title: Three-dimensional finite element analysis of anterior two-unit cantilever resin-bonded fixed dental prostheses.
abstract: The aim of this study was to evaluate the influence of different framework materials on biomechanical behaviour of anterior two-unit cantilever resin-bonded fixed dental prostheses (RBFDPs). A three-dimensional finite element model of a two-unit cantilever RBFDP replacing a maxillary lateral incisor was created. Five framework materials were evaluated: direct fibre-reinforced composite (FRC-Z250), indirect fibre-reinforced composite (FRC-ES), gold alloy (M), glass ceramic (GC), and zirconia (ZI). Finite element analysis was performed and stress distribution was evaluated. A similar stress pattern, with stress concentrations in the connector area, was observed in RBFDPs for all materials. Maximal principal stress showed a decreasing order: ZI>M>GC>FRC-ES>FRC-Z250. The maximum displacement of RBFDPs was higher for FRC-Z250 and FRC-ES than for M, GC, and ZI. FE analysis depicted differences in location of the maximum stress at the luting cement interface between materials. For FRC-Z250 and FRC-ES, the maximum stress was located in the upper part of the proximal area of the retainer, whereas, for M, GC, and ZI, the maximum stress was located at the cervical outline of the retainer. The present study revealed differences in biomechanical behaviour between all RBFDPs. The general observation was that a RBFDP made of FRC provided a more favourable stress distribution.
authors: Department of Restorative Dentistry and Endodontology, Dental School, Ghent University Hospital, Ghent University, De Pintelaan 185/P8, 9000 Gent, Belgium.
authors: Filip
authors: 0000-0002-0295-8680
authors: F
authors: Keulemans
authors: Department of Biomaterials Science, BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland ; Department of Crown and Bridge, School of Life Dentistry at Tokyo, The Nippon Dental University, 1-9-20 Fujimi, Chiyoda-ku, Tokyo 102-8158, Japan.
authors: Akikazu
authors: A
authors: Shinya
authors: Department of Biomaterials Science, BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland.
authors: Lippo V J
authors: LV
authors: Lassila
authors: Department of Biomaterials Science, BioCity Turku Biomaterials Research Program, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, Finland.
authors: Pekka K
authors: PK
authors: Vallittu
authors: Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Mahlerlaan 3004, 1081 LA Amsterdam, Netherlands.
authors: Cornelis J
authors: CJ
authors: Kleverlaan
authors: Department of Dental Materials Science, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and VU University Amsterdam, Mahlerlaan 3004, 1081 LA Amsterdam, Netherlands.
authors: Albert J
authors: AJ
authors: Feilzer
authors: Department of Restorative Dentistry and Endodontology, Dental School, Ghent University Hospital, Ghent University, De Pintelaan 185/P8, 9000 Gent, Belgium.
authors: Roeland J G
authors: RJ
authors: De Moor
mesh_terms: D000044:Dental Abutments; D001840:Dental Bonding; D017266:Dental Prosthesis; D003799:Dental Stress Analysis; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D008962:Models, Theoretical; D018704:Orthodontic Retainers; D012117:Resins, Synthetic / Q000494:pharmacology*
chemical_list: D012117:Resins, Synthetic