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
Which tooth brushing technique should be used in
a patient with severe gingival recession and loss of
gingival contour 
Select and explain. 
A. Bass, B. Stillman, C. Charter, D. Multitufted
B: Stillman
Answer: B: Stillman 
Explanation: None