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
Artículo
en Inglés
| 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:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Pilares Dentales
/
Prótesis Dental de Soporte Implantado
/
Análisis de Elementos Finitos
/
Análisis del Estrés Dental
Tipo de estudio:
Estudios de evaluación
Límite:
Humanos
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2011
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Catholic University of Minais Gerais/BR
/
University of São Paulo/BR
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