Translucency of zirconia copings made with different CAD/CAM systems
Statement of problem Zirconia cores are reported to be less translucent than glass, lithium disilicate, or alumina cores. This could affect the esthetic appearance and the clinical choices made when using zirconia-based restorations. Purpose The purpose of this in vitro study was to evaluate the tra...
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| Veröffentlicht in: | The Journal of prosthetic dentistry 2010-07, Vol.104 (1), p.6-12 |
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| container_title | The Journal of prosthetic dentistry |
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| creator | Baldissara, Paolo, DDS Llukacej, Altin, DDS Ciocca, Leonardo, DDS Valandro, Felipe L., MSD, PhD Scotti, Roberto, MD, DDS |
| description | Statement of problem Zirconia cores are reported to be less translucent than glass, lithium disilicate, or alumina cores. This could affect the esthetic appearance and the clinical choices made when using zirconia-based restorations. Purpose The purpose of this in vitro study was to evaluate the translucency of zirconia copings for single crowns fabricated using different CAD/CAM systems, using lithium disilicate glass ceramic as a control. Material and methods Using impressions made from a stainless steel complete-crown master die, 9 stone cast replicas were fabricated, numbered, and distributed into 8 ceramic ZrO2 CAD/CAM system groups (Lava Frame 0.3 and 0.5, IPS e.max ZirCAD, VITA YZ, Procera AllZircon, Digizon, DC Zircon, and Cercon Base) and to a lithium disilicate glass-ceramic control group (IPS e.max Press) using a simple computer-generated randomization method. From each die, the manufacturer's authorized milling centers supplied 5 copings per group without applying any dying technique to the ceramic base material. The copings were prepared to allow for a 40-μm cement layer and were of different thicknesses according to system specifications. Translucency was measured by the direct transmission method with a digital photoradiometer mounted in a dark chamber. The light source was a 150-W halogen lamp beam. Measurements were repeated 3 times for each specimen. Data obtained were analyzed using 1-way ANOVA and the Bonferroni multiple comparison test (α=.05). Results Among ZrO2 copings, Lava (0.3 mm and 0.5 mm thick) showed the highest ( P |
| doi_str_mv | 10.1016/S0022-3913(10)60086-8 |
| format | Article |
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This could affect the esthetic appearance and the clinical choices made when using zirconia-based restorations. Purpose The purpose of this in vitro study was to evaluate the translucency of zirconia copings for single crowns fabricated using different CAD/CAM systems, using lithium disilicate glass ceramic as a control. Material and methods Using impressions made from a stainless steel complete-crown master die, 9 stone cast replicas were fabricated, numbered, and distributed into 8 ceramic ZrO2 CAD/CAM system groups (Lava Frame 0.3 and 0.5, IPS e.max ZirCAD, VITA YZ, Procera AllZircon, Digizon, DC Zircon, and Cercon Base) and to a lithium disilicate glass-ceramic control group (IPS e.max Press) using a simple computer-generated randomization method. From each die, the manufacturer's authorized milling centers supplied 5 copings per group without applying any dying technique to the ceramic base material. The copings were prepared to allow for a 40-μm cement layer and were of different thicknesses according to system specifications. Translucency was measured by the direct transmission method with a digital photoradiometer mounted in a dark chamber. The light source was a 150-W halogen lamp beam. Measurements were repeated 3 times for each specimen. Data obtained were analyzed using 1-way ANOVA and the Bonferroni multiple comparison test (α=.05). Results Among ZrO2 copings, Lava (0.3 mm and 0.5 mm thick) showed the highest ( P <.05) values of translucency measured as light flow units (3.572 ±018 × 103 lx and 3.181 ±0.13 × 103 lx, respectively). These values represent 71.7% and 63.9%, respectively, of the glass-ceramic control group (4.98 × 103 lx). Conclusions All ZrO2 copings demonstrated different levels of light transmission, with the 2 Lava specimens showing the highest values. Translucency of zirconia copings was significantly lower ( P =.001) than that of the lithium disilicate glass-ceramic control. (J Prosthet Dent 2010;104:6-12)</description><identifier>ISSN: 0022-3913</identifier><identifier>EISSN: 1097-6841</identifier><identifier>DOI: 10.1016/S0022-3913(10)60086-8</identifier><identifier>PMID: 20620365</identifier><language>eng</language><publisher>United States: Mosby, Inc</publisher><subject>Aluminum oxide ; Analysis of variance ; Ceramics ; Ceramics - chemistry ; Chambers ; Computer aided design ; Computer aided manufacturing ; Computer-Aided Design - classification ; Control systems ; Crowns ; Dental Porcelain - chemistry ; Dental Prosthesis Design ; Dentistry ; Glass ceramics ; Humans ; Lava ; Light ; Lithium ; Materials Testing ; Optical Phenomena ; Photometry ; Prosthetics ; Radiometry ; Zirconium - chemistry ; Zirconium dioxide</subject><ispartof>The Journal of prosthetic dentistry, 2010-07, Vol.104 (1), p.6-12</ispartof><rights>The Editorial Council of the Journal of Prosthetic Dentistry</rights><rights>2010 The Editorial Council of the Journal of Prosthetic Dentistry</rights><rights>Copyright 2010 The Editorial Council of the Journal of Prosthetic Dentistry. Published by Mosby, Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c516t-b43141eb9e1ca01a34cca7b52bb3f1c7392fdc2fcae73fef6f4fb4aa3f8e909d3</citedby><cites>FETCH-LOGICAL-c516t-b43141eb9e1ca01a34cca7b52bb3f1c7392fdc2fcae73fef6f4fb4aa3f8e909d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0022-3913(10)60086-8$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,777,781,3537,27905,27906,45976</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20620365$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Baldissara, Paolo, DDS</creatorcontrib><creatorcontrib>Llukacej, Altin, DDS</creatorcontrib><creatorcontrib>Ciocca, Leonardo, DDS</creatorcontrib><creatorcontrib>Valandro, Felipe L., MSD, PhD</creatorcontrib><creatorcontrib>Scotti, Roberto, MD, DDS</creatorcontrib><title>Translucency of zirconia copings made with different CAD/CAM systems</title><title>The Journal of prosthetic dentistry</title><addtitle>J Prosthet Dent</addtitle><description>Statement of problem Zirconia cores are reported to be less translucent than glass, lithium disilicate, or alumina cores. This could affect the esthetic appearance and the clinical choices made when using zirconia-based restorations. Purpose The purpose of this in vitro study was to evaluate the translucency of zirconia copings for single crowns fabricated using different CAD/CAM systems, using lithium disilicate glass ceramic as a control. Material and methods Using impressions made from a stainless steel complete-crown master die, 9 stone cast replicas were fabricated, numbered, and distributed into 8 ceramic ZrO2 CAD/CAM system groups (Lava Frame 0.3 and 0.5, IPS e.max ZirCAD, VITA YZ, Procera AllZircon, Digizon, DC Zircon, and Cercon Base) and to a lithium disilicate glass-ceramic control group (IPS e.max Press) using a simple computer-generated randomization method. From each die, the manufacturer's authorized milling centers supplied 5 copings per group without applying any dying technique to the ceramic base material. The copings were prepared to allow for a 40-μm cement layer and were of different thicknesses according to system specifications. Translucency was measured by the direct transmission method with a digital photoradiometer mounted in a dark chamber. The light source was a 150-W halogen lamp beam. Measurements were repeated 3 times for each specimen. Data obtained were analyzed using 1-way ANOVA and the Bonferroni multiple comparison test (α=.05). Results Among ZrO2 copings, Lava (0.3 mm and 0.5 mm thick) showed the highest ( P <.05) values of translucency measured as light flow units (3.572 ±018 × 103 lx and 3.181 ±0.13 × 103 lx, respectively). These values represent 71.7% and 63.9%, respectively, of the glass-ceramic control group (4.98 × 103 lx). Conclusions All ZrO2 copings demonstrated different levels of light transmission, with the 2 Lava specimens showing the highest values. Translucency of zirconia copings was significantly lower ( P =.001) than that of the lithium disilicate glass-ceramic control. (J Prosthet Dent 2010;104:6-12)</description><subject>Aluminum oxide</subject><subject>Analysis of variance</subject><subject>Ceramics</subject><subject>Ceramics - chemistry</subject><subject>Chambers</subject><subject>Computer aided design</subject><subject>Computer aided manufacturing</subject><subject>Computer-Aided Design - classification</subject><subject>Control systems</subject><subject>Crowns</subject><subject>Dental Porcelain - chemistry</subject><subject>Dental Prosthesis Design</subject><subject>Dentistry</subject><subject>Glass ceramics</subject><subject>Humans</subject><subject>Lava</subject><subject>Light</subject><subject>Lithium</subject><subject>Materials Testing</subject><subject>Optical Phenomena</subject><subject>Photometry</subject><subject>Prosthetics</subject><subject>Radiometry</subject><subject>Zirconium - chemistry</subject><subject>Zirconium dioxide</subject><issn>0022-3913</issn><issn>1097-6841</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkU1v1DAQQC1ERZeFnwDKjXJIO2MndnwBrbZ8VCriQDlbjjMGl3xs7QS0_Hqyu6UHDi0nS9abN9I8xl4gnCKgPPsCwHkuNIoThNcSoJJ59YgtELTKZVXgY7a4Q47Z05SuYYZKhU_YMQfJQchywc6vou1TOznq3TYbfPY7RDf0wWZu2IT-W8o621D2K4zfsyZ4T5H6MVuvzs_Wq09Z2qaRuvSMHXnbJnp--y7Z1_fvrtYf88vPHy7Wq8vclSjHvC4EFki1JnQW0IrCOavqkte18OiU0Nw3jntnSQlPXvrC14W1wlekQTdiyV4dvJs43EyURtOF5KhtbU_DlIySwBGU5P9DYskroR4mhdBVWYpiJk_uJVFqLlSh53svWXlAXRxSiuTNJobOxq1BMLt8Zp_P7Nrsvvb5TDXPvbxdMdUdNXdTf3vNwNsDQPOZfwaKJrkwp6MmRHKjaYbw4Io3_xhcG_rgbPuDtpSuhyn2c0ODJnEDB8nOgbA3VOIP2Y29fw</recordid><startdate>20100701</startdate><enddate>20100701</enddate><creator>Baldissara, Paolo, DDS</creator><creator>Llukacej, Altin, DDS</creator><creator>Ciocca, Leonardo, DDS</creator><creator>Valandro, Felipe L., MSD, PhD</creator><creator>Scotti, Roberto, MD, DDS</creator><general>Mosby, Inc</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>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>JG9</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20100701</creationdate><title>Translucency of zirconia copings made with different CAD/CAM systems</title><author>Baldissara, Paolo, DDS ; Llukacej, Altin, DDS ; Ciocca, Leonardo, DDS ; Valandro, Felipe L., MSD, PhD ; Scotti, Roberto, MD, DDS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c516t-b43141eb9e1ca01a34cca7b52bb3f1c7392fdc2fcae73fef6f4fb4aa3f8e909d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Aluminum oxide</topic><topic>Analysis of variance</topic><topic>Ceramics</topic><topic>Ceramics - chemistry</topic><topic>Chambers</topic><topic>Computer aided design</topic><topic>Computer aided manufacturing</topic><topic>Computer-Aided Design - classification</topic><topic>Control systems</topic><topic>Crowns</topic><topic>Dental Porcelain - chemistry</topic><topic>Dental Prosthesis Design</topic><topic>Dentistry</topic><topic>Glass ceramics</topic><topic>Humans</topic><topic>Lava</topic><topic>Light</topic><topic>Lithium</topic><topic>Materials Testing</topic><topic>Optical Phenomena</topic><topic>Photometry</topic><topic>Prosthetics</topic><topic>Radiometry</topic><topic>Zirconium - chemistry</topic><topic>Zirconium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baldissara, Paolo, DDS</creatorcontrib><creatorcontrib>Llukacej, Altin, DDS</creatorcontrib><creatorcontrib>Ciocca, Leonardo, DDS</creatorcontrib><creatorcontrib>Valandro, Felipe L., MSD, PhD</creatorcontrib><creatorcontrib>Scotti, Roberto, MD, DDS</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</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>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>The Journal of prosthetic dentistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baldissara, Paolo, DDS</au><au>Llukacej, Altin, DDS</au><au>Ciocca, Leonardo, DDS</au><au>Valandro, Felipe L., MSD, PhD</au><au>Scotti, Roberto, MD, DDS</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Translucency of zirconia copings made with different CAD/CAM systems</atitle><jtitle>The Journal of prosthetic dentistry</jtitle><addtitle>J Prosthet Dent</addtitle><date>2010-07-01</date><risdate>2010</risdate><volume>104</volume><issue>1</issue><spage>6</spage><epage>12</epage><pages>6-12</pages><issn>0022-3913</issn><eissn>1097-6841</eissn><abstract>Statement of problem Zirconia cores are reported to be less translucent than glass, lithium disilicate, or alumina cores. This could affect the esthetic appearance and the clinical choices made when using zirconia-based restorations. Purpose The purpose of this in vitro study was to evaluate the translucency of zirconia copings for single crowns fabricated using different CAD/CAM systems, using lithium disilicate glass ceramic as a control. Material and methods Using impressions made from a stainless steel complete-crown master die, 9 stone cast replicas were fabricated, numbered, and distributed into 8 ceramic ZrO2 CAD/CAM system groups (Lava Frame 0.3 and 0.5, IPS e.max ZirCAD, VITA YZ, Procera AllZircon, Digizon, DC Zircon, and Cercon Base) and to a lithium disilicate glass-ceramic control group (IPS e.max Press) using a simple computer-generated randomization method. From each die, the manufacturer's authorized milling centers supplied 5 copings per group without applying any dying technique to the ceramic base material. The copings were prepared to allow for a 40-μm cement layer and were of different thicknesses according to system specifications. Translucency was measured by the direct transmission method with a digital photoradiometer mounted in a dark chamber. The light source was a 150-W halogen lamp beam. Measurements were repeated 3 times for each specimen. Data obtained were analyzed using 1-way ANOVA and the Bonferroni multiple comparison test (α=.05). Results Among ZrO2 copings, Lava (0.3 mm and 0.5 mm thick) showed the highest ( P <.05) values of translucency measured as light flow units (3.572 ±018 × 103 lx and 3.181 ±0.13 × 103 lx, respectively). These values represent 71.7% and 63.9%, respectively, of the glass-ceramic control group (4.98 × 103 lx). Conclusions All ZrO2 copings demonstrated different levels of light transmission, with the 2 Lava specimens showing the highest values. Translucency of zirconia copings was significantly lower ( P =.001) than that of the lithium disilicate glass-ceramic control. (J Prosthet Dent 2010;104:6-12)</abstract><cop>United States</cop><pub>Mosby, Inc</pub><pmid>20620365</pmid><doi>10.1016/S0022-3913(10)60086-8</doi><tpages>7</tpages></addata></record> |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Aluminum oxide Analysis of variance Ceramics Ceramics - chemistry Chambers Computer aided design Computer aided manufacturing Computer-Aided Design - classification Control systems Crowns Dental Porcelain - chemistry Dental Prosthesis Design Dentistry Glass ceramics Humans Lava Light Lithium Materials Testing Optical Phenomena Photometry Prosthetics Radiometry Zirconium - chemistry Zirconium dioxide |
| title | Translucency of zirconia copings made with different CAD/CAM systems |
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