Examinando por Autor "Isaza JF"

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    Ítem
    Desarrollo de un modelo FEM del complejo craneofacial para simular tratamientos en CLASE III esqueletica
    (Facultad de Odontología, Universidad CES., 2010-01-01) María Eugenia González Botero; Isaza JF; Correa S; Roldán, S.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Bioingeniería GIB (CES – EAFIT)
    Introducción y Objetivo: Describir el método de reconstrucción de un cráneo completo para desarrollar un modelo de elementos finitos que permita posteriormente simular la acción de diferentes dispositivos tracción cervical mandibular, máscara facial
  • No hay miniatura disponible
    Ítem
    Desarrollo de un modelo FEM del complejo craneofacial para simular tratamientos en CLASE III esqueletica
    (Facultad de Odontología, Universidad CES., 2010-01-01) María Eugenia González Botero; Isaza JF; Correa S; Roldán, S.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)
    Introducción y Objetivo: Describir el método de reconstrucción de un cráneo completo para desarrollar un modelo de elementos finitos que permita posteriormente simular la acción de diferentes dispositivos tracción cervical mandibular, máscara facial
  • No hay miniatura disponible
    Ítem
    Design and construction of a transducer for bite force registration.
    (ELSEVIER SCI LTD, 2009-05-29) Isaza JF; Throckmorton GS; Roldán SI; Universidad EAFIT. Departamento de Ingeniería Mecánica; Bioingeniería GIB (CES – EAFIT)
    This study describes the development of a system for quantification of human biting forces by (1) determining the mechanical properties of an epoxy resin reinforced with carbon fiber, (2) establishing the transducer's optimal dimensions to accommodate teeth of various widths while minimizing transducer thickness, and (3) determining the optimal location of strain gages using a series of mechanical resistance and finite element (FE) analyses. The optimal strain gage location was defined as the position that produced the least difference in strain pattern when the load was applied by teeth with two different surface areas. The result is a 7.3-mm-thick transducer with a maximum load capacity beyond any expected maximum bite force (1500N). This system includes a graphic interface that easily allows acquisition and registration of bite force by any health-sciences or engineering professional.
  • No hay miniatura disponible
    Ítem
    Design and construction of a transducer for bite force registration.
    (ELSEVIER SCI LTD, 2009-05-29) Isaza JF; Throckmorton GS; Roldán SI; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)
    This study describes the development of a system for quantification of human biting forces by (1) determining the mechanical properties of an epoxy resin reinforced with carbon fiber, (2) establishing the transducer's optimal dimensions to accommodate teeth of various widths while minimizing transducer thickness, and (3) determining the optimal location of strain gages using a series of mechanical resistance and finite element (FE) analyses. The optimal strain gage location was defined as the position that produced the least difference in strain pattern when the load was applied by teeth with two different surface areas. The result is a 7.3-mm-thick transducer with a maximum load capacity beyond any expected maximum bite force (1500N). This system includes a graphic interface that easily allows acquisition and registration of bite force by any health-sciences or engineering professional.
  • No hay miniatura disponible
    Ítem
    Diseño y fabricación de un implante de cráneo a la medida.
    (Asociación Colombiana de Neurocirugía, 2010-01-01) Isaza JF; Correa S; Carlos Torres; Adolfo Cumplido; Balmore Bedoya; Universidad EAFIT. Departamento de Ingeniería Mecánica; Bioingeniería GIB (CES – EAFIT)
    Este artículo describe la metodología empleada para diseñar y fabricar un implante de cráneo a la medida de un paciente de trece años de edad con una lesión en la región fronto-parietal izquierda del cráneo, provocada por una caída.
  • No hay miniatura disponible
    Ítem
    Diseño y fabricación de un implante de cráneo a la medida.
    (Asociación Colombiana de Neurocirugía, 2010-01-01) Isaza JF; Correa S; Carlos Torres; Adolfo Cumplido; Balmore Bedoya; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)
    Este artículo describe la metodología empleada para diseñar y fabricar un implante de cráneo a la medida de un paciente de trece años de edad con una lesión en la región fronto-parietal izquierda del cráneo, provocada por una caída.
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    Ítem
    Evaluation of the structural behavior of three and four implant-supported fixed prosthetic restorations by finite element analysis.
    (ELSEVIER IRELAND LTD, 2012-04-01) Correa S; Ivancik J; Isaza JF; Naranjo M; Universidad EAFIT. Departamento de Ingeniería Mecánica; Bioingeniería GIB (CES – EAFIT)
    PURPOSE: There is much controversy about the minimum number of implants and maximum cantilever length in mandible prosthetic restoration. Finite elements analysis of three and four implant-supported prostheses was performed to determine the stresses in the superstructure, implants and cortical bone and, therefore, the failure prediction for each restoration. METHODS: An edentulous mandible was modeled from CT scan images. Two finite element models of three and four implant-supported prostheses with cantilever lengths of 10 and 15 mm were created. Occlusal loads in different parts of the superstructure were applied and shear and normal stresses were calculated. RESULTS: Two failure criteria were analyzed: the von Mises criterion for isotropic materials (superstructure and implants) and the Tsai-Wu criterion for transversely isotropic material (cortical bone). Both criteria predict failure in the three implant-supported prosthesis for all cases analyzed. The same applies for the four-implant prosthesis of 15 mm cantilever length. However, four implants and a cantilever length of 10mm passed the failure criteria and were considered safe. CONCLUSIONS: The results from the patient analyzed showed that fixed support prostheses on three implants are not recommended from a structural point of view because they do not adequately support occlusal loads. Excessive stress in the superstructure and the cortical bone can be expected, which would anticipate the failure of the restoration. Fixed support prostheses on four implants with a cantilever length of 10mm properly resist occlusal loading.
  • No hay miniatura disponible
    Ítem
    Evaluation of the structural behavior of three and four implant-supported fixed prosthetic restorations by finite element analysis.
    (ELSEVIER IRELAND LTD, 2012-04-01) Correa S; Ivancik J; Isaza JF; Naranjo M; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)
    PURPOSE: There is much controversy about the minimum number of implants and maximum cantilever length in mandible prosthetic restoration. Finite elements analysis of three and four implant-supported prostheses was performed to determine the stresses in the superstructure, implants and cortical bone and, therefore, the failure prediction for each restoration. METHODS: An edentulous mandible was modeled from CT scan images. Two finite element models of three and four implant-supported prostheses with cantilever lengths of 10 and 15 mm were created. Occlusal loads in different parts of the superstructure were applied and shear and normal stresses were calculated. RESULTS: Two failure criteria were analyzed: the von Mises criterion for isotropic materials (superstructure and implants) and the Tsai-Wu criterion for transversely isotropic material (cortical bone). Both criteria predict failure in the three implant-supported prosthesis for all cases analyzed. The same applies for the four-implant prosthesis of 15 mm cantilever length. However, four implants and a cantilever length of 10mm passed the failure criteria and were considered safe. CONCLUSIONS: The results from the patient analyzed showed that fixed support prostheses on three implants are not recommended from a structural point of view because they do not adequately support occlusal loads. Excessive stress in the superstructure and the cortical bone can be expected, which would anticipate the failure of the restoration. Fixed support prostheses on four implants with a cantilever length of 10mm properly resist occlusal loading.
  • No hay miniatura disponible
    Ítem
    ¿Novo sistema para tratamento de Classe III esquelética: Ortopedia Maxilomandibular com Ancoragem Óssea (BAMO) em mini-implantes de 3mm?
    (Dental Press International, 2015-07-01) Isaza JF; Isaza, Catalina; Universidad EAFIT. Departamento de Ingeniería Mecánica; Bioingeniería GIB (CES – EAFIT)
    This case report illustrates the treatment of a skeletal Class III patient in mixed dentition, performed by means of Bone Anchored Maxillo-Mandibular Orthopedics (BAMO), using coil springs and 3-mm miniscrews which are used instead of extraoral appliances
  • No hay miniatura disponible
    Ítem
    ¿Novo sistema para tratamento de Classe III esquelética: Ortopedia Maxilomandibular com Ancoragem Óssea (BAMO) em mini-implantes de 3mm?
    (Dental Press International, 2015-07-01) Isaza JF; Isaza, Catalina; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)
    This case report illustrates the treatment of a skeletal Class III patient in mixed dentition, performed by means of Bone Anchored Maxillo-Mandibular Orthopedics (BAMO), using coil springs and 3-mm miniscrews which are used instead of extraoral appliances