Data/hora: 17/06/2024 13:08:59

Provedor de dados: 	77	
País: 	Chile	
Título: 	Computer Graphics Applied to Anatomy: A Study of two Bio-CAD Modeling Methods on Finite Element Analysis of Human Edentulous Hemi-Mandible	
Autores: 	Rossi,Ana Cláudia; Freire,Alexandre Rodrigues; Botacin,Paulo Roberto; Caria,Paulo HenriqueFerreira; Prado,Felippe Bevilacqua.	
Data: 	2014-09-01	
Ano: 	2014	
Palavras-chave: 	Computational modeling; Mandible; Finite element analysis; Biomechanics.	
Resumo: 	Modeling is a step to perform a finite element analysis. Different methods of model construction are reported in literature, as the Bio-CAD modeling. The purpose of this study was to perform a model evaluation and application using two methods of Bio-CAD modeling from human edentulous hemi-mandible on the finite element analysis. From CT scans of dried human skull was reconstructed a stereolithographic model. Two methods of modeling were performed: STL conversion approach (Model 1) associated to STL simplification and reverse engineering approach (Model 2). For finite element analysis was used the action of lateral pterygoid muscle as loading condition to assess total displacement (D), equivalent von-Mises stress (VM) and maximum principal stress (MP). Two models presented differences on the geometry regarding surface number (1834 (model 1); 282 (model 2)). Were observed differences in finite element mesh regarding element number (30428 nodes/16683 elements (model 1); 15801 nodes/8410 elements (model 2). D, VM and MP stress areas presented similar distribution in two models. The values were different regarding maximum and minimum values of D (ranging 0­0.511 mm (model 1) and 0­0.544 mm (model 2), VM stress (6.36E-04­11.4 MPa (model 1) and 2.15E-04­14.7 MPa (model 2) and MP stress (-1.43­9.14 MPa (model 1) and -1.2­11.6 MPa (model 2). From two methods of Bio-CAD modeling, the reverse engineering presented better anatomical representation compared to the STL conversion approach. The models presented differences in the finite element mesh, total displacement and stress distribution.	
Tipo: 	Journal article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022014000300011	
Editor: 	Sociedad Chilena de Anatomía	
Formato: 	text/html	
Fonte: 	International Journal of Morphology  v.32 n.3 2014