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Esthetics10

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robbypowell's version from 2016-12-05 23:00

Color theory (boo)

match these terms

Question Answer
_____ is the color shade, "name" of the color, correspond to the specific wavelength of light reflectedHue
_____ is the brightness of a color, the lightness or darkness; lighter is higher and darker os lowerValue
_____ is the degree of saturation of a color, how much of the same hue is reflected... what saturation of a given colorChroma
_____ is the term for the difference between two colors that the average human eye can seeDelta-E
memorize

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Question Answer
What "component of color" (Hue, value or chroma) is the eye most sensitive to?Value (how light or dark something is)
T/F: Light source, object and observer all affect the shade selectedTrue
Which light source does this describe (Daylight, Incandescent, Cool white fluorescent, Full spectrum) more even spectrum distribution but a bit more yellowDaylight
Which light source does this describe (Daylight, Incandescent, Cool white fluorescent, Full spectrum) more yellowIncandescent
Which light source does this describe (Daylight, Incandescent, Cool white fluorescent, Full spectrum) more blue and green tonesCool white fluorescent
Which light source does this describe (Daylight, Incandescent, Cool white fluorescent, Full spectrum) balanced light source, best for color selectionFull Spectrum (aka color corrected)
In terms of veneers, porcelain needs an adequate _______ to correct shadeThickness (an additional 0.2mm for each shade lighter)
When shade selecting... you shouldn't stare at the shade and tooth for more than ____ seconds5 seconds ((bc you'll get fovea burnout
What is the ideal type of light source for shade selection?Full Spectrum (color corrected)
What is the best thing you can do to match highly characterized teeth (multiple shades on different parts and diff ttextures/colors)Send pictures with shade guides for each portion
memorize

shade guides

Question Answer
Classic Vita Shade guide is grouped by _____ (component of color)HUE (color) (remember that value is what we're best at detecting)
On classic vita, are arranged from 1-4 by ______ (increasing/decreasing) valueDecreasing (decreasing value means getting darker)
Which shade (of the A-D) has a brown Hue?A
Which shade (of the A-D) has a Yellow hue?B
Which shade (of the A-D) has a grey hue?C
Which shade (of the A-D) has a red-brown hue?D
What is the best shade guide? why?3D Master Shade Guide; grouped by Value (the thing) then from the value you use the middle tab next to determine Chroma (saturation) then last select hue. This is optimized by the way our eyes can best differentiate.
T/F: Human eye can not discern between very small differences in colorTrue
_____ is the term for the difference between two colors that the average human eye can seeDelta-E
This type of digital shade selection gets a digital image of color but may be too much information and has a tendency to give too many different shades to be usefulBit mapping
This type of digital shade selection uses a device that works like the human eye, using three color sensors (RGB) and creates shade info from theseColorimeter
This type of digital shade selection uses many wavelength specific receptors and sees the entire visible spectrum, a pocket version is mini 12 band, highly accurate, not super expensiveSpectrophotometer
This type of digital shade selection (what we used in class) uses a probe, place against tooth and hold button until it beeps. probe tip should be perpendicular to to and flush with tooth surfaceVITA Easyshade Advance
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