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Biomechanical evaluation of internal hexagon implant supported prostheses on anterior maxillary area with different bone anchorages: study by 3-D finite element analysis

Grant number: 12/21065-0
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): June 01, 2013
Effective date (End): May 31, 2014
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Fellippo Ramos Verri
Grantee:Ronaldo Silva Cruz
Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil


The internal hexagon connection has been largely used to implant supported restorations, since it enables decrease of mechanical complications on the implants. Furthermore, study of placed implants on anterior maxillary region is essential to get clinical success since this region requires better expertise to satisfactory placement. So, the aim of this study will be to analyze the biomechanical effect of single internal hexagon implant supported prostheses on anterior maxillary region, varying bone tissue anchorage degree: a) conventional placement on bone; b) bicorticalization; c) sinus lift with bicorticalization; using 3-D finite element analysis. The bone model will be modeled on Invesalius software (CTI, São Paulo, Brazil) and others structures will be modeled using Rhinoceros 3D 4.0 software (NURBS Modeling for Windows, USA) and SolidWorks 2011 software (SolidWorks Corp, USA). Three models representing each clinical situation will be simulated. Each model will be constituted by a bone block, with an implant of 4 x 10 mm placed (Conexão Sistema de Prótese, Ltda, São Paulo, Brazil) and supporting a metaloceramic crown. All models will be processed by finite element software FEMAP v.10.2 (Siemens Product Lifecycle Management Software Inc.USA), including mesh generations, restrictions and posterior results visualization. 178 N of load will be applied at 0º, 30º and 60º degrees. The results will be visualized by von Mises and Maximum Principal Tension maps, including some individual structure plotting where necessary to evaluate the stress distribution on system implant/bone tissue. (AU)

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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)
VERRI, FELLIPPO RAMOS; CRUZ, RONALDO SILVA; ARAUJO LEMOS, CLEIDIEL APARECIDO; DE SOUZA BATISTA, VICTOR EDUARDO; FARIA ALMEIDA, DANIEL AUGUSTO; GONCALES VERRI, ANA CAROLINE; PELLIZZER, EDUARDO PIZA. Influence of bicortical techniques in internal connection placed in premaxillary area by 3D finite element analysis. COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING, v. 20, n. 2, p. 193-200, . (11/01045-2, 12/21065-0)

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