Numerical analysis of the anti-fracture intensity of packed and repaired tooth in different cavity capacities / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 105-107, 2008.
Article
Dans Chinois
| WPRIM
| ID: wpr-230645
ABSTRACT
This study was aimed to assess the stress distribution of different capacity of class I cavity after composite resin filling. A three-dimensional finite element made of the maxillary second molar was constructed by spiral CT scan technology. Based on this model, stress distribution in tooth was analyzed before and after post-core restorations with 5 different capacities of class I cavity. When the circle triangle of class I cavities being under 50N vertical pressures, the cavity capacity increased from 3.3 mm to 3.7 mm, the maximum tensile stress values of the composite resin restorations being 3 times those of normal tooth, which were 14.872 MPa, 16.682 MPa and 17.589 MPa, 17.307 MPa and17.912 MPa. Obviously, the effect of different capacities of class I cavity on the maximum stress value enduring ability of teeth was samll, but in the analysis model, the enduring ability of teeth was reduced when the molars were filled with resin.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Anatomopathologie
/
Produits d'obturation des canaux radiculaires
/
Simulation numérique
/
Imagerie diagnostique
/
Chimie
/
Restauration coronoradiculaire
/
Résines composites
/
Analyse des éléments finis
/
Imagerie tridimensionnelle
/
Tomodensitométrie hélicoïdale
Type d'étude:
Etude diagnostique
Limites du sujet:
Humains
langue:
Chinois
Texte intégral:
Journal of Biomedical Engineering
Année:
2008
Type:
Article
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