{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T16:13:46Z","timestamp":1783786426379,"version":"3.55.0"},"reference-count":37,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2024,2,28]],"date-time":"2024-02-28T00:00:00Z","timestamp":1709078400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100022105","name":"Oral Reconstruction Foundation","doi-asserted-by":"publisher","award":["ORF22001"],"award-info":[{"award-number":["ORF22001"]}],"id":[{"id":"10.13039\/501100022105","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Oral Implants Res"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Investigate survival and technical complications of two\u2010unit posterior implant\u2010supported cantilever made of monolithic zirconia on titanium\u2010base abutments (Zr\u2010TiB) vs. porcelain\u2010fused\u2010to\u2010metal on castable gold abutments (PFM\u2010GA) using two different implant connections, internal butt\u2010joint (IBJ) and internal conical (IC).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Forty\u2010eight implants (4.3\u2009mm diameter) were divided into four groups (<jats:italic>n<\/jats:italic>\u2009=\u200912) to support 2\u2010unit mandibular premolar cantilevers with two different materials (Zr\u2010TiB vs. PFM\u2010GA) and two connection types (IBJ vs. IC). Tested groups were as follows: (1) IBJ\/Zr\u2010TiB; (2) IBJ\/PFM\u2010GA; (3) IC\/Zr\u2010TiB; and (4) IC\/PFM\u2010GA. Specimens were thermomechanical aged (1,200,000\u2009cycles, 98\u2009N, 5\u201355\u00b0C) with occlusal axial load on the pontic. Catastrophic and non\u2010catastrophic events were registered, and removal torque values measured before and after aging. Specimens surviving aging were subjected to loading until failure. Survival, total complication rates, torque loss (%), and bending moments were calculated.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>From 48 specimens, 38 survived aging. Survival rates significantly varied from 16.7% (IC\/PFM\u2010GA) to 100% (IBJ\/Zr\u2010TiB; IBJ\/PFM\u2010GA; IC\/Zr\u2010TiB) (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01). Internal conical connection revealed significantly higher torque loss (IC\/ZrTiB \u2013 67%) compared to internal butt\u2010joint (IBJ\/Zr\u2010TiB \u2013 44%; IBJ\/PFM\u2010GA \u2013 46%) (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.01). Bending moments were higher in internal butt\u2010joint connections than in internal conical (<jats:italic>p<\/jats:italic>\u2009&lt;\u2009.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion and Clinical Implications<\/jats:title><jats:p>Two\u2010unit posterior implant\u2010supported cantilever FDPs replacing mandibular premolars composed of monolithic zirconia on titanium\u2010base abutments demonstrated higher mechanical stability compared to porcelain\u2010fused\u2010to\u2010metal on castable gold abutments in this in\u00a0vitro study. The internal conical connection combined with porcelain\u2010fused\u2010to\u2010metal on gold abutments revealed a high number of failures; therefore, their clinical use may be considered cautiously for this indication.<\/jats:p><\/jats:sec>","DOI":"10.1111\/clr.14251","type":"journal-article","created":{"date-parts":[[2024,2,28]],"date-time":"2024-02-28T11:01:06Z","timestamp":1709118066000},"page":"1042-1053","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Mechanical stability of posterior implant\u2010supported monolithic zirconia cantilever on titanium\u2010base abutments. 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