Analise do complexo tensão-deformação e mecanismo de falha de pre-molares superiores com diferentes morfologias radiculares e redução sequencial de estrutura dental / Analysis of stress-strain complex and failure mecanism for maxilary premolars with different root morphology and sequential loss of dental structure
AUTOR(ES)
Paulo Vinicius Soares
DATA DE PUBLICAÇÃO
2008
RESUMO
The aim of this work was to evaluate the biomechanical behavior of restored maxillary human premolar throughout stress-strain, stress distribtion analysis and fracture resistance with different root morphologies and the cavity preparation design. Forty maxillary premolars with similar coronary dimensions were selected and divided into 4 morphology categories (n=10): Uni- single rooted; Fabiradicular premolar with apical furcation; FM- biradicular premolar with medium furcation; FC- biradicular premolar with cervical furcation. Each tooth received seven treatments with structural reduction: H- sound tooth (control group), Ooclusal cavity; OD- disto-occlusal cavity; MOD- mesio-occlusal-distal cavity; MOD+A- endodontic access; TE- endodontic tretment; RC- restoration with composite resin. The biomechanical behavior of the teeth was analyzed by methodologies association: 1)Finite Element Analysis, 2) Strain-gauge method and 3) Fracture resistance test and Failure mode), and was made the fracture mode classification. It was observed that dental structure loss promotes high stress concentration inside the teeth and cuspal deflection. The root morphology influenced cusp and proximal surface strain. The cervical furcation was the main factor of strain data increase. This study showed that the association of different methodologies is an important tool for biomechanical analysis
ASSUNTO(S)
fraturas dentes - raizes teeth roots fracture restoration (dentistry) restauração (odontologia)
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000436815Documentos Relacionados
- Análises tensão-deformação de estruturas de solo grampeado.
- Modelagem matemática de curvas tensão-deformação
- ESTUDO TENSÃO-DEFORMAÇÃO DA BARRAGEM DE IRAPÉ
- Stress-strain behavior of two horizons of a residual soil from gneiss
- Estudo tensão-deformação de um enrocamento visando barragens de enrocamento com face de concreto.