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
Article
Dans Anglais
| 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.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Piliers dentaires
/
Prothèse dentaire implanto-portée
/
Analyse des éléments finis
/
Analyse du stress dentaire
Type d'étude:
Études d'évaluation
Limites du sujet:
Humains
langue:
Anglais
Texte intégral:
J. appl. oral sci
Thème du journal:
Dentisterie
Année:
2011
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Catholic University of Minais Gerais/BR
/
University of São Paulo/BR
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