mechanics ; FTIR ; In vitro aging ; In vitro testing ; Materials Testing ; Modulus of rupture in bending ; Phase transformation ; Pliability ; Probability ; RAMAN ; Restoration ; Spectroscopy, Fourier Transform Infrared ; Spectrum Analysis, Raman ; Stress, Mechanical ; Surface Properties ; Time Factors ; Weibull analysis ; X-Ray Diffraction ; XRD ; Yttrium - chemistry ; Zirconia ceramics ; Zirconium - chemistry ; Zirconium dioxide</subject><ispartof>Dental materials, 2014-12, Vol.30 (12), p.e306-e316</ispartof><rights>Academy of Dental Materials</rights><rights>2014 Academy of Dental Materials</rights><rights>Copyright © 2014 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c586t-ac79c1099bb89488a63f053e943384262f506f6f295ef937231de13c138d26343</citedby><cites>FETCH-LOGICAL-c586t-ac79c1099bb89488a63f053e943384262f506f6f295ef937231de13c138d26343</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.dental.2014.05.033$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27925,27926,45996</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24993809$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Siarampi, Eleni</creatorcontrib><creatorcontrib>Kontonasaki, Eleana</creatorcontrib><creatorcontrib>Andrikopoulos, Konstantinos S</creatorcontrib><creatorcontrib>Kantiranis, Nikolaos</creatorcontrib><creatorcontrib>Voyiatzis, George A</creatorcontrib><creatorcontrib>Zorba, Triantafillia</creatorcontrib><creatorcontrib>Paraskevopoulos, Konstantinos M</creatorcontrib><creatorcontrib>Koidis, Petros</creatorcontrib><title>Effect of in vitro aging on the flexural strength and probability to fracture of Y-TZP zirconia ceramics for all-ceramic restorations</title><title>Dental materials</title><addtitle>Dent Mater</addtitle><description>Abstract Objectives Dental zirconia restorations should present long-term clinical survival and be in service within the oral environment for many years. However, low temperature degradation could affect their mechanical properties and survival. The aim of this study was to investigate the effect of in vitro aging on the flexural strength of yttrium-stabilized (Y-TZP) zirconia ceramics for ceramic restorations. Methods One hundred twenty bar-shaped specimens were prepared from two ceramics (ZENO Zr (WI) and IPS e.max® ZirCAD (IV)), and loaded until fracture according to ISO 6872. The specimens from each ceramic ( n x = 60) were divided in three groups (control, aged for 5 h, aged for 10 h). One-way ANOVA was used to assess statistically significant differences among flexural strength values ( P < 0.05). The variability of the flexural strength values was analyzed using the two-parameter Weibull distribution function, which was applied for the estimation of Weibull modulus ( m ) and characteristic strength ( σ0 ). The crystalline phase polymorphs of the materials (tetragonal, t , and monoclinic, m , zirconia) were investigated by X-ray diffraction (XRD) analysis, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Results A slight increase of the flexural strength after 5 h, and a decrease after 10 h of aging, was recorded for both ceramics, however statistically significant was for the WI group ( P < 0.05). Both ceramics presented a t → m phase transformation, with the m -phase increasing from 4 to 5% at 5 h to around 15% after 10 h. Significance The significant reduction of the flexural strength after 10 h of in vitro aging, suggests high fracture probability for one of the zirconia ceramics tested.</description><subject>Advanced Basic Science</subject><subject>Algorithms</subject><subject>Ceramics</subject><subject>Ceramics - chemistry</subject><subject>Crystallography</subject><subject>Dental materials</subject><subject>Dental Materials - chemistry</subject><subject>Dentistry</subject><subject>Elastic Modulus</subject><subject>Flexural strength</subject><subject>Fracture mechanics</subject><subject>FTIR</subject><subject>In vitro aging</subject><subject>In vitro testing</subject><subject>Materials Testing</subject><subject>Modulus of rupture in bending</subject><subject>Phase transformation</subject><subject>Pliability</subject><subject>Probability</subject><subject>RAMAN</subject><subject>Restoration</subject><subject>Spectroscopy, Fourier Transform Infrared</subject><subject>Spectrum Analysis, Raman</subject><subject>Stress, Mechanical</subject><subject>Surface Properties</subject><subject>Time Factors</subject><subject>Weibull analysis</subject><subject>X-Ray Diffraction</subject><subject>XRD</subject><subject>Yttrium - chemistry</subject><subject>Zirconia ceramics</subject><subject>Zirconium - chemistry</subject><subject>Zirconium dioxide</subject><issn>0109-5641</issn><issn>1879-0097</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkk-LFDEQxRtR3HH1G4jk6KXHStLJdC6CLOsfWFBwPeglZNKV2YyZZE3Si-Pd722GGT140VMgvHpV9X7VdU8pLClQ-WK7nDBWE5YM6LAEsQTO73ULOq5UD6BW97sFUFC9kAM96x6VsgWAgSn6sDtjg1J8BLXofl46h7aS5IiP5M7XnIjZ-LghKZJ6g8QF_D5nE0ipGeOm3hATJ3Kb09qsffB1T2oiLhtb54wHm8_99ZcP5IfPNkVviMVsdt4W4lImJoT-9EEylpqyqT7F8rh74Ewo-OT0nnefXl9eX7ztr96_eXfx6qq3YpS1N3albNtJrdejGsbRSO5AcFQD5-PAJHMCpJOOKYFO8RXjdELKLeXjxCQf-Hn3_Ojb5v82twH0zheLIZiIaS6aStmi41yI_5AypSQTAE06HKU2p1IyOn2b_c7kvaagD6z0Vh9Z6QMrDUI3Vq3s2anDvN7h9KfoN5wmeHkUYIvkzmPWxXqMFiefGzM9Jf-vDn8b2OCjtyZ8xT2WbZpzbHFrqgvToD8e7uVwLnSA5iko_wW85rvT</recordid><startdate>20141201</startdate><enddate>20141201</enddate><creator>Siarampi, Eleni</creator><creator>Kontonasaki, Eleana</creator><creator>Andrikopoulos, Konstantinos S</creator><creator>Kantiranis, Nikolaos</creator><creator>Voyiatzis, George A</creator><creator>Zorba, Triantafillia</creator><creator>Paraskevopoulos, Konstantinos M</creator><creator>Koidis, Petros</creator><general>Elsevier Ltd</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QQ</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20141201</creationdate><title>Effect of in vitro aging on the flexural strength and probability to fracture of Y-TZP zirconia ceramics for all-ceramic restorations</title><author>Siarampi, Eleni ; Kontonasaki, Eleana ; Andrikopoulos, Konstantinos S ; Kantiranis, Nikolaos ; Voyiatzis, George A ; Zorba, Triantafillia ; Paraskevopoulos, Konstantinos M ; Koidis, Petros</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c586t-ac79c1099bb89488a63f053e943384262f506f6f295ef937231de13c138d26343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Advanced Basic Science</topic><topic>Algorithms</topic><topic>Ceramics</topic><topic>Ceramics - chemistry</topic><topic>Crystallography</topic><topic>Dental materials</topic><topic>Dental Materials - chemistry</topic><topic>Dentistry</topic><topic>Elastic Modulus</topic><topic>Flexural strength</topic><topic>Fracture mechanics</topic><topic>FTIR</topic><topic>In vitro aging</topic><topic>In vitro testing</topic><topic>Materials Testing</topic><topic>Modulus of rupture in bending</topic><topic>Phase transformation</topic><topic>Pliability</topic><topic>Probability</topic><topic>RAMAN</topic><topic>Restoration</topic><topic>Spectroscopy, Fourier Transform Infrared</topic><topic>Spectrum Analysis, Raman</topic><topic>Stress, Mechanical</topic><topic>Surface Properties</topic><topic>Time Factors</topic><topic>Weibull analysis</topic><topic>X-Ray Diffraction</topic><topic>XRD</topic><topic>Yttrium - chemistry</topic><topic>Zirconia ceramics</topic><topic>Zirconium - chemistry</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Siarampi, Eleni</creatorcontrib><creatorcontrib>Kontonasaki, Eleana</creatorcontrib><creatorcontrib>Andrikopoulos, Konstantinos S</creatorcontrib><creatorcontrib>Kantiranis, Nikolaos</creatorcontrib><creatorcontrib>Voyiatzis, George A</creatorcontrib><creatorcontrib>Zorba, Triantafillia</creatorcontrib><creatorcontrib>Paraskevopoulos, Konstantinos M</creatorcontrib><creatorcontrib>Koidis, Petros</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Dental materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Siarampi, Eleni</au><au>Kontonasaki, Eleana</au><au>Andrikopoulos, Konstantinos S</au><au>Kantiranis, Nikolaos</au><au>Voyiatzis, George A</au><au>Zorba, Triantafillia</au><au>Paraskevopoulos, Konstantinos M</au><au>Koidis, Petros</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of in vitro aging on the flexural strength and probability to fracture of Y-TZP zirconia ceramics for all-ceramic restorations</atitle><jtitle>Dental materials</jtitle><addtitle>Dent Mater</addtitle><date>2014-12-01</date><risdate>2014</risdate><volume>30</volume><issue>12</issue><spage>e306</spage><epage>e316</epage><pages>e306-e316</pages><issn>0109-5641</issn><eissn>1879-0097</eissn><abstract>Abstract Objectives Dental zirconia restorations should present long-term clinical survival and be in service within the oral environment for many years. However, low temperature degradation could affect their mechanical properties and survival. The aim of this study was to investigate the effect of in vitro aging on the flexural strength of yttrium-stabilized (Y-TZP) zirconia ceramics for ceramic restorations. Methods One hundred twenty bar-shaped specimens were prepared from two ceramics (ZENO Zr (WI) and IPS e.max® ZirCAD (IV)), and loaded until fracture according to ISO 6872. The specimens from each ceramic ( n x = 60) were divided in three groups (control, aged for 5 h, aged for 10 h). One-way ANOVA was used to assess statistically significant differences among flexural strength values ( P < 0.05). The variability of the flexural strength values was analyzed using the two-parameter Weibull distribution function, which was applied for the estimation of Weibull modulus ( m ) and characteristic strength ( σ0 ). The crystalline phase polymorphs of the materials (tetragonal, t , and monoclinic, m , zirconia) were investigated by X-ray diffraction (XRD) analysis, Raman spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Results A slight increase of the flexural strength after 5 h, and a decrease after 10 h of aging, was recorded for both ceramics, however statistically significant was for the WI group ( P < 0.05). Both ceramics presented a t → m phase transformation, with the m -phase increasing from 4 to 5% at 5 h to around 15% after 10 h. Significance The significant reduction of the flexural strength after 10 h of in vitro aging, suggests high fracture probability for one of the zirconia ceramics tested.</abstract><cop>England</cop><pub>Elsevier Ltd</pub><pmid>24993809</pmid><doi>10.1016/j.dental.2014.05.033</doi></addata></record> |
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| subjects | Advanced Basic Science Algorithms Ceramics Ceramics - chemistry Crystallography Dental materials Dental Materials - chemistry Dentistry Elastic Modulus Flexural strength Fracture mechanics FTIR In vitro aging In vitro testing Materials Testing Modulus of rupture in bending Phase transformation Pliability Probability RAMAN Restoration Spectroscopy, Fourier Transform Infrared Spectrum Analysis, Raman Stress, Mechanical Surface Properties Time Factors Weibull analysis X-Ray Diffraction XRD Yttrium - chemistry Zirconia ceramics Zirconium - chemistry Zirconium dioxide |
| title | Effect of in vitro aging on the flexural strength and probability to fracture of Y-TZP zirconia ceramics for all-ceramic restorations |
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