2012
DOI: 10.1016/j.jpor.2011.07.001
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Evaluation of the structural behavior of three and four implant-supported fixed prosthetic restorations by finite element analysis

Abstract: The results from the patient analyzed showed that fixed support prostheses on three implants are not recommended from a structural point of view because they do not adequately support occlusal loads. Excessive stress in the superstructure and the cortical bone can be expected, which would anticipate the failure of the restoration. Fixed support prostheses on four implants with a cantilever length of 10mm properly resist occlusal loading.

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Cited by 20 publications
(16 citation statements)
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“…The proposal of a design that would provide spacing between the metal bar and the support cylinder shoulder, allowing, after pressing, for the formation of a resin collar that would join these structures, sought greater occlusal load absorption and better dissipation among the implants, avoiding direct contact between metals. Studies that evaluated stress concentrations on full prosthesis upon the edentulous mandible revealed an overload on the distal implant 4,6 . Even when distal angled implants were selected, with the possibility of a stress concentration reduction of up to 17%, the stress accumulation for cantilever adjacent implants still persists 20 .…”
Section: Discussionmentioning
confidence: 99%
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“…The proposal of a design that would provide spacing between the metal bar and the support cylinder shoulder, allowing, after pressing, for the formation of a resin collar that would join these structures, sought greater occlusal load absorption and better dissipation among the implants, avoiding direct contact between metals. Studies that evaluated stress concentrations on full prosthesis upon the edentulous mandible revealed an overload on the distal implant 4,6 . Even when distal angled implants were selected, with the possibility of a stress concentration reduction of up to 17%, the stress accumulation for cantilever adjacent implants still persists 20 .…”
Section: Discussionmentioning
confidence: 99%
“…Alternatives for planning effective frameworks have been discussed in several studies 8,[12][13][14][15] . Despite the advances, no evidence has been observed 4,6,8,11 that complement the simplicity proposed by Maló et al 2,3 .…”
Section: Introductionmentioning
confidence: 88%
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“…The finite element analysis is a proven theoretical technique that is used to solve engineering problems and can be an alternative for studies of clinical samples, for which data collection of in vivo data is impossible or scientifically questionable (16). There are some limitations in case of emulating the example by FEA.…”
Section: Discussionmentioning
confidence: 99%