Publicação: Influence of severity and restoration of non-carious cervical lesion on biomechanical behavior and predictability of dental structure failure
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Área do conhecimento
CNPQ::CIENCIAS DA SAUDE::ODONTOLOGIA
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Coorientador
Machado, Alexandre Coelho
Resumo
Objective: to analyze the biomechanical behavior and the predictability of dental structure failure with different levels of severity of non-carious cervical lesions (NCCL), restored or not with composite resin, in the application of three different types of loads, using the finite element analysis (FEA). Methodology: based on an upper central incisor model, a sound tooth model and four others with NCCL of different depth levels (0.5 mm, 1.0 mm, 1.5 mm and 2, were generated in CAD software); beside the restored models with composite resin of these different depth. All virtual models received three types of loading (100 N): loading of 45º with the surface of the palatal middle third (PMT), same angle with the surface of the palatal incisal third (PIT) and axial load in the incisal edge (IE). The data were obtained in MPa using the Maximum Principal Stress, Minimum Principal Stress and Mechanical Fatigue criteria. Results: The Maximum Principal Stress and Minimum demonstrated a higher concentration of stress in models with NCCL associated with the type of loading PIT, followed by PMT and, consequently, generating lower survival on cervical structure. The models with restoration brought a homogeneous pattern of stress distribution and similar to sound tooth model. Conclusion: the presence of NCCL promoted higher stress concentration in the cervical dental structure, being progressively higher as depth the lesion. The composite resin restoration proved to be effective in the control of NCCL’s etiological factors.
Abstract
Palavras-chave
Desgaste dos dentes, Restauração dentária permanente, Oclusão dentária
Citação
PERES, Thiago Silva. Influence of severity and restoration of non-carious cervical lesion on biomechanical behavior and predictability of dental structure failure. 2020. 28 f. Trabalho de Conclusão de Curso (Graduação em Odontologia) – Universidade Federal de Uberlândia, Uberlândia, 2020.