{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T23:35:11Z","timestamp":1770161711555,"version":"3.49.0"},"reference-count":13,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T00:00:00Z","timestamp":1769990400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Reports"],"abstract":"<jats:p>Zirconia is widely used in full-arch restorations due to its strength and aesthetics, but failures can still affect its performance in clinical practice. In this report, a full-arch tooth-supported zirconia bridge fractured prematurely (eleven months), encouraging an investigation into its design and failure mechanisms. STL files obtained from the dental laboratory revealed regions of reduced framework thickness, falling below the manufacturer\u2019s recommendations. Fractographic analysis of the fractured pieces indicated a multifactorial failure pattern. Notable features included a thick cement layer, surface damage likely caused by the CAM bur during milling, and occlusal wear affecting the glazed surface. Crack propagation was observed in an occlusal-to-cervical direction. While no single factor could be definitively identified as the primary cause, the failure is attributed to the combined effect of insufficient design, surface damage, and biomechanical overload. Importantly, most such factors are not visible before failure, raising questions about the proper evaluation of zirconia-based restorations prior to their cementation.<\/jats:p>","DOI":"10.3390\/reports9010049","type":"journal-article","created":{"date-parts":[[2026,2,2]],"date-time":"2026-02-02T15:38:12Z","timestamp":1770046692000},"page":"49","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Fractured Full-Arch Tooth-Supported Zirconia Bridge: Thin Design, Surface Damage, and Excessive Cement Layer Thickness"],"prefix":"10.3390","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5412-3546","authenticated-orcid":false,"given":"Jo\u00e3o Paulo Mendes","family":"Tribst","sequence":"first","affiliation":[{"name":"Department of Reconstructive Oral Care, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, Noord-Holland, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bart","family":"Jansen","sequence":"additional","affiliation":[{"name":"Department of Reconstructive Oral Care, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, Noord-Holland, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7853-5967","authenticated-orcid":false,"given":"Rafaela Oliveira","family":"Pilecco","sequence":"additional","affiliation":[{"name":"Department of Conservative Dentistry, Faculty of Dentistry, Federal University of Rio Grande do Sul (UFRGS), R. Ramiro Barcelos, 2492, Porto Alegre 90035003, RS, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5710-0537","authenticated-orcid":false,"given":"J\u00e1nos","family":"Kodol\u00e1nyi","sequence":"additional","affiliation":[{"name":"Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, Noord-Holland, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3844-2053","authenticated-orcid":false,"given":"Amanda Maria de Oliveira","family":"Dal Piva","sequence":"additional","affiliation":[{"name":"Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), Universiteit van Amsterdam and Vrije Universiteit, Gustav Mahlerlaan 3004, 1081 LA Amsterdam, Noord-Holland, The Netherlands"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,2,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e15669","DOI":"10.7717\/peerj.15669","article-title":"Current classification of zirconia in dentistry: An updated review","volume":"11","author":"Kongkiatkamon","year":"2023","journal-title":"PeerJ"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"105382","DOI":"10.1016\/j.jdent.2024.105382","article-title":"Clinical performance of zirconia-based tooth-supported fixed dental prostheses: A systematic review and meta-analysis","volume":"151","author":"Chen","year":"2024","journal-title":"J. Dent."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"e1078","DOI":"10.4317\/jced.57352","article-title":"Long-term fracture load of all-ceramic crowns: Effects of veneering ceramic thickness, application techniques, and cooling protocol","volume":"12","author":"Lima","year":"2020","journal-title":"J. Clin. Exp. Dent."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"6692939","DOI":"10.1155\/2021\/6692939","article-title":"Patient Satisfaction with Implant-Supported Monolithic and Partially Veneered Zirconia Restorations","volume":"2021","author":"Gasparini","year":"2021","journal-title":"Biomed. Res. Int."},{"key":"ref_5","first-page":"616","article-title":"Zirconia implant abutment fracture: Clinical case reports and precautions for use","volume":"22","author":"Aboushelib","year":"2009","journal-title":"Int. J. 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Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"319","DOI":"10.17219\/dmp\/174707","article-title":"Brittle dental ceramics: A challenge in dentistry","volume":"61","author":"Tribst","year":"2024","journal-title":"Dent. Med. Probl."}],"container-title":["Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2571-841X\/9\/1\/49\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T10:38:56Z","timestamp":1770115136000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2571-841X\/9\/1\/49"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,2,2]]},"references-count":13,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2026,3]]}},"alternative-id":["reports9010049"],"URL":"https:\/\/doi.org\/10.3390\/reports9010049","relation":{},"ISSN":["2571-841X"],"issn-type":[{"value":"2571-841X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,2,2]]}}}