For photo-curing the composite resin the light source______________?
Correct answer: D. Should be held at a millimeter distance from the restoration
- A. Is fiber optic
- B. Need no protection while in use
- C. Will cure composite upto a depth of 5 millimeter thickness
- D. Should be held at a millimeter distance from the restoration
Explanation
The curing tip should be held very close, approximately 1 mm from the restoration, because light intensity falls rapidly with distance. A 5-mm curing depth is not generally assured, and eye protection remains necessary.
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Practise Restorative Materials
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