Mechanical behavior of complete arch implant-supported prostheses with distal cantilevers fabricated from different digital material combinations.
Complete arch implant-supported prostheses (CAISPs) often require distal cantilevers; however, evidence on the influence of framework and veneering material combinations remains limited. The purpose of this in vitro study was to compare the mechanical behavior of 6 digitally fabricated material conf...
| Publicado en: | Journal of Prosthetic Dentistry Vol. 136; no. 1; pp. 239 - 250 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Elsevier B.V.
Jul2026
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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=194899050&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 194899050 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00223913 1ZB jtl: Journal of Prosthetic Dentistry issn: 00223913 maglogo: N pubinfo: dt: Jul2026 vid: 136 iid: 1 pid: 467 pub: Elsevier B.V. place: New York, New York artinfo: ui: 194899050 194899050 194899050 10.1016/j.prosdent.2026.03.006 194899050 ppf: 239 ppct: 11 formats: tig: atl: Mechanical behavior of complete arch implant-supported prostheses with distal cantilevers fabricated from different digital material combinations. aug: au: Rubiños, Nataly Mory Mosaddad, Seyed Ali Díaz, Pedro Revilla-León, Marta Gómez-Polo, Miguel affil: Collaborating Faculty Member, Postgraduate Program in Advanced Implant-Prosthodontics, Complutense University of Madrid (UCM), Madrid, Spain sug: subj: Dental Prosthesis, Implant-Supported Dental Implants Computer-Aided Design Dental Materials Materials Testing Evaluation In Vitro Studies Cobalt Chromium Compounds Titanium Polymers Dental Porcelain Composite Resins Microscopy Methods Two-Way Analysis of Variance Kruskal-Wallis Test Post Hoc Analysis Descriptive Statistics Stress, Mechanical ab: Complete arch implant-supported prostheses (CAISPs) often require distal cantilevers; however, evidence on the influence of framework and veneering material combinations remains limited. The purpose of this in vitro study was to compare the mechanical behavior of 6 digitally fabricated material configurations in CAISPs with 7.5- and 15-mm cantilevers. Thirty screw-retained CAISPs (n=5 per group) were fabricated: cobalt chromium with feldspathic ceramic (CRCO-C), titanium alloy with high-impact polymer composite (TI-HIPC), monolithic zirconia (ZTN), veneered zirconia with porcelain (ZF-C), ceramic-filled polyetheretherketone (BioHPP) with composite resin (B-RC), and BioHPP with high-impact polymer composite veneer (B-HIPC). The specimens were thermocycled (10 000 cycles, 5 to 55 °C) and cyclic loaded (110 N, 300 000 cycles). Flexural strength testing was performed at both cantilever lengths to record maximum load (FMax), veneer fracture load (FChipping), and vertical deflection. Fracture modes were examined under optical microscopy. The data were analyzed using 2-way ANOVA, the Kruskal–Wallis test, and post hoc tests (α=.05). At a 7.5-mm cantilever length, all groups except B-HIPC exceeded 900 N. CRCO-C (2098 ±43.8 N) and TI-HIPC (2060 ±115.5 N) showed the highest strength, followed by ZTN (1190 ±140.9 N), B-RC (1136 ±97.9 N), and ZF-C (910.6 ±272.5 N) (P <.001). At 15 mm, strength decreased by approximately 50% for B-RC and ZF-C, 35% for the TI-HIPC group and 24% for B-HIPC, while CRCO-C remained stable. Chipping resistance was highest for CRCO-C, followed by TI-HIPC and B-HIPC; milled composite resins showed greater resistance than conventional composite resins (P =.02). Deflection at Fmax was minimal (<0.3 mm) for CRCO-C and zirconia but higher for TI-HIPC and B-HIPC, particularly at 15 mm. At a 7.5-mm cantilever length, most tested material–design configurations achieved clinically acceptable fracture resistance. At 15 mm, values above the clinical threshold were observed only in the CRCO-C, TI-HIPC, and ZTN configurations. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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