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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Non-linear 3D finite element analysis of full-arch implant-supported fixed dentures

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Author(s):
Ferreira, Mayara B. [1] ; Barao, Valentim A. [2] ; Delben, Juliana A. [3] ; Faverani, Leonardo P. [4] ; Hipolito, Ana Carolina [1] ; Assuncao, Wirley G. [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 Sao Paulo - Brazil
[2] Univ Campinas UNICAMP, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, BR-13414903 Sao Paulo - Brazil
[3] Univ Estadual Paulista UNESP, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, BR-14801903 Sao Paulo - Brazil
[4] Univ Estadual Paulista UNESP, Aracatuba Dent Sch, Dept Surg & Gen Clin, BR-16015050 Sao Paulo - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Materials Science & Engineering C-Materials for Biological Applications; v. 38, p. 306-314, MAY 1 2014.
Web of Science Citations: 11
Abstract

Despite the necessity for faster clinical protocols for immediate loading of implant-supported dentures, there is a lack of biomechanical studies to confirm the rigid splinting effectiveness. We compared the stress in mandibular full-arch implant-supported fixed dentures under immediate loading through three-dimensional finite element analysis. Edentulous human mandible models were restored with a 4-implant fixed denture. Implants were splinted with a metallic framework and submitted to conventional loading (group A-control), with acrylic resin and submitted to immediate loading (group B), with a metallic framework and submitted to immediate loading (group C), and with acrylic resin and a prefabricated distal bar and submitted to immediate loading (group D). Models were supported by masticatory muscles. A 100-N oblique load was applied on the first molar. Group A presented the lowest stress and implant displacement values, whereas group D showed the highest values. In bone, groups under immediate loading exhibited the highest stress, whereas the group experiencing conventional loading showed an approximately 50% reduction. All groups submitted to immediate loading presented similar stress values in pen-implant bone. The loading protocol influenced the stress and implant displacement, but the design of the fixed denture did not affect the stress in the pen-implant bone. Rigid splinting of implants submitted to immediate loading is not essential for treatment success. (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/15172-6 - Evaluation of stress distribution on immediate loading mandibular full-arch implant-supported fixed prosthesis by using a FEA-3D.
Grantee:Mayara Barbosa Ferreira
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 10/09857-3 - Comparison of stress distribution in different mandibular implant-supported fixed dentures for immediate loading: non-linear analysis by 3D-FEA based on computed tomography
Grantee:Wirley Goncalves Assuncao
Support Opportunities: Regular Research Grants