Restorative & Materials · single question
What is the maximum increment thickness when placing composite resin using the conventional (layering) technique?
Show answer and explanation
Correct answer: A. 2 mm
- A. Correct. The conventional composite placement technique recommends increments of no more than 2 mm to ensure adequate light curing penetration throughout the layer. Thicker increments risk inadequate polymerization at the base.
- B. 4 mm is unsafe — composite curing typically penetrates only 2-3 mm depending on shade and curing unit.
- C. 3 mm exceeds the safe curing depth for most composite materials with conventional light curing.
- D. 1 mm is unnecessarily small and would require excessive layering.
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