Statement of problem : fracture of endodontically treated teeth is reduced by the use of a post with ferrule, but the effect of different ferrule configurations and dowel materials is not clear. Purpose: to evaluate the effect of ferrules with different configurations and heights on the stress of endodon...
Fracturas de los Dientes,
Análisis del Estrés Dental/métodos,
Materiales Dentales/química,
Incisivo/fisiología,
Maxilar/fisiología,
Técnica de Perno Muñón/instrumentación,
Estrés Mecánico,
Diseño de Prótesis Dental,
Modelos Biológicos,
Simulación por Computador,
Diseño Asistido por Computadora
Abstract Objective: Orthodontic force application releases multiple enzymes in gingival crevicular fluid (GCF) for activation, resorption, reversal, deposition of osseous elements and extracellular matrix degradation. The current systematic review critically evaluated all existing evidence on enzymes i...
Resumen: Antecedentes: La muerte de los cardiomiocitos es determinante en el desarrollo de patologías cardiacas posteriores al infarto del miocardio y la insuficiencia cardiaca. Las variaciones en la expresión de la familia de proteínas BCL-2 regulan vías, tanto de muerte, como de sobrevida celular...
Abstract The aim of this study was to evaluate the failure probability of two types of abutment screws after compressive load and to analyze the stress distribution with finite element method. Sixty (60) single-tooth implant restorations were assembled on titanium implants (e-fix, A.S. Technology - Titan...
Este projeto teve como objetivo analisar as tensões geradas em próteses implantossuportadas fixa unitária variando o sistema de conexão implante/prótese, o sistema de retenção, material restaurador, tipo ósseo, e o nível de tecido ósseo ao redor do implante através do método dos elementos fin...
OBJECTIVES: To evaluate and compare the magnitude and distribution of stresses generated on implants, abutments and first molar metal-ceramic crowns using finite element analysis. METHODS: Preliminary three-dimensional models were created using the computer-aided design software SolidWorks. Stress and s...
Diseño Asistido por Computadora,
Coronas,
Diseño de Implante Dental-Pilar/instrumentación,
Diseño de Implante Dental-Pilar/métodos,
Implantes Dentales,
Diseño de Prótesis Dental/instrumentación,
Diseño de Prótesis Dental/métodos,
Análisis del Estrés Dental,
Módulo de Elasticidad,
Análisis de Elementos Finitos,
Mandíbula/diagnóstico por imagen,
Modelos Anatómicos,
Estrés Mecánico
Abstract: This study aimed to assess the cyclic fatigue resistance of Genius and EdgeFile X1 reciprocating instruments compared with WaveOne Gold Primary. Twenty Genius (Ultradent) 25.04, 20 Genius 30.04, 20 EdgeFile X1 (EdgeEndo) and 20 WaveOne Gold Primary (Dentsply Maillefer) instruments were included...
Instrumentos Dentales/normas,
Diseño de Equipo,
Análisis de Falla de Equipo,
Ensayo de Materiales,
Microscopía Electrónica de Rastreo,
Níquel/química,
Valores de Referencia,
Preparación del Conducto Radicular/instrumentación,
Estadísticas no Paramétricas,
Estrés Mecánico,
Propiedades de Superficie,
Factores de Tiempo,
Titanio/química
Abstract To evaluate the torsional properties of engine-driven pathfinding instruments manufactured from different NiTi alloys - R-Pilot (tip size 12.5;.04 taper; M-Wire) and One G (tip size 14;.03 taper; Conventional NiTi). A total of 40 NiTi instruments from engine-driven pathfinding instruments (n = 2...
Aleaciones/química,
Análisis de Varianza,
Aleaciones Dentales/química,
Instrumentos Dentales,
Diseño de Equipo,
Análisis de Falla de Equipo,
Ensayo de Materiales,
Microscopía Electrónica de Rastreo,
Valores de Referencia,
Reproducibilidad de los Resultados,
Preparación del Conducto Radicular/instrumentación,
Estadísticas no Paramétricas,
Estrés Mecánico,
Propiedades de Superficie,
Torque
Aim: This study evaluated the fracture load and pattern failure of different prefabricated glass fiber posts (GFPs) of the same diameter. Methods: Seventy-eight (n=13 for six groups) GFPs of 1.6 mm coronal diameter of different brands were evaluated— Exacto (Angelus), Power Post (BM4), White Post DC (F...
Abstract Introduction: Some authors have described the importance of physiological intensity in the behavior of the biomechanical aspects of running (for example, subtalar pronation), but the complex relationships between these variables are not yet well understood. Objective: This study investigated...
