We analyze the properties and stability of two-color discrete localized modes in arrays of channel waveguides where tunable quadratic nonlinearity is introduced as a nonlinear defect by periodic poling of a single waveguide ...

Objective: To analyze the influence of three pigment incorporation methods on color change, dimensional stability, and detail reproduction of the MDX4-4210 and A-2186 silicones. Materials and Methods: The A-2186 and MDX4-4210 ...

This work was carried out accelerated stability study that aims to provide data to predict the stability of the product. Emulsions were analyzed with and without preservatives, deliberately contaminated with Staphylococcus ...

PURPOSE. The aim was to evaluate the effect of four acidic beverages on the roughness (Ra) and color change (ΔEab) of two brands of artificial teeth and a heat-polymerized acrylic resin (HPAR) for use in a prosthetic base. ...

Color stability of restorative materials is essential for longevity of esthetic composite restoration over time. The aim of this investigation was assess the effect of prior water immersion on the color stability of a ...

Esthetics and durability of materials used to fabricate artificial eyes has been an important issue since artificial eyes are essential to restore esthetics and function, protect the remaining tissues and help with patients' ...

Background: Brushing and consumption of dye beverages may alter the physical properties of artificial teeth. Objective: The objective of this study was to evaluate the effect of toothbrushing and immersion in beverages in ...