This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
Composite placement should be done after how many days of bleaching: 
Select and explain. 
A. 1 hour., B. 24hours., C. 1week., D. 1month.
C: 1week.
Answer: C: 1week. 
Explanation: In bleached tooth minimum waiting time before composite placement = 1 to 2 week
In bleached tooth minimum waiting time in extensive composite restoration & long bleaching cases = 6 weeks