Restorative & Materials · single question
Among these composite shades, which takes the LONGEST to light-cure?
Show answer and explanation
Correct answer: A. D3 (darkest)
- A. Correct. Darker/lower-value shades contain more pigment, absorb more curing light, and reduce depth of cure — so they require longer cure times (and shallower increments). D3 is the darkest of these options.
- B. Incorrect. A1 is a high-value (light) shade that transmits light readily and cures fastest.
- C. Incorrect. B2 is lighter than D3 and transmits more curing light, so it cures faster than the darkest shade.
Note: A variant of this item offered D3 / C3 / D2 — there the answer is C3, because on the VITA value scale C3 is darker (lower value) than D3.
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