{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,24]],"date-time":"2026-07-24T06:07:20Z","timestamp":1784873240707,"version":"3.55.0"},"reference-count":45,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T00:00:00Z","timestamp":1759881600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"BEGO Implant Systems (Germany)","award":["1699\/22"],"award-info":[{"award-number":["1699\/22"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JFB"],"abstract":"<jats:p>The aim of this pilot in vitro study is to investigate the fracture strength of hybrid abutment crowns (HACs) made of a 3D-printable, tooth-colored, ceramic-reinforced composite (CRC). Based on an upper first premolar, a crown was designed, and specimens were additively fabricated from a composite material (VarseoSmile Crown plus) (N = 32). The crowns were bonded to standard abutments using a universal resin cement. Half (n = 16) of the samples were subjected to artificial aging, during which three samples suffered minor damage. All specimens were mechanically loaded at an angle of 30\u00b0 to the implant axis. In addition, an FEM simulation was computed. Statistical analysis was performed at a significance level of p &lt; 0.05. The mean fracture load without aging was 389.04 N (SD: 101.60 N). Two HACs suffered screw fracture, while the crowns itself failed in all other specimens. In the aged specimens, the mean fracture load was 391.19 N (SD: 143.30 N). The failure mode was predominantly catastrophic crown fracture. FEM analysis showed a maximum compressive stress of 39.79 MPa, a maximum tensile stress of 173.37 MPa and a shear stress of 60.29 MPa when loaded with 389 N. Within the limitations of this pilot study, the tested 3D-printed hybrid abutment crowns demonstrated fracture resistance above a clinically acceptable threshold, suggesting promising potential for clinical application. However, further investigations with larger sample sizes, control groups, and clinical follow-up are required.<\/jats:p>","DOI":"10.3390\/jfb16100375","type":"journal-article","created":{"date-parts":[[2025,10,8]],"date-time":"2025-10-08T14:06:53Z","timestamp":1759932413000},"page":"375","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Fracture Resistance of 3D-Printed Hybrid Abutment Crowns Made from a Tooth-Colored Ceramic Filled Hybrid Composite: A Pilot Study"],"prefix":"10.3390","volume":"16","author":[{"given":"Josef","family":"Schweiger","sequence":"first","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt-J\u00fcrgen","family":"Erdelt","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabel","family":"Lente","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Edelhoff","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2391-5399","authenticated-orcid":false,"given":"Tobias","family":"Graf","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2630-2635","authenticated-orcid":false,"given":"Oliver","family":"Schubert","sequence":"additional","affiliation":[{"name":"Department of Prosthetic Dentistry, University Hospital, LMU Munich, 80336 Munich, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,10,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1111\/j.1600-0501.2012.02547.x","article-title":"Systematic review of the survival rate and the incidence of biological, technical, and aesthetic complications of single crowns on implants reported in longitudinal studies with a mean follow-up of 5 years","volume":"23","author":"Jung","year":"2012","journal-title":"Clin. 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