Advanced search
Start date
Betweenand

Evaluation of stress distribution on immediate loading mandibular full-arch implant-supported fixed prosthesis by using a FEA-3D.

Grant number: 11/15172-6
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2012
Effective date (End): July 31, 2013
Field of knowledge:Health Sciences - Dentistry
Principal researcher:Wirley Goncalves Assuncao
Grantee:Mayara Barbosa Ferreira
Home Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil

Abstract

The aim of this study is to compare the stress distribution of three different types of immediate loading implant-supported prosthesis with the conventional protocol of two surgical stages by using a Non-linear Three-Dimensional Finite Element Analysis. A total of four mathematical models representing an edentulous mandible with a full-arch prosthesis supported by four external hexagon implants (3.75 mm x 11.5 mm) with a 10-mm distal cantilever will be fabricated. In group A (control) - implants will be rigidly splinted by means a metallic superstructure and will be submitted to the conventional loading protocol of two surgical stages; in group B - implants will not be rigidly splinted (splinted by means acrylic resin), and will be submitted to immediate loading protocol; in group C - implants will be rigidly splinted by means a metallic superstructure and will be submitted to immediate loading protocol; in group D - implants will not be rigidly splinted (splinted by means acrylic resin), and a pre-manufactured distal bar will be inserted in the cantilever area, and will be submitted to immediate loading protocol. The mandible will be constructed by using a software (Simpleware) through computed tomography images of an edentulous mandible. Implants and prosthetic components will be fabricated by means a CAD software (SolidWorks). In order to simulate the immediate loading of implants (groups B, C and D) non-linear and frictional contact elements (0.3) will be inserted at the bone/implant interface. Models will be imported to the finite element analysis software (Abaqus) and a 100-N oblique (30 degrees) unilateral posterior load will be applied. Models will be fixed by vector forces on the insertion of masticatory muscles regions. The maximum, minimum principal stresses, von Mises stress and displacements on the -x, -y and -z axes will be determined. A descriptive statistical analysis will be performed.

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FERREIRA, MAYARA B.; BARAO, VALENTIM A.; DELBEN, JULIANA A.; FAVERANI, LEONARDO P.; HIPOLITO, ANA CAROLINA; ASSUNCAO, WIRLEY G. Non-linear 3D finite element analysis of full-arch implant-supported fixed dentures. Materials Science & Engineering C-Materials for Biological Applications, v. 38, p. 306-314, MAY 1 2014. Web of Science Citations: 11.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
FERREIRA, Mayara Barbosa. Avaliação da distribuição de tensões em próteses do tipo protocolo mandibular para carregamento imediato por meio do MEF-3D. 2013. 137 f. Master's Dissertation - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Odontologia (Campus de Araçatuba)..

Please report errors in scientific publications list by writing to: cdi@fapesp.br.