Background: This study sought to assess the effect of glazing and polishing surface treatments on the optical behavior of zirconia-reinforced lithium silicate ceramics thermocycled in different solutions. Methods:Computer-aided design/computer-aided manufacturing ceramics (VITA Suprinity) were cut into samples (n=104) measuring 1.5x14x10 mm according to t...

Background The aim of this in vitro study was to evaluate the color stability of CAD/CAM Zirconia ceramics following exposure to acidic drink (Coca Cola) and after exposure to staining solution (coffee). Material and Methods All the samples were immersed in different staining solutions over a 28-day test period. A colorimetric evaluation according to the CIE L*a*b* system was performed by a b...

Water immersion alters the autonomic nervous system (ANS) response in humans. The effect of water immersion on executive function and ANS responses related to executive function tasks was unknown. Therefore, this study aimed to determine whether water immersion alters ANS response during executive tasks. Fourteen healthy participants performed color-word-matching Stroop tasks before and after n...

The present study sought to investigate the evidence for cross-linguistic transfer in a partial English immersion and non-immersion educational setting. To this end, a total of 145 first, third and fifth graders in a partial English immersion program and 95 students from the same grade levels in a non-immersion program were chosen. Six different English and Persian tests were administered: the ...

objective: vitex agnus-castus (vac) and its essential oil have been traditionally used to treat many conditions and symptoms such as premenstrual problems, mastalgia, inflammation, sexual dysfunction, and pain. in this study, the effects of essential oil extracted from vitex agnus-castus (eovac) leaves were investigated in three behavioral models of nociception in adult male wistar rats. materi...

In this paper, polymer-based nanocomposites powder were applied on the surface of plain carbon steel by electrostatic device and then were cured by microwave. The effect of adding nanoparticles on the corrosion resistance properties of the coatings was investigated by Electrochemical Impedance Spectroscopy and immersion test in 3.5 NaCl solution. Coatings structure and morphology of nanoparticl...

A strong molluscicidal effect of sanguinarine against Oncomelania hupensis snails was demonstrated by immersion test in the present study. A positive relationship between doses, immersion time and the mortality of the snails was exhibited, while the optimal dose and immersion time of application towards the field eradication of snails were suggested. The possible mechanisms of effects were expl...

This study evaluated color stability, surface roughness and flexural strength of acrylic resin specimens after immersion in alkaline peroxide and alkaline hypochlorite, simulating a period of one and a half year of use of overnight immersion. Sixty disc-shaped (16x4 mm) and 80 rectangular specimens (65x10x3.3 mm) were prepared from heat-polymerized acrylic resin (Lucitone 550) and distributed i...