Influence of Different Multilayer Zirconia Materials on the In Vitro Load‐Bearing Capacity of Resin‐Bonded Fixed Partial Dentures in the Posterior Region.
Objective: Comparison of the load‐bearing capacity and failure pattern of posterior resin‐bonded fixed partial dentures (RBFPDs) differing in retainer design, zirconia material, and vertical nesting position. Materials and Methods: RBFPDs replacing a maxillary first molar were fabricated with 2 reta...
| Publicado en: | Journal of Esthetic & Restorative Dentistry Vol. 38; no. 9; pp. 1854 - 1864 |
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| Autores principales: | , , , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Sep2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=196160546&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 196160546 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 14964155 9OJ jtl: Journal of Esthetic & Restorative Dentistry issn: 14964155 maglogo: Y pubinfo: dt: Sep2026 vid: 38 iid: 9 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 196160546 193751083 196160546 196160546 10.1111/jerd.70191 196160546 ppf: 1854 ppct: 10 formats: tig: atl: Influence of Different Multilayer Zirconia Materials on the In Vitro Load‐Bearing Capacity of Resin‐Bonded Fixed Partial Dentures in the Posterior Region. aug: au: Waldecker, Moritz Heller, Maria Sophie Rues, Stefan Rammelsberg, Peter Bömicke, Wolfgang affil: Department of Prosthetic Dentistry, Heidelberg University Hospital, University of Heidelberg, Heidelberg, Germany sug: subj: Dental Materials Analysis Denture, Partial, Fixed Dental Bonding Composite Resins Metals Stress, Mechanical Prosthesis Failure In Vitro Studies Dentures Molar Maxilla Analysis of Variance Post Hoc Analysis Acid Etching, Dental Materials Testing ab: Objective: Comparison of the load‐bearing capacity and failure pattern of posterior resin‐bonded fixed partial dentures (RBFPDs) differing in retainer design, zirconia material, and vertical nesting position. Materials and Methods: RBFPDs replacing a maxillary first molar were fabricated with 2 retainer designs (inlay‐retained, IR; wing‐retained, WR) and of 2 multilayer zirconia materials (3Y‐TZP and 5Y‐PSZ, 3Y/5Y; 5Y‐PSZ, 5Y). For 3Y/5Y blanks, 2 vertical nesting positions (center; top) were evaluated. For each group, 16 monolithic RBFPDs were fabricated. Half of the RBFPDs underwent artificial aging. Load‐bearing capacity (Fu) was tested under oblique loading. The data were statistically analyzed using Welch ANOVA and Dunnett‐T3 post hoc tests (α = 0.05). Results: No decementations or defects were observed after aging. Mean Fu ranged between 684 and 1216 N for IR‐RBFPDs and 1025–1617 N for WR‐RBFPDs. There was a clear hierarchy between the subgroups, with the lowest Fu recorded for restorations made of 5Y zirconia and the highest Fu for restorations fabricated from a centric position in 3Y/5Y blanks. Aging had no influence (p ≥ 0.526). Conclusions: Posterior RBFPDs made of multilayer 3Y‐TZP/5Y‐PSZ zirconia can be recommended for clinical trials. Vertical positioning in the blank influences the safety margin of the load‐bearing capacity. The use of 5Y‐PSZ should be critically scrutinized for this indication. Clinical Significance: Posterior resin‐bonded fixed partial dentures made of monolithic zirconia (3Y‐TZP) are a valuable treatment option. The opacity of the restorations limits their esthetics. Multilayer zirconia materials with color and/or material gradient can further improve the esthetics of monolithic zirconia restorations. Resin‐bonded fixed partial dentures made of multilayer zirconia materials differing in color and/or material gradient might be a viable alternative to restorations made of 3Y‐TZP zirconia in the posterior region. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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