Stress analysis of a fixed implant-supported denture by the finite element method (FEM) when varying the number of teeth used as abutments
J. appl. oral sci
;
19(6): 655-661, Nov.-Dec. 2011. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-610883
ABSTRACT
OBJECTIVES:
In some clinical situations, dentists come across partially edentulous patients, and it might be necessary to connect teeth to implants. The aim of this study was to evaluate a metal-ceramic fixed tooth/implant-supported denture with a straight segment, located in the posterior region of the maxilla, when varying the number of teeth used as abutments. MATERIAL ANDMETHODS:
A three-element fixed denture composed of one tooth and one implant (Model 1), and a four-element fixed denture composed of two teeth and one implant (Model 2) were modeled. A 100 N load was applied, distributed uniformly on the entire set, simulating functional mastication, for further analysis of the SEQV (Von Mises) principal stresses, which were compared with the flow limit of the materials.RESULTS:
In a quantitative analysis, it may be observed that in the denture with one tooth, the maximum SEQV stress was 47.84 MPa, whereas for the denture with two teeth the maximum SEQV stress was 35.82 MPa, both located in the region between the pontic and the tooth.CONCLUSION:
Lower stresses were observed in the denture with an additional tooth. Based on the flow limit of the materials, porcelain showed values below the limit of functional mastication.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Dente Suporte
/
Prótese Dentária Fixada por Implante
/
Análise de Elementos Finitos
/
Análise do Estresse Dentário
Tipo de estudo:
Estudos de avaliação
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2011
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Catholic University of Minais Gerais/BR
/
University of São Paulo/BR
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