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
After curettage, restoration of junctional epithelium occurs after: 
Select and explain. 
A. 3 days, B. 5 days, C. 7 days, D. 21 days
B: 5 days
Answer: B: 5 days 
Explanation: Resorption Re-epithelization of sulcus : After 2-7 days.
Restoration of junctional epithelium : After 5 days.
Immature collagen fibers after 21 days.