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Photoelastic stress analysis in mandibular bone surrounding bar-clip overdenture implants.
Pigozzo, Mônica Nogueira; Laganá, Dalva Cruz; Sesma, Newton; Souza, Glaís Ferrari de; Ichi, Alvaro Luiz.
Afiliação
  • Pigozzo MN; Department of Prosthodontics, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil.
  • Laganá DC; Department of Prosthodontics, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil.
  • Sesma N; Department of Prosthodontics, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil.
  • Souza GF; Department of Prosthodontics, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil.
  • Ichi AL; Department of Prosthodontics, School of Dentistry, Universidade de São Paulo, São Paulo, SP, Brazil.
Braz Oral Res ; 282014.
Article em En | MEDLINE | ID: mdl-24878673
The aim of this in vitro study was to evaluate, using the photoelastic analysis method, the stress distribution in mandibular bone surrounding a bar-clip overdenture when 2 implant angulations were simulated. Two mandibular photoelastic models were manufactured, with 2 implants embedded in the interforaminal region: model 1-PAPI, a photoelastic analysis model with parallel implants; and model 2-PAAI, a photoelastic analysis model with angled implants. A bar-clip retention system and an overdenture were positioned over the implants, and loads of 1.0, 2.0 and 3.0 bars were applied. The resultant stresses that developed in the supporting structure were photoelastically monitored and were recorded photographically. The results showed that there were no similarities in the areas of stress among the photoelastic resin models when the angulation of the implants was evaluated. Model 1-PAPI presented a higher stress concentration at the implant apex, while in model 2-PAAI, there were higher stress concentrations on the mesial and distal implant faces. Within the limitations of this study, it was concluded that the PAPI photoelastic model demonstrated better stress transfer compared to the PAAI model, since the forces oriented along the axis were better absorbed by the bone.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planejamento de Prótese Dentária / Prótese Dentária Fixada por Implante / Modelos Dentários / Análise do Estresse Dentário / Revestimento de Dentadura Tipo de estudo: Evaluation_studies / Prognostic_studies Limite: Humans Idioma: En Revista: Braz Oral Res Assunto da revista: ODONTOLOGIA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Planejamento de Prótese Dentária / Prótese Dentária Fixada por Implante / Modelos Dentários / Análise do Estresse Dentário / Revestimento de Dentadura Tipo de estudo: Evaluation_studies / Prognostic_studies Limite: Humans Idioma: En Revista: Braz Oral Res Assunto da revista: ODONTOLOGIA Ano de publicação: 2014 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil