CDC Shade Matching & Color Science Flashcards
6 cards from real CDC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CDC Shade Matching & Color Science flashcards as text
Which three dimensions of color are used in the Munsell color system as applied to dental shade matching?
Answer: Hue, chroma, and value
The Munsell system describes color using hue (color family), chroma (intensity), and value (lightness/darkness), the three dimensions most relevant to dental shade matching.
Metamerism in dental ceramics refers to which phenomenon?
Answer: Two restorations appearing to match under one light source but not another
Metamerism occurs when two objects with different spectral reflectance curves appear to match under one illuminant but differ under another, such as operatory light versus natural daylight.
Which shade guide is most commonly used in US dental ceramics laboratories for porcelain-fused-to-metal and all-ceramic restorations?
Answer: VITA Classical A-D shade guide
The VITA Classical A-D shade guide remains the most widely used reference in US dental laboratories, organizing shades into four hue groups labeled A through D.
What is the primary reason a ceramist should evaluate shade under natural daylight or a daylight-corrected lamp at 5500 to 6500 K?
Answer: Daylight provides a balanced full-spectrum reference that minimizes color bias from incandescent or fluorescent sources
Daylight at 5500 to 6500 K is a neutral full-spectrum reference that reveals true color without the yellow bias of incandescent light or the green spike of standard fluorescent tubes.
Which optical property of dental ceramics describes the partial transmission and scattering of light, giving teeth their lifelike depth?
Answer: Translucency
Translucency allows light to pass through and scatter within the ceramic, creating the depth and vitality that distinguishes natural-looking restorations from opaque ones.
When a dental ceramist notices that a completed crown appears darker at the cervical third than expected, which corrective step is most appropriate before glazing?
Answer: Apply a thin layer of a lighter-value cervical modifier and re-fire
A cervical modifier of higher value corrects localized darkness without altering the overall shade, and re-firing integrates it into the ceramic matrix.