Aim: To evaluate the effect of different surface treatments and adhesive approaches on the microshear bond strength of resin cement to a polymer-infiltrated ceramic network (PICN). Methods: PICN blocks were randomly assigned into 9 groups (n=10): CTRL: no treatment; HF: 5% hydrofluoric acid etching; HF-S...
Objectives: this in vitro study was done to evaluate the effect of packable P60 composite and Tetric N-Ceram composite veneer material on fracture strength of zirconia cores. Material and Methods:Twenty four zirconium cores (Vita, Germany) with 0.7 mm thi...
Os objetivos deste estudo foram caracterizar a superfície das cerâmicas para sistema CAD/CAM (F-Feldspática, S-Silicato de lítio reforçado por zircônia e Z-Zircônia de média translucidez) após diferentes précondicionamentos de superfície para cimentação aplicados separadamente ou combinados;...
Abstract The objective of this study was to evaluate the influence of hydrofluoric acid (HF) concentration, etching time, and application of phosphoric acid (PA) followed by neutralization with sodium bicarbonate on the bond strength between a feldspar ceramic and resin cement. Thus, 80 blocks (10 x 12 x...
Silicatos de Aluminio/química,
Análisis de Varianza,
Recubrimiento Dental Adhesivo/métodos,
Porcelana Dental/química,
Ácido Fluorhídrico/química,
Ensayo de Materiales,
Metacrilatos/química,
Microscopía Electrónica de Rastreo,
Ácidos Fosfóricos/química,
Compuestos de Potasio/química,
Valores de Referencia,
Reproducibilidad de los Resultados,
Cementos de Resina/química,
Resistencia al Corte/efectos de los fármacos,
Silanos/química,
Propiedades de Superficie,
Factores de Tiempo
Abstract This study to evaluate the effects of different hydrofluoric acid (HF) concentrations and thermal cycling on the shear bond strength (SBS) of brackets to ceramic. Cylinders of ceramic were divided into 10 groups (n=15), according to HF concentrations: 1-1%;2-2.5%;3-5%;4-7.5%;5-10% (storage 24 h)...
Abstract To evaluate the effect of combining 5% hydrofluoric acid (HF) and silane (SI) with the self-etching ceramic primer on the immediate and after 1-year of water storage on bonding efficacy, conditioning pattern (CP) and chemical interaction (CI) to the lithium disilicate. A total of 16 CAD/CAM bloc...
Objetivo: O objetivo do estudo foi avaliar o efeito da aplicação de ácido fluorídrico com diferentes tempos e concentrações na superfície de materiais restauradores indiretos obtidos a partir de blocos utilizados na tecnologia CAD-CAM. Materiais e Métodos: Amostras dos materiais restauradores ind...
Objective: The aim of the study was to evaluate the influence of different surface post-etching treatments in flexural strength, contact angle and surface roughness of a lithium disilicate ceramic. Material and Methods: 60 bars (16 x 2 x 4 mm) were divided in six groups (n=10): C, no treatment; HF, hydro...
Abstract: The objective of this study was to evaluate the effect of the hydrofluoridric acid (HF) concentration and time of acid conditioning on bond strength of three glass ceramics to a resin cement. Thus, fifty blocks (10 mm x 5 mm x 2 mm) of each ceramic (LDCAD: IPS e.max CAD; LCAD: IPS Empress CAD a...
Grabado Ácido Dental,
Cerámica/química,
Recubrimiento Dental Adhesivo/métodos,
Porcelana Dental/química,
Análisis del Estrés Dental,
Ácido Fluorhídrico/administración & dosificación,
Ácido Fluorhídrico/química,
Ensayo de Materiales,
Cementos de Resina/química,
Resistencia al Corte,
Propiedades de Superficie,
Factores de Tiempo,
Microscopía Electrónica de Rastreo
Introduction: Despite being one of the most studied ceramics today, zirconia still does not have a well-defined adhesion protocol. Objective: Evaluate the influence of different etching times and hydrofluoric acid (HF) concentrations on the zirconia surface and bond strength between a vitrified Y-TZP ...
