Abstract Several attachment systems for mandibular implant-supported overdentures are currently available and studies are required to understand their mechanical properties. The objective of this study was to evaluate the retention force and wear characteristics of three attachment systems in a simulatio...
Abstract This study aimed to evaluate the physicochemical properties of a calcium silicate-based sealer (Sealer Plus BC; MK Life, Porto Alegre, Brazil) compared with an epoxy-resin sealer (AH Plus; Dentsply DeTrey GmbH, Konstanz, Germany). Initial and final setting time was assessed based on ISO 6876:201...
OBJETIVO: Determinar el impacto causado por el tipo de herramienta y tipo de guante sobre la transmisibilidad de la vibración mano-brazo. MÉTODOS: Se realizó un diseño experimental a trabajadores del sector de hidrocarburos, con el objetivo de identificar la transmisibilidad global de los guantes ...
Abstract Introduction With the need for hearing screenings increasing across multiple populations, a need for automated options has been identified. This research seeks to evaluate the hardware requirements for automated hearing screenings using a mobile application. Objective Evaluation of headphone h...
Objetivo: avaliar radiograficamente a interface de reparo em resina bulk fill (Opus bulk fill – FGM) com diferentes protocolos de adesão. Metodologia: foram confeccionados 30 corpos de prova em formato de cubo, nas dimensões de 4mm x 6mm. Os corpos foram randomizados e divididos entre os grupos: G1: ...
Abstract Objective: To report the results of four mock femoral venous cannulas and the hydrodynamical superiority of one of them, which is the completely punched (CP) model, upon the other three. Methods: Four simulated femoral venous cannulas (single-stage, two-stage, multi-stage, and CP model) were d...
Resumo Este estudo objetivou determinar o limiar de redução na espessura do compósito de cor da dentina necessário para resultar em mudanças de cor perceptíveis e aceitáveis em restaurações simuladas. Três sistemas de compósitos (Charisma Diamond, IPS Empress Direct e Filtek Z350 XT) foram ava...
Abstract It evaluated the effect of aging by Low Temperature Degradation (LTD), executed after post- processing surface treatments (polishing, heat treatment and glazing), on the surface characteristics (micromorphology and roughness) and on the structural stability (phase transformation and mechanical b...
Materiales Dentales/química,
Pulido Dental/métodos,
Resistencia Flexional,
Calor,
Ensayo de Materiales,
Microscopía de Fuerza Atómica,
Microscopía Electrónica de Rastreo,
Propiedades de Superficie,
Difracción de Rayos X,
Itrio/química,
Circonio/química
Abstract This study aimed to compare the cytotoxicity of the Vita AC12, Lava Ultimate, Vita Enamic and InSync indirect restorative materials. Extracts of each material were prepared by incubation for 1, 7 and 40 days, with daily washing. Human gingival fibroblasts were exposed to the extracts, and cell v...
Abstract This study evaluated the effect of different hydrofluoric acid (HF) concentrations on the bond strength between a lithium disilicate-based glass ceramic and a resin cement. Eighty ceramic-blocks (12×7×2 mm) of IPS e.Max CAD (Ivoclar Vivadent) were produced and randomly assigned to 8 groups, co...
Grabado Ácido Dental/métodos,
Cerámica/química,
Recubrimiento Dental Adhesivo/métodos,
Porcelana Dental/química,
Ácido Fluorhídrico/química,
Ensayo de Materiales,
Microscopía de Fuerza Atómica,
Cementos de Resina/química,
Resistencia al Corte,
Estrés Mecánico,
Propiedades de Superficie
