Question 552 · LDEK · Composites
Select the true statement about polymerization of composite materials:
1) depth of cure for opaque composite shades is lower than for translucent composite shades because opaque shades reduce light penetration;
2) depth of light penetration into a composite filling is not affected by light dispersion within the restoration;
3) filler content affects light dispersion;
4) darker shades of composites require a shorter curing time because of the lower filler content.
The correct answer is:
2) depth of light penetration into a composite filling is not affected by light dispersion within the restoration;
3) filler content affects light dispersion;
4) darker shades of composites require a shorter curing time because of the lower filler content.
The correct answer is:
- A. 1,2.
- B. 2,3.
- C. 3,4.
- D. 1,3.
- E. 2,4.
Hint
Think about what happens to curing light as it passes filler particles and pigments, and how shade opacity affects depth of cure.
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