{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:35:36Z","timestamp":1760146536293,"version":"build-2065373602"},"reference-count":18,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2024,11,17]],"date-time":"2024-11-17T00:00:00Z","timestamp":1731801600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This study evaluates the mechanical properties of materials used in the post-endodontic restoration of root-treated teeth and examines their performance under stress to provide insights for material selection in clinical applications. Particular attention is given to zirconium oxide, which demonstrates promising characteristics due to its esthetic color and favorable material properties, positioning it as a potential material for future use in post-endodontic treatments. Three materials\u2014prefabricated quartz fiber-reinforced composite, milled zirconium oxide, and additively manufactured cobalt\u2013chromium\u2014were evaluated using compressive-deflection tests. The specimens were subjected to a 45\u00b0 compressive load extending 5 mm from a metal core. Their mechanical properties were analyzed using one-way ANOVA and Tukey\u2019s post hoc test. Significant differences were observed among the materials. Quartz fiber posts, with the lowest force resistance, buckled at lower loads (143.3 \u00b1 9.9 N), while zirconia posts failed in a brittle manner at higher forces (246.1 \u00b1 97.2 N). Cobalt\u2013chromium posts demonstrated the highest maximal force (323.2 \u00b1 10.5 N, p &lt; 0.001) and, unlike the other materials, bent rather than fractured. The failure patterns of the tested materials underscore the importance of careful material selection when restoring root-treated teeth. Despite displaying distinct fracture characteristics, zirconium oxide, due to its color, rigidity, and hardness, stands out as a promising material for future dental applications. Further research through randomized clinical trials is recommended to refine treatment approaches and optimize clinical outcomes.<\/jats:p>","DOI":"10.3390\/ma17225611","type":"journal-article","created":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T07:51:15Z","timestamp":1732002675000},"page":"5611","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Zirconium Oxide as a Novel Material for Post-Endodontically Treated Teeth: Comparative Fracture Behavior of 3D-Printed Cobalt\u2013Chromium, Milled Zirconium Oxide, and Quartz Fiber Posts"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9553-7112","authenticated-orcid":false,"given":"Armin","family":"Sokolowski","sequence":"first","affiliation":[{"name":"Division of Restorative Dentistry, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4909-8657","authenticated-orcid":false,"given":"Fernando Gustavo","family":"Warchomicka","sequence":"additional","affiliation":[{"name":"Institute of Materials Science, Joining and Forming, Graz University of Technology, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lukas","family":"Seebacher","sequence":"additional","affiliation":[{"name":"Division of Restorative Dentistry, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0408-5991","authenticated-orcid":false,"given":"Bernhard","family":"Remschmidt","sequence":"additional","affiliation":[{"name":"Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4412-9589","authenticated-orcid":false,"given":"Marcus","family":"Rieder","sequence":"additional","affiliation":[{"name":"Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1531-3144","authenticated-orcid":false,"given":"Lumnije","family":"Kqiku-Biblekaj","sequence":"additional","affiliation":[{"name":"Division of Restorative Dentistry, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8858-6349","authenticated-orcid":false,"given":"Alwin","family":"Sokolowski","sequence":"additional","affiliation":[{"name":"Division of Restorative Dentistry, Periodontology and Prosthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,11,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e455","DOI":"10.1016\/j.dental.2021.06.007","article-title":"Fracture Resistance of Endodontically-Treated Maxillary Premolars Restored with Different Type of Posts and Direct Composite Reconstructions: A Systematic Review and Meta-Analysis of in Vitro Studies","volume":"37","author":"Iaculli","year":"2021","journal-title":"Dent. 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Materials, 12.","DOI":"10.3390\/ma12121983"}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/17\/22\/5611\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T16:33:50Z","timestamp":1760114030000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/17\/22\/5611"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,11,17]]},"references-count":18,"journal-issue":{"issue":"22","published-online":{"date-parts":[[2024,11]]}},"alternative-id":["ma17225611"],"URL":"https:\/\/doi.org\/10.3390\/ma17225611","relation":{},"ISSN":["1996-1944"],"issn-type":[{"type":"electronic","value":"1996-1944"}],"subject":[],"published":{"date-parts":[[2024,11,17]]}}}