{"id":4903,"date":"2026-05-05T15:42:44","date_gmt":"2026-05-05T07:42:44","guid":{"rendered":"https:\/\/wp.dentalcncs.com\/?p=4903"},"modified":"2026-05-09T15:56:55","modified_gmt":"2026-05-09T07:56:55","slug":"cause-di-frattura-della-corona-in-zirconia-dopo-la-sinterizzazione-nel-processo-di-laboratorio-odontotecnico","status":"publish","type":"post","link":"https:\/\/www.dentalcncs.com\/it\/blog\/causes-of-zirconia-crown-fracture-after-sintering-in-dental-laboratory-processing\/","title":{"rendered":"Cause di frattura della corona in zirconia dopo la sinterizzazione nel processo di laboratorio odontotecnico"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"4903\" class=\"elementor elementor-4903\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a2cf95 e-flex e-con-boxed e-con e-parent\" data-id=\"a2cf95\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-486fd081 elementor-widget elementor-widget-text-editor\" data-id=\"486fd081\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"has-text-align-center\" style=\"text-align: left;\">Nei laboratori odontotecnici sudamericani, in particolare in Brasile, Cile, Messico e Argentina,<strong>frattura della corona in zirconia dopo la sinterizzazione<\/strong> rimane una sfida comune che influisce sulla coerenza del restauro e sui remake. Il problema \u00e8 particolarmente evidente in <strong>Riabilitazioni dentali complete dell&#039;arcata<\/strong> e nella fabbricazione di ponti a pi\u00f9 elementi, dove le fratture compaiono spesso in prossimit\u00e0 di connettori, margini o aree sottoposte a sollecitazioni.<\/p>\n<p style=\"text-align: left;\"><!-- \/wp:paragraph --><!-- wp:paragraph {\"align\":\"center\"} --><\/p>\n<p class=\"has-text-align-center\" style=\"text-align: left;\">In molti casi, la fessurazione non \u00e8 causata da un singolo fattore. Invece, \u00e8 il risultato di <strong>Selezione dei materiali, progettazione CAD, condizioni di fresatura e compatibilit\u00e0 con la sinterizzazione lavorano in sinergia.<\/strong>. Questo articolo analizza casi tipici di frattura e strategie pratiche di ottimizzazione CAD\/CAM.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading --><\/p>\n<p class=\"wp-block-heading\"><strong>Casi comuni di frattura delle corone in zirconia<\/strong><\/p>\n<p><!-- \/wp:heading --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\" style=\"text-align: center;\"><span style=\"color: #008ed4;\">Caso 1: Fratture dei connettori nei ponti ad arco completo<\/span><\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>I restauri di lunga campata con aree di connessione sottili sono pi\u00f9 vulnerabili alla concentrazione di stress termico durante la sinterizzazione.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><strong>Le cause tipiche includono:<\/strong><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:list --><\/p>\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>\n<p>Progettazione scadente del connettore<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p>Compensazione inaccurata delle perdite<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p>Disallineamento della resistenza dei materiali nelle aree posteriori<\/p>\n<\/li>\n<!-- \/wp:list-item --><\/ul>\n<p><!-- \/wp:list --><!-- wp:paragraph --><\/p>\n<p>Per le regioni posteriori, di solito \u00e8 necessario un supporto in zirconia pi\u00f9 robusto.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\" style=\"text-align: center;\"><span style=\"color: #008ed4;\">Caso 2: Scheggiature marginali e microfratture<\/span><\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>Le piccole crepe create durante la fresatura possono espandersi dopo la sinterizzazione.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p><strong>Le cause pi\u00f9 comuni includono:<\/strong><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:list --><\/p>\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>\n<p>Frese usurate<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p>Struttura del materiale incoerente<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p>Margini di restauro sottili<\/p>\n<\/li>\n<!-- \/wp:list-item --><\/ul>\n<p><!-- \/wp:list --><!-- wp:paragraph --><\/p>\n<p>Questi problemi si verificano frequentemente nella fabbricazione di corone di precisione.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:image {\"id\":4904,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} --><\/p>\n<p class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"635\" height=\"373\" class=\"wp-image-4904 aligncenter\" src=\"https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/043009.png\" alt=\"\" srcset=\"https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/043009.png 635w, https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/043009-300x176.png 300w, https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/043009-18x12.png 18w\" sizes=\"(max-width: 635px) 100vw, 635px\" \/><\/p>\n<p><!-- \/wp:image --><!-- wp:heading --><\/p>\n<p class=\"wp-block-heading\"><strong>Come le propriet\u00e0 dei materiali influenzano la stabilit\u00e0 della sinterizzazione<\/strong><\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>Nel caso di restauri completi dell&#039;arcata dentale in zirconia, le prestazioni del materiale influenzano notevolmente il risultato finale.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p>I principali indicatori tecnici spesso includono:<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:list --><\/p>\n<ul class=\"wp-block-list\"><!-- wp:list-item -->\n<li>\n<p><strong>Resistenza alla flessione di 700\u20131200 MPa<\/strong><\/p>\n<p>Soddisfa le diverse esigenze occlusali sia nei restauri anteriori che posteriori.<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p><strong>Struttura a gradiente a 15 strati<\/strong><\/p>\n<p>Aiuta a simulare le transizioni naturali dei denti e a migliorare la distribuzione delle sollecitazioni.<\/p>\n<\/li>\n<!-- \/wp:list-item --><!-- wp:list-item -->\n<li>\n<p><strong>gradiente di traslucenza 43%\u201357%<\/strong><\/p>\n<p>Esalta l&#039;aspetto naturale mantenendo un&#039;estetica multistrato.<\/p>\n<\/li>\n<!-- \/wp:list-item --><\/ul>\n<p><!-- \/wp:list --><!-- wp:paragraph --><\/p>\n<p>I laboratori sudamericani stanno valutando sempre pi\u00f9 <strong>consistenza di sinterizzazione<\/strong>, non solo abbinamento di tonalit\u00e0.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:image {\"id\":4905,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} --><\/p>\n<p class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"522\" height=\"523\" class=\"wp-image-4905 aligncenter\" src=\"https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/\u5c4f\u5e55\u622a\u56fe-2026-03-19-154322.png\" alt=\"\" srcset=\"https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/\u5c4f\u5e55\u622a\u56fe-2026-03-19-154322.png 522w, https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/\u5c4f\u5e55\u622a\u56fe-2026-03-19-154322-300x300.png 300w, https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/\u5c4f\u5e55\u622a\u56fe-2026-03-19-154322-150x150.png 150w, https:\/\/www.dentalcncs.com\/wp-content\/uploads\/2026\/05\/\u5c4f\u5e55\u622a\u56fe-2026-03-19-154322-12x12.png 12w\" sizes=\"(max-width: 522px) 100vw, 522px\" \/><\/p>\n<p><!-- \/wp:image --><!-- wp:heading --><\/p>\n<p class=\"wp-block-heading\"><strong>Strategie di ottimizzazione CAD\/CAM<\/strong><\/p>\n<p><!-- \/wp:heading --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\">1. Migliorare la progettazione strutturale dei ponti<\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>Evitare lunghezze eccessive delle parti a sbalzo e mantenere uno spessore del connettore bilanciato.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\">2. Abbinare i profili di sinterizzazione<\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>I diversi sistemi a base di zirconia richiedono parametri di riscaldamento e raffreddamento specifici.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\">3. Selezionare la zirconia multistrato<\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>Le strutture in zirconia a gradiente migliorano la distribuzione del carico nelle protesi a arcata completa.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><\/p>\n<p class=\"wp-block-heading\">4. Monitorare le condizioni della fresa<\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>L&#039;usura degli utensili pu\u00f2 aumentare le sollecitazioni sui bordi e innescare la propagazione delle cricche post-sinterizzazione.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading --><\/p>\n<p class=\"wp-block-heading\"><strong>Approfondimento del settore: nuove tendenze nei laboratori odontotecnici sudamericani<\/strong><\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>Con la crescita dell&#039;odontoiatria digitale in Sud America, i laboratori stanno passando dal concentrarsi solo sulla velocit\u00e0 di produzione alla priorit\u00e0 <strong>stabilit\u00e0 del materiale e coerenza del processo a lungo termine<\/strong>.<\/p>\n<p><!-- \/wp:paragraph --><!-- wp:heading --><\/p>\n<p class=\"wp-block-heading\"><strong>Conclusione<\/strong><\/p>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>La rottura della corona in zirconia dopo la sinterizzazione \u00e8 solitamente il risultato di <strong>molteplici fattori interconnessi<\/strong>, tra cui le propriet\u00e0 dei materiali, la logica di progettazione e il trattamento termico. Per i restauri a arcata completa, la scelta di zirconia multistrato con gradienti di resistenza stabili e l&#039;ottimizzazione dei flussi di lavoro CAD\/CAM possono contribuire a ridurre i rischi di frattura e a migliorare l&#039;affidabilit\u00e0 del restauro.<\/p>\n<p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n    <div class=\"xs_social_share_widget xs_share_url after_content \t\tmain_content  wslu-style-1 wslu-share-box-shaped wslu-fill-colored wslu-none wslu-share-horizontal wslu-theme-font-no wslu-main_content\">\n\n\t\t\n        <ul>\n\t\t\t        <\/ul>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>Across South American dental laboratories\u2014particularly in Brazil, Chile, Mexico, and Argentina\u2014zirconia crown fracture after sintering remains a common challenge affecting [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4904,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_eb_attr":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[7],"tags":[],"class_list":["post-4903","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Causes of Zirconia Crown Fracture After Sintering in Dental Laboratory Processing - CAD CAM Equipment &amp; Dental Materials Solutions | YUCERA One-Stop Partner<\/title>\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.dentalcncs.com\/it\/blog\/cause-di-frattura-della-corona-in-zirconia-dopo-la-sinterizzazione-nel-processo-di-laboratorio-odontotecnico\/\" \/>\n<meta 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