Translucency of IPS e.max and cubic zirconia monolithic crowns
Although several monolithic zirconia ceramics have recently been introduced, the need for improved optical properties remains. The newest cubic-zirconia has been claimed to have optimal translucency characteristics for esthetic restorations. This in vitro study evaluated the optical properties of no...
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| Veröffentlicht in: | The Journal of prosthetic dentistry 2018-08, Vol.120 (2), p.269-275 |
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| container_title | The Journal of prosthetic dentistry |
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| creator | Baldissara, Paolo Wandscher, Vinícius Felipe Marchionatti, Ana Maria Estivalete Parisi, Candida Monaco, Carlo Ciocca, Leonardo |
| description | Although several monolithic zirconia ceramics have recently been introduced, the need for improved optical properties remains. The newest cubic-zirconia has been claimed to have optimal translucency characteristics for esthetic restorations.
This in vitro study evaluated the optical properties of novel cubic ultratranslucent (UT) and supertranslucent (ST) zirconia by comparing them with lithium disilicate (L-DIS) glass-ceramic for the manufacture of monolithic computer-aided design and computer-aided manufacturing (CAD-CAM) molar crowns.
The UT and ST multilayered zirconia and the low-translucency grade L-DIS were milled. Eighty monolithic crowns were made from 2 CAD files, corresponding to thicknesses of 1.0 and 1.5 mm, and subdivided (n=20) into 4 groups: UT1.0, UT1.5, ST1.0, and L-DIS1.5. All groups were shaded using A2 color standard. Translucency of the crowns was measured by total transmission, using a photoradiometer in a dark chamber; furthermore, the contrast ratio was analyzed using a dental spectrophotometer applied to the buccal surface of the crowns. Data were analyzed using the Kruskal-Wallis and post hoc multiple Mann-Whitney U tests with Bonferroni correction (α=.05 divided by the number of tests performed in each set).
When the ceramic types were analyzed, using total transmission and contrast methods, they showed significantly different translucency levels: UT1.0>ST1.0>UT1.5>L-DIS1.5 (total transmission P |
| doi_str_mv | 10.1016/j.prosdent.2017.09.007 |
| format | Article |
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This in vitro study evaluated the optical properties of novel cubic ultratranslucent (UT) and supertranslucent (ST) zirconia by comparing them with lithium disilicate (L-DIS) glass-ceramic for the manufacture of monolithic computer-aided design and computer-aided manufacturing (CAD-CAM) molar crowns.
The UT and ST multilayered zirconia and the low-translucency grade L-DIS were milled. Eighty monolithic crowns were made from 2 CAD files, corresponding to thicknesses of 1.0 and 1.5 mm, and subdivided (n=20) into 4 groups: UT1.0, UT1.5, ST1.0, and L-DIS1.5. All groups were shaded using A2 color standard. Translucency of the crowns was measured by total transmission, using a photoradiometer in a dark chamber; furthermore, the contrast ratio was analyzed using a dental spectrophotometer applied to the buccal surface of the crowns. Data were analyzed using the Kruskal-Wallis and post hoc multiple Mann-Whitney U tests with Bonferroni correction (α=.05 divided by the number of tests performed in each set).
When the ceramic types were analyzed, using total transmission and contrast methods, they showed significantly different translucency levels: UT1.0>ST1.0>UT1.5>L-DIS1.5 (total transmission P<.001). Contrast ratio evaluation yielded similar results (P≤.006); however, the differences between ST1.0 and UT1.5 were not significant.
Both the ST1.0 and UT1.0 crowns, even at the maximum thickness tested (UT1.5), showed significantly higher translucency than L-DIS. Zirconia translucency was improved by eliminating the tetragonal phase, which is responsible for the toughening effect; thus, further studies are advocated to investigate the mechanical resistance of cubic zirconia.</description><identifier>ISSN: 0022-3913</identifier><identifier>EISSN: 1097-6841</identifier><identifier>DOI: 10.1016/j.prosdent.2017.09.007</identifier><identifier>PMID: 29475752</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Ceramics ; Color ; Computer-Aided Design ; Crowns ; Dental Materials - chemistry ; Dental Porcelain - chemistry ; Dental Prosthesis Design ; Dentistry ; Humans ; Light ; Materials Testing ; Optical Phenomena ; Spectrophotometry ; Surface Properties ; Zirconium - chemistry</subject><ispartof>The Journal of prosthetic dentistry, 2018-08, Vol.120 (2), p.269-275</ispartof><rights>2017 Editorial Council for the Journal of Prosthetic Dentistry</rights><rights>Copyright © 2017 Editorial Council for the Journal of Prosthetic Dentistry. Published by Elsevier Inc. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c434t-3525256d062387bdf56c13995759d16527851b03befdef4cbc95753debb9b0f13</citedby><cites>FETCH-LOGICAL-c434t-3525256d062387bdf56c13995759d16527851b03befdef4cbc95753debb9b0f13</cites><orcidid>0000-0002-2127-484X ; 0000-0002-2542-3590</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.prosdent.2017.09.007$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29475752$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Baldissara, Paolo</creatorcontrib><creatorcontrib>Wandscher, Vinícius Felipe</creatorcontrib><creatorcontrib>Marchionatti, Ana Maria Estivalete</creatorcontrib><creatorcontrib>Parisi, Candida</creatorcontrib><creatorcontrib>Monaco, Carlo</creatorcontrib><creatorcontrib>Ciocca, Leonardo</creatorcontrib><title>Translucency of IPS e.max and cubic zirconia monolithic crowns</title><title>The Journal of prosthetic dentistry</title><addtitle>J Prosthet Dent</addtitle><description>Although several monolithic zirconia ceramics have recently been introduced, the need for improved optical properties remains. The newest cubic-zirconia has been claimed to have optimal translucency characteristics for esthetic restorations.
This in vitro study evaluated the optical properties of novel cubic ultratranslucent (UT) and supertranslucent (ST) zirconia by comparing them with lithium disilicate (L-DIS) glass-ceramic for the manufacture of monolithic computer-aided design and computer-aided manufacturing (CAD-CAM) molar crowns.
The UT and ST multilayered zirconia and the low-translucency grade L-DIS were milled. Eighty monolithic crowns were made from 2 CAD files, corresponding to thicknesses of 1.0 and 1.5 mm, and subdivided (n=20) into 4 groups: UT1.0, UT1.5, ST1.0, and L-DIS1.5. All groups were shaded using A2 color standard. Translucency of the crowns was measured by total transmission, using a photoradiometer in a dark chamber; furthermore, the contrast ratio was analyzed using a dental spectrophotometer applied to the buccal surface of the crowns. Data were analyzed using the Kruskal-Wallis and post hoc multiple Mann-Whitney U tests with Bonferroni correction (α=.05 divided by the number of tests performed in each set).
When the ceramic types were analyzed, using total transmission and contrast methods, they showed significantly different translucency levels: UT1.0>ST1.0>UT1.5>L-DIS1.5 (total transmission P<.001). Contrast ratio evaluation yielded similar results (P≤.006); however, the differences between ST1.0 and UT1.5 were not significant.
Both the ST1.0 and UT1.0 crowns, even at the maximum thickness tested (UT1.5), showed significantly higher translucency than L-DIS. Zirconia translucency was improved by eliminating the tetragonal phase, which is responsible for the toughening effect; thus, further studies are advocated to investigate the mechanical resistance of cubic zirconia.</description><subject>Ceramics</subject><subject>Color</subject><subject>Computer-Aided Design</subject><subject>Crowns</subject><subject>Dental Materials - chemistry</subject><subject>Dental Porcelain - chemistry</subject><subject>Dental Prosthesis Design</subject><subject>Dentistry</subject><subject>Humans</subject><subject>Light</subject><subject>Materials Testing</subject><subject>Optical Phenomena</subject><subject>Spectrophotometry</subject><subject>Surface Properties</subject><subject>Zirconium - chemistry</subject><issn>0022-3913</issn><issn>1097-6841</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkMtOwzAQRS0EoqXwC1WWbBLGdhLXGwSqeFSqBBJlbcWPCFeJU-wEKF-Pq1K2yIuRPPfOzD0ITTFkGHB5tc42vgvauD4jgFkGPANgR2iMgbO0nOX4GI0BCEkpx3SEzkJYA8CsYPgUjQjPWcEKMkbXK1-50AzKOLVNujpZPL8kJmurr6RyOlGDtCr5tl51zlZJ27musf1b_FO--3ThHJ3UVRPMxW-doNf7u9X8MV0-PSzmt8tU5TTvU1qQ-EoNJaEzJnVdlApTzuMNXOOyIGxWYAlUmlqbOldS7VpUGym5hBrTCbrcz42p3wcTetHaoEzTVM50QxAkhueM57yI0nIvjReG4E0tNt62ld8KDGLHTqzFgZ3YsRPARbRH4_R3xyBbo_9sB1hRcLMXmJj0wxovgrKRm9HWG9UL3dn_dvwAYEuC0A</recordid><startdate>201808</startdate><enddate>201808</enddate><creator>Baldissara, Paolo</creator><creator>Wandscher, Vinícius Felipe</creator><creator>Marchionatti, Ana Maria Estivalete</creator><creator>Parisi, Candida</creator><creator>Monaco, Carlo</creator><creator>Ciocca, Leonardo</creator><general>Elsevier 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>7X8</scope><orcidid>https://orcid.org/0000-0002-2127-484X</orcidid><orcidid>https://orcid.org/0000-0002-2542-3590</orcidid></search><sort><creationdate>201808</creationdate><title>Translucency of IPS e.max and cubic zirconia monolithic crowns</title><author>Baldissara, Paolo ; Wandscher, Vinícius Felipe ; Marchionatti, Ana Maria Estivalete ; Parisi, Candida ; Monaco, Carlo ; Ciocca, Leonardo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c434t-3525256d062387bdf56c13995759d16527851b03befdef4cbc95753debb9b0f13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Ceramics</topic><topic>Color</topic><topic>Computer-Aided Design</topic><topic>Crowns</topic><topic>Dental Materials - chemistry</topic><topic>Dental Porcelain - chemistry</topic><topic>Dental Prosthesis Design</topic><topic>Dentistry</topic><topic>Humans</topic><topic>Light</topic><topic>Materials Testing</topic><topic>Optical Phenomena</topic><topic>Spectrophotometry</topic><topic>Surface Properties</topic><topic>Zirconium - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Baldissara, Paolo</creatorcontrib><creatorcontrib>Wandscher, Vinícius Felipe</creatorcontrib><creatorcontrib>Marchionatti, Ana Maria Estivalete</creatorcontrib><creatorcontrib>Parisi, Candida</creatorcontrib><creatorcontrib>Monaco, Carlo</creatorcontrib><creatorcontrib>Ciocca, Leonardo</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><jtitle>The Journal of prosthetic dentistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Baldissara, Paolo</au><au>Wandscher, Vinícius Felipe</au><au>Marchionatti, Ana Maria Estivalete</au><au>Parisi, Candida</au><au>Monaco, Carlo</au><au>Ciocca, Leonardo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Translucency of IPS e.max and cubic zirconia monolithic crowns</atitle><jtitle>The Journal of prosthetic dentistry</jtitle><addtitle>J Prosthet Dent</addtitle><date>2018-08</date><risdate>2018</risdate><volume>120</volume><issue>2</issue><spage>269</spage><epage>275</epage><pages>269-275</pages><issn>0022-3913</issn><eissn>1097-6841</eissn><abstract>Although several monolithic zirconia ceramics have recently been introduced, the need for improved optical properties remains. The newest cubic-zirconia has been claimed to have optimal translucency characteristics for esthetic restorations.
This in vitro study evaluated the optical properties of novel cubic ultratranslucent (UT) and supertranslucent (ST) zirconia by comparing them with lithium disilicate (L-DIS) glass-ceramic for the manufacture of monolithic computer-aided design and computer-aided manufacturing (CAD-CAM) molar crowns.
The UT and ST multilayered zirconia and the low-translucency grade L-DIS were milled. Eighty monolithic crowns were made from 2 CAD files, corresponding to thicknesses of 1.0 and 1.5 mm, and subdivided (n=20) into 4 groups: UT1.0, UT1.5, ST1.0, and L-DIS1.5. All groups were shaded using A2 color standard. Translucency of the crowns was measured by total transmission, using a photoradiometer in a dark chamber; furthermore, the contrast ratio was analyzed using a dental spectrophotometer applied to the buccal surface of the crowns. Data were analyzed using the Kruskal-Wallis and post hoc multiple Mann-Whitney U tests with Bonferroni correction (α=.05 divided by the number of tests performed in each set).
When the ceramic types were analyzed, using total transmission and contrast methods, they showed significantly different translucency levels: UT1.0>ST1.0>UT1.5>L-DIS1.5 (total transmission P<.001). Contrast ratio evaluation yielded similar results (P≤.006); however, the differences between ST1.0 and UT1.5 were not significant.
Both the ST1.0 and UT1.0 crowns, even at the maximum thickness tested (UT1.5), showed significantly higher translucency than L-DIS. Zirconia translucency was improved by eliminating the tetragonal phase, which is responsible for the toughening effect; thus, further studies are advocated to investigate the mechanical resistance of cubic zirconia.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>29475752</pmid><doi>10.1016/j.prosdent.2017.09.007</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-2127-484X</orcidid><orcidid>https://orcid.org/0000-0002-2542-3590</orcidid></addata></record> |
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| subjects | Ceramics Color Computer-Aided Design Crowns Dental Materials - chemistry Dental Porcelain - chemistry Dental Prosthesis Design Dentistry Humans Light Materials Testing Optical Phenomena Spectrophotometry Surface Properties Zirconium - chemistry |
| title | Translucency of IPS e.max and cubic zirconia monolithic crowns |
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