Josete Meira - Profile on Academia.edu (original) (raw)

Papers by Josete Meira

Tensões térmicas e risco de lascamento em porcelana sobre zircônia: análise por elementos finitos

Resumos, 2013

Importância da simulação do ligamento periodontal em modelo de elementos finitos utilizado para previsão de fratura radicular em pré-molar superior endodonticamente tratado

Handbook of Oral Biomaterials, 2014

The constant pursuit of the scientific invention, R&D and adaption of cutting edge technology is ... more The constant pursuit of the scientific invention, R&D and adaption of cutting edge technology is an essential component of a world-view that changes the realities on how we live and survive today. The adaptation of new technology is growing tremendously in all fields including medicine and dentistry. It is getting more advanced day by day replacing all sort manual and tedious process in Dentistry creating a happy smile in a short time. Finte element analysis involves a series of computational procedures to calculate the stress in each element, which performs a model solution. Such a structural analysis allows the determination of stress resulting from external force, pressure, thermal change, and other factors. It is useful for indicating the mechanical aspects of biomaterials and human tissues which are difficult to be measured and analyzed in-vivo moreover it could consume a undefined timeliness. The results which are obtained can be studied using software where we can visualize within the FEM environment at variety of parameters and to identify the implications of finite element analysis. Analysis of stress of dental structures has been a topic of interest in the recent years with an objective of determining stresses in the dental structures and improvement of the mechanical strength of these structures. The present paper is on basic concept, applications and limitations of finite element method (FEM) in dentistry.

Intrusion of overerupted periodontally compromised posterior teeth using orthodontic mini implants: A mechanobiological finite element study

Orthodontics & Craniofacial Research, Sep 8, 2022

IntroductionThe intrusion of posterior teeth had been considered challenging up to the developmen... more IntroductionThe intrusion of posterior teeth had been considered challenging up to the development of orthodontic mini implants. In periodontally compromised teeth, the challenge is even greater, because of the root resorption risk due to periodontal ligament over‐compression. Still, the precise strategy to determine the force reduction level remains uncertain.ObjectiveThe objective of the study was to determine, by a finite element analysis (FEA), the force reduction needed to avoid root resorption and maintain the efficiency of orthodontic mechanics of periodontally compromised teeth similar to the sound one.MethodsAn anatomical model was constructed representing a premolar inserted into a maxillary bone. Based on the initial model (R0), three bone height loss conditions were simulated (R2 = 2 mm, R4 = 4 mm, and R6 = 6 mm). Two intrusive movements were simulated: pure intrusion (bilateral mini implant) and uncontrolled‐tipping intrusion (buccal mini implant). The hydrostatic stress at the periodontal ligament was used to evaluate the risk of root resorption due to over‐compression.ResultsFor bilateral mini implant intrusion, the force had to be decreased by 16%, 32% and 48% for R2, R4 and R6, respectively. For buccal mini implant intrusion, the required reductions were higher (20%, 36% and 56%). A linear relationship between the intrusive force reduction and the alveolar bone height loss was observed in both intrusion mechanics.ConclusionsAccording to the FE results, 8% or 9.3% of force reduction for each millimetre of bone height loss is suggested for intrusion with bilateral or buccal mini implant, respectively. The buccal mini implant anchorage must be associated with a supplemental strategy to avoid buccal crown tipping.

Microinfiltração e dureza Vickers em restaurações diretas de classe II

Pesquisa Odontológica Brasileira, 2000

Efeito férula e efeito espelho em pinos intra-radiculares

Brazilian Oral Research, 2008

Influência do módulo de elasticidade do pino e da direção do carregamento na concentração de tensões na raiz

RPG Revista da Pós-Graduação, 2006

Teste de lascamento da aresta em porcelana sobre zircônia e metal: análise por elementos finitos

Resumos, 2013

O mercúrio no consultório dentário: minimizando os riscos

Revista da Associação Paulista de Cirurgiões Dentistas, 2005

Estudo por elementos finitos da influência da férula na fratura radicular vertical

Influência dos contatos oclusais na distribuição de tensões em porcelana sobre zircônia: Análise por elementos finitos

Resumos, 2013

Influência do protocolo de resfriamento e do material de infraestrutura nas tensões residuais térmicas em porcelanas de cobertura

Brazilian Oral Research, 2016

Analyze the presence of occlusal interference and non-carious cervical lesions

Dental Materials, 2014

Biomechanical behavior of anterior teeth restored with ceramic veneers

Dental Materials, 2014

Revista da Faculdade de Odontologia - UPF, Apr 6, 2011

Marginal fit of cast titanium copings related to investments and casting techniques Desajuste cer... more Marginal fit of cast titanium copings related to investments and casting techniques Desajuste cervical de fundições de titânio tipo casquete em função de revestimentos e técnicas

Peri-implant bone resorption risk of anterior maxilla narrow single implants: a finite-element analysis

Biomaterial Investigations in Dentistry

Avaliação por elementos finitos da influência da geometria e espessura nas tensões térmica em porcelana sobre zircônia

Resumos, 2014

Análise de elementos finitos em teste de resistência flexural de resina composta

Pesquisa Odontológica Brasileira, 2001

Influência da perda de estrutura dental e material restaurador no comportamento biomecânico de pré-molar: Análise por elemento finito

Brazilian Oral Research, 2011

Diferença de unidades de cor ('delta'E) de resinas acrílicas em função de proporções, espessuras e marcas

Tensões térmicas e risco de lascamento em porcelana sobre zircônia: análise por elementos finitos

Resumos, 2013

Importância da simulação do ligamento periodontal em modelo de elementos finitos utilizado para previsão de fratura radicular em pré-molar superior endodonticamente tratado

Handbook of Oral Biomaterials, 2014

The constant pursuit of the scientific invention, R&D and adaption of cutting edge technology is ... more The constant pursuit of the scientific invention, R&D and adaption of cutting edge technology is an essential component of a world-view that changes the realities on how we live and survive today. The adaptation of new technology is growing tremendously in all fields including medicine and dentistry. It is getting more advanced day by day replacing all sort manual and tedious process in Dentistry creating a happy smile in a short time. Finte element analysis involves a series of computational procedures to calculate the stress in each element, which performs a model solution. Such a structural analysis allows the determination of stress resulting from external force, pressure, thermal change, and other factors. It is useful for indicating the mechanical aspects of biomaterials and human tissues which are difficult to be measured and analyzed in-vivo moreover it could consume a undefined timeliness. The results which are obtained can be studied using software where we can visualize within the FEM environment at variety of parameters and to identify the implications of finite element analysis. Analysis of stress of dental structures has been a topic of interest in the recent years with an objective of determining stresses in the dental structures and improvement of the mechanical strength of these structures. The present paper is on basic concept, applications and limitations of finite element method (FEM) in dentistry.

Intrusion of overerupted periodontally compromised posterior teeth using orthodontic mini implants: A mechanobiological finite element study

Orthodontics & Craniofacial Research, Sep 8, 2022

IntroductionThe intrusion of posterior teeth had been considered challenging up to the developmen... more IntroductionThe intrusion of posterior teeth had been considered challenging up to the development of orthodontic mini implants. In periodontally compromised teeth, the challenge is even greater, because of the root resorption risk due to periodontal ligament over‐compression. Still, the precise strategy to determine the force reduction level remains uncertain.ObjectiveThe objective of the study was to determine, by a finite element analysis (FEA), the force reduction needed to avoid root resorption and maintain the efficiency of orthodontic mechanics of periodontally compromised teeth similar to the sound one.MethodsAn anatomical model was constructed representing a premolar inserted into a maxillary bone. Based on the initial model (R0), three bone height loss conditions were simulated (R2 = 2 mm, R4 = 4 mm, and R6 = 6 mm). Two intrusive movements were simulated: pure intrusion (bilateral mini implant) and uncontrolled‐tipping intrusion (buccal mini implant). The hydrostatic stress at the periodontal ligament was used to evaluate the risk of root resorption due to over‐compression.ResultsFor bilateral mini implant intrusion, the force had to be decreased by 16%, 32% and 48% for R2, R4 and R6, respectively. For buccal mini implant intrusion, the required reductions were higher (20%, 36% and 56%). A linear relationship between the intrusive force reduction and the alveolar bone height loss was observed in both intrusion mechanics.ConclusionsAccording to the FE results, 8% or 9.3% of force reduction for each millimetre of bone height loss is suggested for intrusion with bilateral or buccal mini implant, respectively. The buccal mini implant anchorage must be associated with a supplemental strategy to avoid buccal crown tipping.

Microinfiltração e dureza Vickers em restaurações diretas de classe II

Pesquisa Odontológica Brasileira, 2000

Efeito férula e efeito espelho em pinos intra-radiculares

Brazilian Oral Research, 2008

Influência do módulo de elasticidade do pino e da direção do carregamento na concentração de tensões na raiz

RPG Revista da Pós-Graduação, 2006

Teste de lascamento da aresta em porcelana sobre zircônia e metal: análise por elementos finitos

Resumos, 2013

O mercúrio no consultório dentário: minimizando os riscos

Revista da Associação Paulista de Cirurgiões Dentistas, 2005

Estudo por elementos finitos da influência da férula na fratura radicular vertical

Influência dos contatos oclusais na distribuição de tensões em porcelana sobre zircônia: Análise por elementos finitos

Resumos, 2013

Influência do protocolo de resfriamento e do material de infraestrutura nas tensões residuais térmicas em porcelanas de cobertura

Brazilian Oral Research, 2016

Analyze the presence of occlusal interference and non-carious cervical lesions

Dental Materials, 2014

Biomechanical behavior of anterior teeth restored with ceramic veneers

Dental Materials, 2014

Revista da Faculdade de Odontologia - UPF, Apr 6, 2011

Marginal fit of cast titanium copings related to investments and casting techniques Desajuste cer... more Marginal fit of cast titanium copings related to investments and casting techniques Desajuste cervical de fundições de titânio tipo casquete em função de revestimentos e técnicas

Peri-implant bone resorption risk of anterior maxilla narrow single implants: a finite-element analysis

Biomaterial Investigations in Dentistry

Avaliação por elementos finitos da influência da geometria e espessura nas tensões térmica em porcelana sobre zircônia

Resumos, 2014

Análise de elementos finitos em teste de resistência flexural de resina composta

Pesquisa Odontológica Brasileira, 2001

Influência da perda de estrutura dental e material restaurador no comportamento biomecânico de pré-molar: Análise por elemento finito

Brazilian Oral Research, 2011

Diferença de unidades de cor ('delta'E) de resinas acrílicas em função de proporções, espessuras e marcas