{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T22:15:17Z","timestamp":1790806517315,"version":"4.1.0"},"reference-count":47,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2022,12,26]],"date-time":"2022-12-26T00:00:00Z","timestamp":1672012800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Prosthodontics"],"published-print":{"date-parts":[[2023,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>To evaluate the fracture load and stress magnitude of different retainer designs of minimally invasive cantilever resin\u2010bonded fixed dental prostheses (RBFDPs) after artificial aging.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>Fifty caries\u2010free human mandibular molars were prepared as abutments for cantilever fixed dental prostheses using different retainer designs: one wing (OW), two wings (TW), inlay ring (IR), lingual coverage (LC), and occlusal coverage (OC). Computer\u2010aided design and computer\u2010aided manufacturing were used for milling the RBFDPs using fiber\u2010reinforced composite (FRC), and the restorations were adhesively bonded. The specimens were then subjected to thermomechanical aging and loaded until failure. The 3D finite element analysis (FEA) was performed with five models of retainer designs similar to the in vitro test. Modified von Mises stress values on enamel, dentine, luting resin, and restorations were examined. Data were analyzed with Kruskal\u2013Wallis and Mann\u2013Whitney <jats:italic>U<\/jats:italic> tests (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A statistically significant difference (<jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.001) was found between all groups except between IR and LC and between OW and TW designs, with the highest mean failure load detected for OC (534.70\u00a0N) and the lowest detected for OW (129.80\u00a0N). With regard to failure mode, OW, TW, and LC showed more incidences of favorable failure patterns than IR and OC designs. FEA showed that FRC transmitted low stresses in tooth structure and high stresses to the luting resin.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>LC and OC designs can be used to design cantilever RBFDPs in premolar area. IR design transmitted more stresses to the tooth structure and resulted in 30% catastrophic failure. OW and TW were below the normal occlusal force and should be carefully used.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.13626","type":"journal-article","created":{"date-parts":[[2022,12,11]],"date-time":"2022-12-11T06:38:22Z","timestamp":1670740702000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Effect of different designs of minimally invasive cantilever resin\u2010bonded fixed dental prostheses replacing mandibular premolar: Long\u2010term fracture load and 3D finite element analysis"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9773-1042","authenticated-orcid":false,"given":"Ammar T.","family":"Kasem","sequence":"first","affiliation":[{"name":"Fixed Prosthodontics Department, Faculty of Dentistry Mansoura University  Mansoura Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abdallah 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