نتایج جستجو برای: color reduction

تعداد نتایج: 608640  

2016
Marcelo F. Costa

Color vision is one of the most intriguing phenomena of the visual experience and has been the object of study from vision scientists to philosophers of perception. The wavelengths, their intensity and purity are experienced as hue, brightness and saturation based on complex information processing of the light entering the eyes. This special research topic is devoted to covering from basic aspe...

2016
Hee-Kyung Kim Sung-Hun Kim Jai-Bong Lee Jung-Suk Han In-Sung Yeo Seung-Ryong Ha

PURPOSE This study investigated the effect of amount of thickness reduction on color and translucency of dental monolithic zirconia ceramics. MATERIALS AND METHODS One-hundred sixty-five monolithic zirconia specimens (16.3 mm × 16.3 mm × 2.0 mm) were divided into 5 groups (Group I to V) according to the number of A2-coloring liquid applications. Each group was then divided into 11 subgroups b...

Journal: :journal of dental materials and techniques 0
fatemeh nezhadnasrollah assistant professor, dental materials research centre, department of restorative and esthetic dentistry, faculty of dentistry, babol university of medical sciences, babol, iran farzin shahrokhzadeh dental student, student research committee, babol university of medical sciences, babol, iran hemmat gholinia msc in statistics, health research institute, babol university of medical sciences, babol, iran

objectives: the aim of this study was to evaluate the effect of six herbal teas on the color stability of two types of nanohybrid and one microhybrid resin composite.  materials and methods: 70 disc-shaped specimens, 210 in total (7*2mm), were fabricated from each of the following materials in metal mould : tetric n ceram, grandio, gradia direct anterior. specimens were stored in distilled wate...

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