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1.
Arq. odontol ; 49(02): 52-59, 2013. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-850148

RESUMO

Aim: The present study aimed to analyze the stress distribution in the dentoalveolar structures of a maxillary central incisor submitted to two situations of impact loading. Materials and Methods: The following loading forces were applied using a three-dimensional finite element model: a force of 500 N at an angle of 45° on the buccal surface of the crown and a 2000 N force acting in the same direction and surface of the tooth. Results: Harmful stress was observed in the second situation, suggesting damage to both the tooth and adjacent tissue. However, the damage found in soft tissues such as dental pulp, was negligible. Conclusion: Injuries resulting from the traumatic situations were more damaging to the integrity of the tooth and its associated hard-tissue structures.


Assuntos
Imageamento Tridimensional , Traumatismos Dentários , Fenômenos Biomecânicos , Metodologias Computacionais
2.
Arq. odontol ; 49(2): 52-59, 2013. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-698344

RESUMO

Aim: The present study aimed to analyze the stress distribution in the dentoalveolar structures of a maxillary central incisor submitted to two situations of impact loading. Materials and Methods: The following loading forces were applied using a three-dimensional finite element model: a force of 500 N at an angle of 45° on the buccal surface of the crown and a 2000 N force acting in the same direction and surface of the tooth. Results: Harmful stress was observed in the second situation, suggesting damage to both the tooth and adjacent tissue. However, the damage found in soft tissues such as dental pulp, was negligible. Conclusion: Injuries resulting from the traumatic situations were more damaging to the integrity of the tooth and its associated hard-tissue structures.


Assuntos
Análise de Elementos Finitos , Imageamento Tridimensional , Traumatismos Dentários , Fenômenos Biomecânicos , Metodologias Computacionais
3.
Braz. dent. j ; 13(3): 201-204, 2002. ilus, tab
Artigo em Inglês | LILACS, BBO - Odontologia | ID: lil-338544

RESUMO

The use of computers as an auxiliary instrument for case evaluation and procedures in health sciences is not new, and their advantages are well known. A growing number of orthodontists are using computerized systems for cephalometric analysis. Thus, this study evaluated the reliability of both computerized and manual methods used for creating profile cephalograms. Fifty profile radiographs were selected from the files of the Post-Graduate Course in Orthodontics at the Dental School of the Federal University of Rio de Janeiro. The good quality of the material was the only necessary requirement for selection. Results were submitted to the interclass correlation coefficient and a reliable similarity between cephalometric data obtained through both evaluated methods was found. However, the clinical utilization of computerized cephalometric analysis is not absolutely reliable


Assuntos
Cefalometria , Metodologias Computacionais , Intensificação de Imagem Radiográfica , Interpretação de Imagem Radiográfica Assistida por Computador , Reprodutibilidade dos Testes , Tecnologia
4.
Rev. Fac. Odontol. Bauru ; 9(3/4): 97-103, jul.-dez. 2001. ilus, tab
Artigo em Português | LILACS, BBO - Odontologia | ID: lil-321813

RESUMO

Os diversos avanços ocorridos nos últimos anos tanto na Odontologia como nas Ciências de Computaçäo permitiram uma aproximaçäo entre estas duas áreas. Através de recursos computacionais tornou-se possível a análise e a soluçäo de problemas complexos encotrados no tratamento de pacientes com dentições comprometidas. Esses recursos envolvem, entre outros, a análise de fotoelasticidade, o método de elementos finitos e a extensometria. Neste artigo säo relatadas as aplicaçöes desses procedimentos naresoluçäo de carregamentos de próteses sobre implantes, bem como as potencialidades que esses recursos apresentam para a pesquisa


Assuntos
Metodologias Computacionais , Engenharia Biomédica/métodos , Engenharia Biomédica/tendências , Planejamento de Prótese Dentária/métodos , Planejamento de Prótese Dentária/tendências
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