Results 91 to 100 of about 12,761 (261)

The Influence of Projection Lamps on the Colors of Early Silent Cinema Films

open access: yesHeritage
Quantitative data on the colors of early film productions is very scarce but may be useful for preserving these cultural assets and for guiding modern digitization processes.
Daniel Vázquez   +7 more
doaj   +1 more source

Effects of Bleaching Protocols on the Esthetic Outcome and Surface Integrity of Enamel Treated With an Ammonia‐Free Silver Fluoride Solution

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To investigate the effects of three bleaching protocols on the color stability and surface roughness of enamel previously treated with a water‐based, ammonia‐free silver fluoride solution (Riva Star Aqua). Materials and Methods Eighty‐eight human enamel/dentin specimens were demineralized and treated with Riva Star Aqua, divided into
Ahmed Alshawi   +4 more
wiley   +1 more source

Quantifying Relationships between Color and Personality Using Multiple Regression

open access: yes四川大学学报. 自然科学版, 2016
Color is an important aspect of visual perception. It not only has aesthetic value but also can convey personality-relevant information. However, a clear and quantitative understanding of how color evokes personality associations is still lacking.
WU Zhi-Ming   +4 more
doaj  

The distribution range of CIELab measuring from the limb of petals for Hemerocallis.

open access: yes, 2019
The distribution range of CIELab measuring from the limb of petals for Hemerocallis.
Feifei Gong (6807512)   +7 more
core   +1 more source

Effects of Substructure Color and Restoration Thickness on the Final Color of Ultra‐Translucent Zirconia Ceramics

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective This in vitro study aimed to evaluate the effects of substructure color and restoration thickness on the final color of shade‐gradient ultra‐translucent zirconia ceramics. Material and Methods A total of 180 flat‐shaped ultra‐translucent zirconia specimens (5Y‐PSZ) with thicknesses of 0.4, 0.6, and 0.8 mm (n = 60) were fabricated and
Elif Yılmaz Biçer   +2 more
wiley   +1 more source

Visual assessment of viewing direction based on color discrimination

open access: yesJournal of Information Display, 2019
For the large-screen TV viewer, it makes sense to obtain visual information within the same viewing direction rather than based on any physical change between the normal-axis and viewing directions, as in the conventional measurement methods.
Moon-Cheol Kim
doaj   +1 more source

Clinical Study on the Efficacy of 35% Hydrogen Peroxide Gel According to Exposure Time (40 min vs. 20 min) by Spectrophotometry

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To analyze the chromatic effect on CIELAB coordinates and the clinical effectiveness of in‐office whitening treatment (perceptible changes) with 35% hydrogen peroxide (HP) gel according to the number of clinical sessions and exposure time (40 min vs. 20 min) in the three thirds of the tooth.
Trinidad Rincón   +6 more
wiley   +1 more source

The combined effect of food-simulating solutions, brushing and staining on color stability of composite resins

open access: yesActa Biomaterialia Odontologica Scandinavica, 2017
Objective: This study evaluated the effect of food-simulating media associated with brushing and coffee staining on color stability of different composite resins. Materials and methods: Eighty specimens were prepared for each composite: Grandio SO (Voco),
Tânia Mara Da Silva   +4 more
doaj   +1 more source

Objective Measurement of Tooth Color Using Spectrophotometry and ICDAS: Quantifying CIELAB Color Changes Across Caries Severity

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective The International Caries Detection and Assessment System (ICDAS) is widely used for early caries detection but relies on visual interpretation. Although spectrophotometry objectively quantifies tooth color, variation across ICDAS categories and its relationship with lesion severity remain unclear. The present in vitro study therefore
Farah Rashid, James Dudley
wiley   +1 more source

Reliability of Three Image‐Based Instrumental Color‐Measurement Methods

open access: yesJournal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To compare the precision of three clinically applicable, image‐based color assessment methods—smartphone imaging, a clinical colorimeter (Optishade), and a digital scanning device (Borea Cobra)—against a benchtop spectrophotometer for measuring CIELAB coordinates and CIEDE2000 (ΔE00) color differences of composite resin shades ...
Eloah Nunes de Almeida   +4 more
wiley   +1 more source

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