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Assessment of color fidelity of several composite resins compared to their Vita Classical shade registration
(2010-09-01)
This study compared the color fidelity of different composite resins with their registration in the Vita Classical Shade Guide. Using a prefabricated Teflon mold, 120 specimens were divided into four groups fn - 30), ...
Brittleness index and its relationship with materials mechanical properties: Influence on the machinability of CAD/CAM materials
(2019-01-01)
The aim of this study is to evaluate the machinability of four CAD/CAM materials (n = 13) assessed by brittleness index, Vickers hardness, and fracture toughness and interaction among such mechanical properties. The materials ...
Accuracy of impression techniques for implants. Part 1 - Influence of transfer copings surface abrasion
(2008-12-01)
Purpose: This study evaluated the influence of surface abrasion of transfer copings to obtain a precise master cast for a partially edentulous restoration with different inclinations. Materials and Methods: Replicas (N = ...
Dielectric microwave absorbing material processed by impregnation of carbon fiber fabric with polyaniline
(ABM, ABC, ABPol, 2007-03-01)
It is a known fact that the adequate combination of components and experimental conditions may produce materials with specific requirements. This study presents the effect of carbon fiber fabric impregnation with polyaniline ...
Cytotoxicity, biocompatibility and biomineralization of a new ready-for-use bioceramic repair material
(2019-07-01)
New mineral trioxide aggregate (MTA) formulations are constantly introduced in the market, usually in a powder-and-liquid form. Bioceramic (Bio-C) Repair is a ready-for-use material suggested as substitute for MTA, but its ...
Análise Microbiológica de Embalagens para o Acondicionamento de Medicamentos e Cosméticos
(Colegio Farmaceuticos Provincia de Buenos Aires, 2008-09-01)
Microbiological Control of Packaging Materials for Medicines and Cosmetics. Several consumers and official agencies, associated with the necessity of more efficient, safety and good microbiological quality packaging ...
Quantitative analysis of lead in polysulfide-based impression material
(ABM, ABC, ABPol, 2007-06)
Permlastic® is a polysulfide-based impression material widely used by dentists in Brazil. It is composed of a base paste and a catalyzer containing lead dioxide. The high toxicity of lead to humans is ground for much ...
Volcanic ash as flux in clay based triaxial ceramic materials, effect of the firing temperature in phases and mechanical properties
(Elsevier, 2015-06)
The study of possible incorporation of nontraditional starting powders is a contribution to the rational utilization of raw materials in the ceramic industry. The technological properties of solid waste problems (both urban ...
Effectiveness of surface protection for resin-modified glass-ionomer materials
(Quintessence Publishing Co Inc, 1999-06-01)
Objective: the purpose of this study was to evaluate the effectiveness of various surface treatments for resin-modified glass-ionomer restorative materials by determining dye uptake spectrophotometrically. Method and ...
Effectiveness of surface protection for resin-modified glass-ionomer materials
(1999-06-01)
Objective: The purpose of this study was to evaluate the effectiveness of various surface treatments for resin-modified glass-ionomer restorative materials by determining dye uptake spectrophotometrically. Method and ...