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23.074  Articles
1 of 2.308 pages  |  10  records  |  more records»
Objectives: This study aimed to evaluate the effects of hydrofluoric acid (HF) concentration and etching time on the surface roughness (SR) and three-point flexural strength of Suprinity and to analyze the surface elements before and after etching.Materia... see more

BACKGROUND: Hydrofluoric acid is a commonly used chemical in many industrial branches, but it can also be found as an ingredient in household products such as cleaning agents. Possessing high corrosive potential, HF acid causes burns and tissue necrosis, ... see more

AIM: The purpose of this review is to represent acids that can be used as surface etchant before adhesive luting of ceramic restorations, placement of orthodontic brackets or repair of chipped porcelain restorations. Chemical reactions, application protoc... see more

Objective – The aim of this study was evaluate the effect of etching with different hydrofluoric acid (HF) concentrations on the shear bond strength between glazed feldspathic ceramic and metal brackets. Materials and Methods – Seventy-five blocks of glaz... see more

The article examines the problems of thermal oxidation of silicon. Oxidation plays an important role in planar technology, which in turn is the basis of the technology of silicon integrated circuits, photodetectors and other solid-state electronics. Durin... see more


Introduction: The improvement of ceramic has increased due to highly demand for aesthetic restoration. Ceramic at its nature is a brittle material that highly susceptible to be cracked, that leads to chipping and fracture of the restoration. Composite res... see more

This study aims to determine the concentrations of heavy metals (Cu, Pb, Fe, Cd, Zn and Hg) in prawns (Macrobrachium vollenhovenii) of lagoons Aghien and Potou in order to protect population’s heath. Nitric acid was added to every sample of water. Sedimen... see more

Bencana alam, kecelakaan lalu-lintas dan penuaan dapat menjadi penyebab tulang patah (bone fracture) dan keropos tulang. Salah satu teknik penyembuhan tulang yang rusak (bone defect) adalah dengan mengimplankan struktur tulang buatan atau skafol tulang ya... see more

1 of 2.308 pages  |  10  records  |  more records»