What do you know about safe teeth whitening?

What do you know about safe teeth whitening?

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Question 7 of 8
Do the laser/beams affect the whitening process?

Do the laser/beams affect the whitening process?

A: yes
ERROR
Correct answer: This effect has not been proven. The result is the same with or without light. Light can speed up the color change in the first few days, but peroxide is responsible for the whitening.
B: No
RIGHT
Explanation: This effect has not been proven. The result is the same with or without light. Light can speed up the color change in the first few days, but peroxide is responsible for the whitening.
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