{"id":4125,"date":"2014-01-01T00:00:00","date_gmt":"2013-12-31T23:00:00","guid":{"rendered":"https:\/\/www.ardentis.ch\/publications\/microhardness-of-light-and-dual-polymerizable-luting-resins-polymerized-through\/"},"modified":"2026-03-10T15:05:20","modified_gmt":"2026-03-10T14:05:20","slug":"microhardness-of-light-and-dual-polymerizable-luting-resins-polymerized-through","status":"publish","type":"publication","link":"https:\/\/www.ardentis.ch\/en\/publications\/microhardness-of-light-and-dual-polymerizable-luting-resins-polymerized-through\/","title":{"rendered":"Microhardness of light- and dual-polymerizable luting resins polymerized through 7.5-mm-thick endocrowns."},"content":{"rendered":"\n<p><strong>Authors<\/strong><\/p>\n<p>Gregor L., Bouillaguet S., Onisor I., Ardu S., Krejci I., Rocca G. T.<\/p>\n\n<p><strong>Title<\/strong><\/p>\n<p>Microhardness of light- and dual-polymerizable luting resins polymerized through 7.5-mm-thick endocrowns.<\/p>\n\n<p><strong>Journal<\/strong><\/p>\n<p>Journal of Prosthetic Dentistry 112(4):942-948, 2014<\/p>\n\n<p><strong>Link<\/strong><\/p>\n<p><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24767899\/\">https:\/\/pubmed.ncbi.nlm.nih.gov\/24767899\/<\/a><\/p>\n\n<p><strong>Abstract<\/strong><\/p>\n<p>ABSTRACT\n \n Statement of the problem: The complete polymerization of luting resins through thick indirect restorations is still questioned.\n Purpose: The purpose of this study was to evaluate the degree of polymerization of light- and dual-polymerizable luting resins under thick indirect composite resin and ceramic endocrowns by means of Vickers microhardness measurements.\n Material and methods: The Vickers microhardness measurements of a light-polymerizable microhybrid composite resin and a dual-polymerizable luting cement directly polymerized in a natural tooth mold for 40 seconds with a high-power light-emitting diode lamp (control) were compared with measurements after indirect irradiation through 7.5-mm-thick composite resin and ceramic endocrowns for 3 \u00d7 90 seconds. A test-to-control microhardness values ratio of 0.80 at a depth of 0.5 mm below the surface was assumed as the criterion for adequate conversion.\n Results: For the Vickers microhardness measurements of a dual-polymerizable luting cement, no differences (P>.05) were found between Vickers microhardness control values and values reported after polymerization through composite resin and ceramic endocrowns. For The Vickers microhardness measurements (\u00b1SD) of a light-polymerizable microhybrid composite resin, control values were significantly (P<.05) higher (111 \u00b13.3) than those reported after polymerization through composite resin (100.5 \u00b13.8) and ceramic (99.7 \u00b12.3) endocrowns. However, the hardness values of The Vickers microhardness measurements of a light-polymerizable microhybrid composite resin polymerized through the endocrowns were approximately 10% to 12% lower than those of the control values. Two-way ANOVA showed the influence of the luting material on the Vickers microhardness values (P<.05). The effect of endocrown material was not significant (P>.05).\n Conclusions: Under the conditions of this in vitro study, Vickers microhardness values of the dual-polymerizable resin cement and the light-polymerizable restorative composite resin irradiated for 3 \u00d7 90 seconds with a high irradiance light-emitting diode lamp through 7.5-mm-thick endocrowns reached at least 80% of the control Vickers microhardness values, which means that both materials can be adequately polymerized when they are used for luting thick indirect restorations.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Authors Gregor L., Bouillaguet S., Onisor I., Ardu S., Krejci I., Rocca G. T. Title Microhardness of light- and dual-polymerizable luting resins polymerized through 7.5-mm-thick endocrowns. Journal Journal of Prosthetic Dentistry 112(4):942-948, 2014 Link https:\/\/pubmed.ncbi.nlm.nih.gov\/24767899\/ Abstract ABSTRACT Statement of the problem: The complete polymerization of luting resins through thick indirect restorations is still questioned. Purpose: [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5150,"template":"","meta":{"video_url":"","sticky":false},"publication_tag":[],"class_list":["post-4125","publication","type-publication","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microhardness of light | Ardentis<\/title>\n<meta name=\"description\" content=\"Microhardness of light- and dual-polymerizable luting resins polymerized through 7.5-mm-thick endocrowns.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ardentis.ch\/en\/publications\/microhardness-of-light-and-dual-polymerizable-luting-resins-polymerized-through\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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