CCE Color Science & Shade Matching Flashcards
6 cards from real CCE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CCE Color Science & Shade Matching flashcards as text
When performing shade matching, the ceramist should evaluate the shade at which stage of the appointment?
Answer: At the very beginning of the appointment before tooth dehydration
Shade selection should occur at the very start of the appointment because tooth dehydration from air exposure or rubber dam use increases the apparent value, skewing results.
The 'halo effect' visible on natural incisal edges is primarily due to:
Answer: Back-scattering of light through translucent enamel at the incisal edge
The incisal halo effect results from light back-scattering through the translucent enamel at the edge, creating a lighter or opalescent rim.
Which effect causes dental porcelain to appear blue in the incisal region and orange-red cervically in transmitted light?
Answer: Opalescence
Opalescence causes short-wavelength (blue) light to scatter in reflected light and long-wavelength (red/orange) light to transmit, replicating natural enamel optical behavior.
A shade photograph taken for laboratory communication should ideally be shot with:
Answer: A calibrated gray card, manual white balance, and diffused lighting
Accurate laboratory shade photos require a calibrated gray card for white balance, manual camera settings, and diffused lighting to avoid reflective artifacts.
In ceramics, the term 'chroma' in context of shade communication refers to:
Answer: The saturation or intensity of the hue
Chroma describes how saturated or intense a hue is; in dental ceramics, higher chroma means a deeper, more saturated tooth color.
Which area of a natural tooth typically exhibits the highest chroma?
Answer: Cervical third
The cervical third has the highest chroma because the thinner overlying enamel allows the more saturated dentin color to dominate.