Numerical investigation of the factors affecting interfacial stresses in an MOD restored tooth by auto-meshed finite element method.
J Oral Rehabil
; 28(6): 517-25, 2001 Jun.
Article
em En
| MEDLINE
| ID: mdl-11422677
ABSTRACT
Many researches have addressed the high correlation between the fracture of restored teeth and the prepared cavity geometry. In addition, concerns about bonding versus debonding dental materials from cavity walls and different occlusal force conditions could also alter the mechanical responses in a restored tooth. This study employed an automatic mesh procedure to investigate the mechanical interactions between different interfacial conditions and cavity parameters such as pulpal wall depth under different chewing functions. The results indicated that when occlusal force was applied directly on the tooth, it could increase unfavourable stress dramatically. When interfacial fixation was simulated as the contact condition between the tooth tissue and restorative material, it might increase the fracture potential exponentially compared with the bonded interface. For pulpal wall depth analyses, greater risks of fracture for the remaining tooth were observed in deeper cavity of mesio-occlusal-distal (MOD) restorations and the existence of a pulpal wall is essential even it is only 1 mm above the gingival wall.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Dente
/
Análise de Elementos Finitos
/
Preparo da Cavidade Dentária
/
Restauração Dentária Permanente
/
Modelos Biológicos
Tipo de estudo:
Etiology_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Oral Rehabil
Ano de publicação:
2001
Tipo de documento:
Article
País de afiliação:
Taiwan
País de publicação:
ENGLAND
/
ESCOCIA
/
GB
/
GREAT BRITAIN
/
INGLATERRA
/
REINO UNIDO
/
SCOTLAND
/
UK
/
UNITED KINGDOM